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Gemco Parts Description Page 10

Part
Number
Product
Category
Description
2000-1134B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
300 to 1 Ratio Gear Ratio, the cam block rotates once every 300 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Enclosure, Watertight 
Turns required to reset switch 6 & 1/2 
Maximum switch setting @ 265 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-1135B Brake Parts Ametek Gemco Rotary Limit Switch. Worm Gear Type, Two Independent Circuits / Switches / Cams. 300 to 1 Gear Ratio. UL Listed D.P.D.T. Precision Snap Action Switches. NEMA 7 & 9 Rated Die Cast Aluminum Enclosure for Hazardous Locations, designed to meet the NEC Code for Class 1, Group D, and Class 2, Groups E, F & G Locations. Maximum Speed 1000 RPM. Maximum setting at 265 Input shaft Turns. 6 & 1/2 Turns to Reset (6LBS)
2000-1136B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
600 to 1 Ratio Gear Ratio, the cam block rotates once every 600 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 16 
Maximum switch setting @ 555 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(4LBS)
2000-1137B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
600 to 1 Ratio Gear Ratio, the cam block rotates once every 600 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Enclosure, Watertight 
Turns required to reset switch 16 
Maximum switch setting @ 555 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-1138B Brake Parts Ametek Gemco Rotary Limit Switch. Worm Gear Type, Two Independent Circuits / Switches / Cams. 600 to 1 Gear Ratio. UL Listed D.P.D.T. Precision Snap Action Switches. NEMA 7 & 9 Rated Die Cast Aluminum Enclosure for Hazardous Locations, designed to meet the NEC Code for Class 1, Group D, and Class 2, Groups E, F & G Locations. Maximum Speed 1000 RPM. Maximum setting at 555 Input shaft Turns. 16 Turns to Reset (6LBS)
2000-1139B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
2000 to 1 Ratio Gear Ratio, the cam block rotates once every 2000 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(4LBS)
2000-1140B Brake Parts Ametek Gemco Rotary Limit Switch. Series 2000 Worm Gear Type. Standard 2 Cam / Circuit / Switch with Double Pole Double Throw Snap Action Switches (D.P.D.T.) 2000 to 1 Gear Ratio. Cast Aluminum NEMA Type 4 Watertight Enclosure. Up to 1000 RPM no minimum. Clock Wise or CCW Rotation. 1/2 Inch Diameter Input Shaft with a # 404 Woodruff Key & Keyway. 1/2 -14 American Standard Pipe Thread Electrical Entrance. Maximum operating temperature 180 degrees F. (6LBS)
2000-1142B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
2000 to 1 Ratio Gear Ratio, the cam block rotates once every 2000 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 29 
Maximum switch setting @ 920 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(4LBS)
2000-1145B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
5333.3 to 1 Ratio Gear Ratio, the cam block rotates once every 5333.3 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 29 
Maximum switch setting @ 920 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(4LBS)
2000-115B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
20 to 1 Ratio Gear Ratio, the cam block rotates once every 20 turns of the main shaft 
4 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 7 Rated Enclosure 
Turns required to reset switch 1/8 
Maximum switch setting @ 19 & 1/4 Turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance
2000-116B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
40 to 1 Ratio Gear Ratio, the cam block rotates once every 40 turns of the main shaft 
4 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 7 Rated Enclosure 
Turns required to reset switch 1/2 
Maximum switch setting @ 38 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-118B Brake Parts Ametek Gemco Rotary Limit Switch, Worm Gear Type, 50 to 1 Ratio, 4 Cam, Single Pole Double Throw Switches, NEMA 7 Enclosure, Maximum Speed 1000 RPM Clock Wise or CCW., 1/2 Inch Diameter Input Shaft, includes # 404 Woodruff Keyway, 1/2 -14 American Standard Pipe Thread Entrance. 2 LBS.
2000-11B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
30 to 1 Ratio Gear Ratio, the cam block rotates once every 30 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Cast Aluminum Enclosure, Watertight 
Turns required to reset switch 1/4 
Maximum switch setting @ 28 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-1205 Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
20 to 1 Ratio Gear Ratio, the cam block rotates once every 20 turns of the main shaft 
4 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
This specially engineered switch has Non Standard Cams which allow the switch contacts to be opened for 54 or 306 Degrees. Dependent on whether it is wired for normally open or closed circuits. Standard is 25 or 335 degrees. Other cam dwells are available  
NEMA 12 Enclosure 
Turns required to reset switch 1/8th 
Maximum switch setting @ 19 & 1/4 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-1206 Brake Parts Ametek Gemco Rotary Limit Switch with an Engineered Part Number 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
20 to 1 Ratio Gear Ratio, the cam block rotates once every 20 turns of the main shaft 
3 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 04537004 
Non-Standard Cams S69A allow switch contacts to be opened for 90 or 270 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 1/8th 
Maximum switch setting @ 19 & 1/4 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(4LBS)
2000-121B Brake Parts Ametek Gemco Rotary Limit Switch, Worm Gear Type, 100 to 1 Ratio, 4 Cam, Single Pole Double Throw Switches, NEMA 7 Enclosure, Maximum Speed 1000 RPM Clock Wise or CCW., 1/2 Inch Diameter Input Shaft, includes # 404 Woodruff Keyway, 1/2 -14 American Standard Pipe Thread Entrance. 2 LBS.
2000-122B Brake Parts Ametek Gemco Rotary Limit Switch, Worm Gear Type, 250 to 1 Ratio, 4 Cam, Single Pole Double Throw Switches, NEMA 7 Enclosure, Maximum Speed 1000 RPM Clock Wise or CCW., 1/2 Inch Diameter Input Shaft, includes # 404 Woodruff Keyway, 1/2 -14 American Standard Pipe Thread Entrance. 2 LBS.
2000-1234 Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
20 to 1 Ratio Gear Ratio, the cam block rotates once every 20 turns of the main shaft 
4 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Qty. 2, Standard Cams allow switch contacts to be opened for 25 or 335 Degrees  
Qty. 2, Non-Standard Cams allow switch contacts to be opened for 90 or 270 Degrees 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 1/8th 
Maximum switch setting @ 19 & 1/4 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-1235 Brake Parts Ametek Gemco 2000 Series Geared Limit Switch. NEMA 1 Enclosure. 50 to 1 Gear Ratio. Single S55, 25 Degree Cam Bottom circuit. Without an electrical switch. This was manufactured for an OEM who probably modified this unit as it does not have a switch (3LBS) 1/7
2000-124B Brake Parts Ametek Gemco Rotary Limit Switch, Worm Gear Type, 1000 to 1 Gear Ratio, Qty. 4, Independent Circuits / Cams / Switches. Precision Snap Switches, Single Pole Double Throw S.P.D.T., NEMA 7 Enclosure, Maximum Speed 1000 RPM Clock Wise or CCW., 1/2 Inch Diameter Input Shaft, includes # 404 Woodruff Keyway, 1/2 -14 American Standard Pipe Thread Entrance (6LBS)
2000-1256 Brake Parts Ametek Gemco Rotary Limit Switch, Series 2000 Worm Gear Type, 100 to 1 Ratio, 2 Cam, U.L. Listed Snap Action Switches, S.P.S.T. Single Pole Single Throw, NEMA 1 & 12 Fibralloy Enclosure, Maximum Speed 1000 RPM Clock Wise or CCW., 1/2 Inch Diameter Input Shaft, includes # 404 Woodruff Keyway, 1/2 -14 American Standard Pipe Thread Entrance. (2 LBS) Old Price
2000-1271 Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
40 to 1 Ratio Gear Ratio, the cam block rotates once every 40 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 1/4 
Maximum switch setting @ 37 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
Like a 2000-4B has an Engineered Part Number for a Special Shaft & Bracket  
(3LBS) 1/8
2000-129B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
150 to 1 Ratio Gear Ratio, the cam block rotates once every 150 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch, 4 
Maximum switch setting @ 135 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(3LBS)
2000-12B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
40 to 1 Ratio Gear Ratio, the cam block rotates once every 40 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Cast Aluminum Enclosure, Watertight 
Turns required to reset switch 1/4 
Maximum switch setting @ 37 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-130B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
300 to 1 Ratio Gear Ratio, the cam block rotates once every 300 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch, 6 & 1/2 
Maximum switch setting @ 265 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(3LBS)
2000-131B Brake Parts Ametek Gemco Rotary Limit Switch, Worm Gear Type, 600 to 1 Gear Ratio, Qty. 2, Circuits / Cams / switches. Precision Snap Action Switches are Single Pole Double Throw / S.P.D.T. , NEMA 12 Enclosure, Maximum Speed 1000 RPM Clock Wise or CCW., 1/2 Inch Diameter Input Shaft, includes # 404 Woodruff Keyway, 1/2 -14 American Standard Pipe Thread Entrance (3LBS)
2000-132B Brake Parts Ametek Gemco Rotary Limit Switch, Worm Gear Type, 150 to 1 Ratio, 2 Cam, Single Pole Double Throw Switches, NEMA 4 Enclosure, Maximum Speed 1000 RPM Clock Wise or CCW., 1/2 Inch Diameter Input Shaft, includes # 404 Woodruff Keyway, 1/2 -14 American Standard Pipe Thread Entrance. 2 LBS.
2000-133B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
300 to 1 Ratio Gear Ratio, the cam block rotates once every 300 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 04537001 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Cast Aluminum Enclosure, Watertight 
Turns required to reset switch 6 & 1/2 
Maximum switch setting @ 265 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-134B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
600 to 1 Ratio Gear Ratio, the cam block rotates once every 600 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 04537001 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Cast Aluminum Enclosure, Watertight 
Turns required to reset switch 16 
Maximum switch setting @ 555 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-135B Brake Parts Ametek Gemco Rotary Limit Switch. Worm Gear Type, Two Independent Circuits / Switches / Cams. 150 to 1 Gear Ratio. UL Listed S.P.D.T. Precision Snap Action Switches. NEMA 7 & 9 Rated Die Cast Aluminum Enclosure for Hazardous Locations, designed to meet the NEC Code for Class 1, Group D, and Class 2, Groups E, F & G Locations. Maximum Speed 1000 RPM. Maximum setting at 135 Input shaft Turns. 4 Turns to Reset (6LBS)
2000-137B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
5 to 1 Ratio Gear Ratio, the cam block rotates once every 5 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 1/8 
Maximum switch setting @ 4 & 3/4 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(4LBS)
2000-138B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
10 to 1 Ratio Gear Ratio, the cam block rotates once every 10 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 1/4 
Maximum switch setting @ 9 & 1/4 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(4LBS)
2000-139B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
40 to 1 Ratio Gear Ratio, the cam block rotates once every 40 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 3/4 
Maximum switch setting @ 37 & 3/4 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(4LBS)
2000-13B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
50 to 1 Ratio Gear Ratio, the cam block rotates once every 50 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Cast Aluminum Enclosure, Watertight 
Turns required to reset switch 1/4 
Maximum switch setting @ 46 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-140B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
250 to 1 Ratio Gear Ratio, the cam block rotates once every 250 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 6 
Maximum switch setting @ 237 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(4LBS)
2000-141B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
500 to 1 Ratio Gear Ratio, the cam block rotates once every 500 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 15 & 1/4 
Maximum switch setting @ 460 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(4LBS)
2000-142B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
1000 to 1 Ratio Gear Ratio, the cam block rotates once every 1000 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 29 
Maximum switch setting @ 920 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(4LBS)
2000-145B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
5 to 1 Ratio Gear Ratio, the cam block rotates once every 5 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Enclosure, Watertight 
Turns required to reset switch 1/8 
Maximum switch setting @ 4 & 3/4 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-146B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
10 to 1 Ratio Gear Ratio, the cam block rotates once every 10 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Enclosure, Watertight 
Turns required to reset switch 1/4 
Maximum switch setting @ 9 & 1/4 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(4LBS)
2000-147B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
20 to 1 Ratio Gear Ratio, the cam block rotates once every 20 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Enclosure, Watertight 
Turns required to reset switch 1/2 
Maximum switch setting @ 19 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-148B Brake Parts Ametek Gemco Rotary Limit Switch. Series 2000 Worm Gear Type. Qty. 2, Independent Circuits / Cams / Switches. UL Listed Precision Snap Action Switches, Double Pole Double Throw / D.P.D.T. that can be wired either Normally Open or Normally Closed. 30 to 1 Gear Ratio. NEMA 4 Cast Watertight Enclosure. Up to 1000 RPM no minimum. Clock Wise or CCW Rotation. 1/2 Inch Diameter Input Shaft with a # 404 Woodruff Key & Keyway. 1/2 -14 American Standard Pipe Thread Electrical Entrance. Maximum operating temperature 180 degrees F. Standard Dwell Cams of 25 Degrees, other dwells are available (6LBS)
2000-149B Brake Parts Ametek Gemco Rotary Limit Switch. Series 2000 Worm Gear Type. Standard 2 Cam / Circuit / Switch with Double Pole Double Throw Snap Action Switches (D.P.D.T.) 40 to 1 Gear Ratio. Cast Aluminum NEMA Type 4 Watertight Enclosure. Up to 1000 RPM no minimum. Clock Wise or CCW Rotation. 1/2 Inch Diameter Input Shaft with a # 404 Woodruff Key & Keyway. 1/2 -14 American Standard Pipe Thread Electrical Entrance. Maximum operating temperature 180 degrees F. 2 LBS. 6 LBS Gross
2000-14B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
60 to 1 Ratio Gear Ratio, the cam block rotates once every 60 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Cast Aluminum Enclosure, Watertight 
Turns required to reset switch 1 & 1/2 
Maximum switch setting @ 58 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-150B Brake Parts Ametek Gemco Rotary Limit Switch. Series 2000 Worm Gear Type. Standard 2 Cam / Circuit / Switch with Double Pole Double Throw Snap Action Switches (D.P.D.T.) 50 to 1 Gear Ratio. Cast Aluminum NEMA Type 4 Watertight Enclosure. Up to 1000 RPM no minimum. Clock Wise or CCW Rotation. 1/2 Inch Diameter Input Shaft with a # 404 Woodruff Key & Keyway. 1/2 -14 American Standard Pipe Thread Electrical Entrance. Maximum operating temperature 180 degrees F. 2 LBS. 6 LBS Gross
2000-151B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
60 to 1 Ratio Gear Ratio, the cam block rotates once every 60 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Enclosure, Watertight 
Turns required to reset switch 1 & 1/2 
Maximum switch setting @ 58 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-152B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
80 to 1 Ratio Gear Ratio, the cam block rotates once every 80 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Enclosure, Watertight 
Turns required to reset switch 1 & 3/4 
Maximum switch setting @ 75 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-153B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
100 to 1 Ratio Gear Ratio, the cam block rotates once every 100 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Enclosure, Watertight 
Turns required to reset switch 2 
Maximum switch setting @ 95 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-154B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
250 to 1 Ratio Gear Ratio, the cam block rotates once every 250 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Enclosure, Watertight 
Turns required to reset switch 6 
Maximum switch setting @ 237 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-155B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
500 to 1 Ratio Gear Ratio, the cam block rotates once every 500 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Enclosure, Watertight 
Turns required to reset switch 15 & 1/4 
Maximum switch setting @ 460 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-156B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
1000 to 1 Ratio Gear Ratio, the cam block rotates once every 1000 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Enclosure, Watertight 
Turns required to reset switch 29 
Maximum switch setting @ 920 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-159B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
5 to 1 Ratio Gear Ratio, the cam block rotates once every 5 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 7 Rated Cast Aluminum Enclosure for Hazardous Locations. Designed to meet the requirements of NEC code for Class 1, Group D 
Turns required to reset switch 1/8 
Maximum switch setting @ 4 & 3/4 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-15B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
80 to 1 Ratio Gear Ratio, the cam block rotates once every 80 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Cast Aluminum Enclosure, Watertight 
Turns required to reset switch 3/4 
Maximum switch setting @ 77 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-160B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
10 to 1 Ratio Gear Ratio, the cam block rotates once every 10 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 7 Rated Cast Aluminum Enclosure for Hazardous Locations. Designed to meet the requirements of NEC code for Class 1, Group D 
Turns required to reset switch 1/4 
Maximum switch setting @ 9 & 1/4 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-161B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
20 to 1 Ratio Gear Ratio, the cam block rotates once every 20 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 7 Rated Cast Aluminum Enclosure for Hazardous Locations. Designed to meet the requirements of NEC code for Class 1, Group D 
Turns required to reset switch 1/2 
Maximum switch setting @ 19 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-162B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
40 to 1 Ratio Gear Ratio, the cam block rotates once every 40 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 7 Rated Cast Aluminum Enclosure for Hazardous Locations. Designed to meet the requirements of NEC code for Class 1, Group D 
Turns required to reset switch 3/4 
Maximum switch setting @ 37 & 3/4 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-163B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
50 to 1 Ratio Gear Ratio, the cam block rotates once every 50 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Double Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 8 Screw Terminals per switch 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 7 Rated Cast Aluminum Enclosure for Hazardous Locations. Designed to meet the requirements of NEC code for Class 1, Group D 
Turns required to reset switch 3/4 
Maximum switch setting @ 46 & 3/4 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-164B Brake Parts Ametek Gemco Rotary Limit Switch. Worm Gear Type, Two Independent Circuits / Switches / Cams. 80 to 1 Gear Ratio. UL Listed D.P.D.T. Precision Snap Action Switches. NEMA 7 & 9 Rated Die Cast Aluminum Enclosure for Hazardous Locations, designed to meet the NEC Code for Class 1, Group D, and Class 2, Groups E, F & G Locations. Maximum Speed 1000 RPM. Maximum setting at 75 Input shaft Turns. 1 & 3/4 Turns to Reset (6LBS)
2000-167B Brake Parts Ametek Gemco Rotary Limit Switch. Worm Gear Type, Two Independent Circuits / Switches / Cams. 250 to 1 Gear Ratio. UL Listed D.P.D.T. Precision Snap Action Switches. NEMA 7 & 9 Rated Die Cast Aluminum Enclosure for Hazardous Locations, designed to meet the NEC Code for Class 1, Group D, and Class 2, Groups E, F & G Locations. Maximum Speed 1000 RPM. Maximum setting at 237 Input shaft Turns. 6 Turns to Reset (6LBS)
2000-168B Brake Parts Ametek Gemco Rotary Limit Switch. Worm Gear Type, Two Independent Circuits / Switches / Cams. 500 to 1 Gear Ratio. UL Listed D.P.D.T. Precision Snap Action Switches. NEMA 7 & 9 Rated Die Cast Aluminum Enclosure for Hazardous Locations, designed to meet the NEC Code for Class 1, Group D, and Class 2, Groups E, F & G Locations. Maximum Speed 1000 RPM. Maximum setting at 460 Input shaft Turns. 15 & 1/4 Turns to Reset (6LBS)
2000-169B Brake Parts Ametek Gemco Rotary Limit Switch. Worm Gear Type, Two Independent Circuits / Switches / Cams. 1000 to 1 Gear Ratio. UL Listed D.P.D.T. Precision Snap Action Switches. NEMA 7 & 9 Rated Die Cast Aluminum Enclosure for Hazardous Locations, designed to meet the NEC Code for Class 1, Group D, and Class 2, Groups E, F & G Locations. Maximum Speed 1000 RPM. Maximum setting at 920 Input shaft Turns. 29 Turns to Reset (6LBS)
2000-16B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
100 to 1 Ratio Gear Ratio, the cam block rotates once every 100 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Cast Aluminum Enclosure, Watertight 
Turns required to reset switch 3/4 
Maximum switch setting @ 94 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-171B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
150 to 1 Ratio Gear Ratio, the cam block rotates once every 150 turns of the main shaft 
3 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Cast Aluminum Enclosure, Watertight 
Turns required to reset switch 4 
Maximum switch setting @ 135 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(5LBS)
2000-174B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
5 to 1 Ratio Gear Ratio, the cam block rotates once every 5 turns of the main shaft 
3 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 04537004 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 1/16th 
Maximum switch setting @ 4 & 3/4 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(4LBS)
2000-175B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
10 to 1 Ratio Gear Ratio, the cam block rotates once every 10 turns of the main shaft 
3 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 04537004 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 1/16th 
Maximum switch setting @ 9 & 1/2 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(4LBS)
Updated on February 26, 2016 1:21 PM
203 Vest Avenue
Valley Park, MO 63088
Toll Free: (888) SPECTECH
Phone: (636) 537-0202
Fax: (636) 537-1405
E:mail: sales@spectechind.com