0.27A Switches | McMaster-Carr

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10 Products

Switch Contact Blocks

Make or break an electrical circuit. These contact blocks mount to manual switches and transmit an electrical signal when the switch actuator is engaged. You can stack multiple blocks, so a single switch can control several circuits. This is helpful in setups that require multiple systems to turn on or off at the same time. For example, the switch on a conveyor line could turn off the conveyor and turn on a diverter and alarm.

	Switch Starting Position	No. of Terminals	Switch Designation	Wire Connection	Enclosure Rating	For Switch Manufacturer Series		Each
Schneider Electric



	1	1 Off	2	SPST-NO	Screw Terminal	IP20	XB5	8008N11	000000


	1	1 On	2	SPST-NC	Screw Terminal	IP20	XB5	8008N12	00000

Limit Switches

Style G

When a moving object contacts the actuator on these switches, they open or close a circuit. They 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.

T-Rod Actuator—Switches with a T-rod actuator have four rods extending in different directions from a pivot point. If an object contacts any of the rods from any direction, these switches actuate. Since they have such a large actuation area, they’re great for detecting moving parts when your machine tool isn’t perfectly aligned.

											Housing
	Style	No. of Circuits Controlled	Switch Starting Position	Switch Action	Switch Designation	Switching Current @ Voltage	Max. Voltage	Operating Temp. Range, ° F	Actuator Ht.	No. of Terminals	Lg.	Ht.	Dp.	Housing Material	Conduit Thread Size	Enclosure Rating		Each
T-Rod Actuator







				Screw-Terminal Wire Connection

				G	2	2 Off or 2 On	Maintained	DPDT	10 amp @ 240V AC, 0.27 amp @ 250V DC	240V AC 250V DC	-13 to 158	7.9"	8	3.4"	3.7"	2.1"	Zinc	PG-13.5	IP54	7988K106	0000000

Compact Safety Limit Switches


Style A	Style B	Style D

Style E	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.

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.

Style E—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
	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	Conduit Trade 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	6352K201	000000


				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	6352K202	00000


								Roller Lever Actuator







												Screw-Terminal Wire Connection

												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	6352K203	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	6352K204	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	6352K205	000000

Frame-Mounted Safety Switches


Key Shown Actuating from the Side	Style D

Also known as interlock switches, these ensure the safety of personnel by automatically shutting off power to machinery when an access door opens. Mount the switch to the door frame and mount a key to the door so that the key is inserted into the switch when the door is closed. When the door opens, the key is removed from the switch and the machine shuts down. They’re often used with machine guards for large robots.

Style D—Style A-G switches have positive-force, normally closed contacts that will open a circuit when the switch is actuated even if a spring fails or the contacts stick.

IP67 Enclosure Rating—IP67 rated switches protect against temporary submersion.

Key Included—All switches require an actuator key, but not all include one—check whether you need to pick out a separate actuator key. For some switch styles, you can also select the mounting orientation of the key.

									Housing			Conduit
	Style	No. of Circuits Controlled	Switch Starting Position	Switch Action	No. of Terminals	Switch Designation	Switching Current @ Voltage	Max. Voltage	Ht.	Wd.	Dp.	Trade Size	Thread Type	Key Included	Enclosure Rating		Each
Screw-Terminal Wire Connection with Positive-Force Normally Closed Contacts



		D	3	1 Off and 2 On	Maintained	6	3PST-1NO/2NC	6 amp @ 120V AC, 0.27 amp @ 24V DC	240V AC 250V DC	3.8"	1.2"	1.2"	1/2	NPT	Yes	IP67	65665K16	000000

Actuator Keys

Flexible

Flexible—Flexible keys pivot at least 15°, making them easier to align with switches during installation.

				O'all, mm
	For Style	Angle Range	Adjustment Direction	Lg.	Wd.	Mounting Fasteners Included		Each
Flexible



		D	0° to 15°	Up/Down/Left/Right	48.9	55	No	65665K167	000000