Large-Object Safety Limit Switches

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23 Products

Compact Safety Limit Switches


Style A	Style B	Style C	Style D

Style E	Style F	Style G

Shorter and thinner than other safety limit switches, these are sized to fit tight spaces. They protect machinery and ensure the safety of personnel. Positive-force contacts open the circuit when actuated, even if a spring fails or the contacts stick. They send a signal to your circuit when an object hits the actuator—for instance, a box on a conveyor runs into the switch, stopping the conveyor. They open and close circuits as fast as snap-acting switches, but they have a bigger actuator for large objects. All are NEMA and IP rated for protection from washdowns.

Plunger Actuator—Switches with a plunger actuator require a push to actuate, similar to a button.

Roller Plunger Actuator—Switches with a roller plunger actuator have a roller that moves parallel to the mounting direction when an object pushes the actuator. This reduces friction during actuation to limit wear and tear on your switch.

Roller Lever Actuator—Switches with a roller lever actuator use a lever with a roller at the end to activate. This allows parts to glide across the actuation surface with minimal friction, limiting wear and tear.

Rod Actuator—Switches with a rod actuator have a large actuation area with a rod extending out of the actuator’s body. They’re best where the object actuating the switch is far away.

Wobble Stick Actuator—Switches with a wobble stick actuator have an arm that rotates 360°, so you don’t need to align it in a specific direction. The actuator won’t snap if pushed backward, such as if there’s a jam in your system.

Styles E and F—Styles E and F have an actuator that allows you to adjust its height, making it easier to align the switch with the target during installation.

NEMA 13 Enclosure Rating and IP67 Enclosure Rating—NEMA 13 and IP67 rated switches are protected from oil/coolant spraying and temporary submersion.

												Housing				Conduit
	Style	No. of Circuits Controlled	Switch Starting Position	Switch Action	Switch Designation	Switching Current @ Voltage	Max. Voltage	Actuation Torque, in·ozf	Operating Temp. Range, ° F	Actuator Ht.	No. of Terminals	Lg.	Ht.	Dp.	Housing Material	Trade Size	Thread Size	Enclosure Rating		Each
Plunger Actuator







				Screw-Terminal Wire Connection

				A	1	1 Off or 1 On	Momentary	SPDT	3 amp @ 240V AC, 0.27 amp @ 250V DC	240V AC 250V DC	—	-40 to 185	0.7"	4	1.2"	2.6"	1.2"	Plastic	1/2	—	NEMA 4X, NEMA 13, IP66, IP67	00000000	000000


				A	1	1 Off or 1 On	Momentary	SPDT	10 amp @ 240V AC, 4 amp @ 24V DC	240V AC 24V DC	—	-22 to 176	0.5"	4	1.2"	2.4"	1.2"	Plastic	—	M20	NEMA 4, IP65	00000000	000000
				A	1	1 Off or 1 On	Momentary	SPDT	10 amp @ 300V AC, 10 amp @ 250V DC	300V AC 250V DC	—	-40 to 185	0.7"	4	1.2"	2.6"	1.2"	Zinc	1/2	—	NEMA 4, NEMA 13, IP66, IP67	0000000	00000


				Roller Plunger Actuator







								Screw-Terminal Wire Connection

								B	1	1 Off or 1 On	Momentary	SPDT	3 amp @ 240V AC, 0.27 amp @ 250V DC	240V AC 250V DC	—	-40 to 185	1.1"	4	1.2"	2.6"	1.2"	Plastic	1/2	—	NEMA 4X, NEMA 13, IP66, IP67	00000000	00000


								B	1	1 Off or 1 On	Momentary	SPDT	10 amp @ 240V AC, 4 amp @ 24V DC	240V AC 24V DC	—	-22 to 176	1.2"	4	1.2"	2.4"	1.2"	Plastic	—	M20	NEMA 4, IP65	00000000	000000
								B	1	1 Off or 1 On	Momentary	SPDT	10 amp @ 300V AC, 10 amp @ 250V DC	300V AC 250V DC	—	-40 to 185	1.1"	4	1.2"	2.6"	1.2"	Zinc	1/2	—	NEMA 4, NEMA 13, IP66, IP67	0000000	000000


								Roller Lever Actuator







												Screw-Terminal Wire Connection

												C	1	1 Off or 1 On	Momentary	SPDT	10 amp @ 240V AC, 4 amp @ 24V DC	240V AC 24V DC	—	-22 to 176	1.1"	4	1.2"	2.4"	1.2"	Plastic	—	M20	NEMA 4, IP65	00000000	000000


												D	1	1 Off or 1 On	Momentary	SPDT	3 amp @ 240V AC, 0.27 amp @ 250V DC	240V AC 250V DC	17.6	-40 to 185	2"	4	1.2"	2.6"	1.2"	Plastic	1/2	—	NEMA 4X, NEMA 13, IP66, IP67	00000000	00000
												D	1	1 Off or 1 On	Momentary	SPDT	10 amp @ 300V AC, 10 amp @ 250V DC	300V AC 250V DC	17.6	-40 to 185	2.1"	4	1.2"	2.6"	1.2"	Zinc	1/2	—	NEMA 4, NEMA 13, IP66, IP67	0000000	00000
												E	1	1 Off or 1 On	Momentary	SPDT	3 amp @ 240V AC, 0.27 amp @ 250V DC	240V AC 250V DC	17.6	-40 to 185	1.6" to 3.3"	4	1.2"	2.6"	1.2"	Plastic	1/2	—	NEMA 4X, NEMA 13, IP66, IP67	00000000	00000
												E	1	1 Off or 1 On	Momentary	SPDT	10 amp @ 300V AC, 10 amp @ 250V DC	300V AC 250V DC	17.6	-40 to 185	1.6" to 3.3"	4	1.2"	2.6"	1.2"	Zinc	1/2	—	NEMA 4, NEMA 13, IP66, IP67	0000000	000000


												Rod Actuator







																Screw-Terminal Wire Connection

																F	1	1 Off or 1 On	Momentary	SPDT	10 amp @ 600V AC, 10 amp @ 250V DC	600V AC 250V DC	17.6	-40 to 185	0.6" to 5.8"	4	1.2"	2.4"	1.2"	Plastic	1/2	—	NEMA 4, NEMA 13, IP66, IP67	00000000	00000


Wobble Stick Actuator







																Screw-Terminal Wire Connection

																G	1	1 Off or 1 On	Momentary	SPDT	3 amp @ 240V AC, 0.27 amp @ 250V DC	240V AC 250V DC	—	-40 to 185	4.9"	4	1.2"	2.4"	1.2"	Plastic	1/2	—	NEMA 4X, NEMA 13, IP66, IP67	00000000	000000

Safety Limit Switches


Style A	Style B	Style C	Style D

Style E	Style F	Style G

Protect machinery and ensure the safety of personnel—these switches have positive-force contacts that will open the circuit when actuated even if a spring fails or the contacts stick. When an object in motion comes into contact with the actuator, it sends a signal to open or close a circuit. These switches have the rapid-closing action of a snap-acting switch, but with a larger actuator. This makes them a good choice for use with large objects—for instance, a box on a conveyor runs into the switch, stopping the conveyor.

Plunger Actuator—Switches with a plunger actuator require a push to actuate, similar to a button.

Rod Actuator—Switches with a rod actuator use a rod extending out of the body to actuate, so they’ll activate even if an object is far away.

Wobble Stick Actuator—Switches with a wobble stick actuator have an arm that rotates 360°, so you don’t need to align it in a specific direction. Since the actuator is flexible, it won’t snap if pushed backward. That makes these switches a great choice for systems that get jammed often.

Styles D-F—Styles D, E, and F have an actuator that allows you to adjust its height, making it easier to align switch with the target during installation.

Plastic Actuator—Switches with a plastic actuator limit wear and tear on passing objects better than switches with a steel actuator.

Steel Actuator—Switches with a steel actuator are more durable than switches with a plastic actuator. They also handle higher loads.

													Housing				Conduit
	Style	No. of Circuits Controlled	Switch Starting Position	Switch Action	Switch Designation	Actuator Material	Switching Current @ Voltage	Max. Voltage	Actuation Torque, in·ozf	Operating Temp. Range, ° F	Actuator Ht.	No. of Terminals	Lg.	Ht.	Dp.	Housing Material	Trade Size	Thread Size	Enclosure Rating		Each
Plunger Actuator







				Screw-Terminal Wire Connection

				A	1	1 Off or 1 On	Momentary	SPDT	Steel	10 amp @ 600V AC, 10 amp @ 250V DC	600V AC 250V DC	—	-13 to 185	1.3"	5	1.7"	3.2"	1.7"	Zinc	1/2	—	NEMA 4, NEMA 13, IP67	0000000	0000000


				Roller Plunger Actuator







								Screw-Terminal Wire Connection

								B	1	1 Off or 1 On	Momentary	SPDT	Steel	10 amp @ 600V AC, 10 amp @ 250V DC	600V AC 250V DC	—	-13 to 185	1.8"	5	1.7"	3.2"	1.7"	Zinc	1/2	—	NEMA 4, NEMA 13, IP67	0000000	000000


								Roller Lever Actuator







												Screw-Terminal Wire Connection

												C	1	1 Off or 1 On	Momentary	SPDT	Plastic	3 amp @ 240V AC, 1.5 amp @ 24V DC	240V AC 24V DC	—	-22 to 165	1.5"	4	1.7"	2.9"	1.6"	Plastic	—	M20	NEMA 4X, IP66, IP67	00000000	000000


												C	1	1 Off or 1 On	Momentary	SPDT	Plastic	10 amp @ 600V AC, 10 amp @ 250V DC	600V AC 250V DC	—	-13 to 185	2.3"	5	1.7"	3.2"	1.7"	Zinc	1/2	—	NEMA 4, NEMA 13, IP67	00000000	000000
												D	1	1 Off or 1 On	Momentary	SPDT	Plastic	10 amp @ 600V AC, 10 amp @ 250V DC	600V AC 250V DC	46.4	-40 to 185	2.1" to 4.2"	5	1.7"	3.2"	1.7"	Zinc	1/2	—	NEMA 4, NEMA 13, IP67	0000000	000000
												D	1	1 Off or 1 On	Momentary	SPDT	Steel	10 amp @ 600V AC, 10 amp @ 250V DC	600V AC 250V DC	—	-40 to 185	2.5" to 4.5"	5	1.7"	3.2"	1.7"	Zinc	1/2	—	NEMA 4, NEMA 13, IP67	00000000	000000
												E	1	1 Off or 1 On	Momentary	SPDT	Plastic	10 amp @ 600V AC, 10 amp @ 250V DC	600V AC 250V DC	—	-40 to 185	3.1" to 5.1"	5	1.7"	3.2"	1.7"	Zinc	1/2	—	NEMA 4, NEMA 13, IP67	00000000	000000


												Rod Actuator







																Screw-Terminal Wire Connection

																F	1	1 Off or 1 On	Momentary	SPDT	Steel	3 amp @ 240V AC, 1.5 amp @ 24V DC	240V AC 24V DC	24.8	-22 to 165	0.5" to 8"	4	1.7"	2.9"	1.6"	Plastic	—	M20	NEMA 4X, IP66, IP67	00000000	000000


																Wobble Stick Actuator







	Screw-Terminal Wire Connection

	G																		1	1 Off or 1 On	Momentary	SPDT	Plastic	10 amp @ 600V AC, 10 amp @ 250V DC	600V AC 250V DC	—	-13 to 185	5.7"	5	1.7"	3.2"	1.7"	Zinc	1/2	—	NEMA 4, NEMA 13, IP67	00000000	000000


	G	1																	1 Off or 1 On	Momentary	SPDT	Steel	10 amp @ 600V AC, 10 amp @ 250V DC	600V AC 250V DC	—	-13 to 185	5.3"	5	1.7"	3.2"	1.7"	Zinc	1/2	—	NEMA 4, NEMA 13, IP67	00000000	000000