3V DC Switches | McMaster-Carr

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16 Products

Magnetically Actuated Switches


Style J	Style K

3-Pole

M8 Plug

4-Pole

M12

Plug

These switches actuate when a magnet comes within sensing distance, and reset when the magnet moves away. They’re often used to detect when a door or window opens. Mount the switch in a stationary position, such as a door frame, and mount the magnet to a movable object, such as the door. They do not include a safety relay and cannot be used with safety-guard doors found on machinery.

M8 Connection and M12 Connection—Switches with a M12 or M8 plug connect to cords with a socket (sold separately), allowing you to quickly connect and disconnect the switch.

LED Status Indicator—Switches with an LED status indicator let you visually confirm that it’s connected and whether it’s actuated.

IP65 Enclosure Rating—IP65 rated switches protect against rinsing and dust.

IP67 Enclosure Rating—IP67 rated switches protect against temporary submersion, as well as dust and dirt.

IP68 Enclosure Rating—IP68 rated switches protect against washdowns and continuous submersion.

IP69K Enclosure Rating—Use IP69K rated switches in demanding environments, such as roadways.

	Switches																	Replacement Magnets
								Wire Leads
	Style	No. of Circuits Controlled	Switch Starting Position	Switch Designation	Switching Current @ Voltage	Max. Voltage, V DC	Max. Sensing Distance	No. of	Lg., ft.	Dia.	Lg.	Wd.	Ht.	Mounting Thread Size	Enclosure Rating		Each		Each
Plastic Housing with Wire Leads and LED Status Indicator



		J	1	1 Off	SPST-NO	0.2 amp @ 3V DC	30	2.36"	3	6	—	1.09"	0.63"	0.4"	—	IP67	65985K502	0000000	65985K408	000000


		Plastic Housing with 3-Pole M8 Plug and LED Status Indicator



				J	1	1 Off	SPST-NO	0.2 amp @ 3V DC	30	2.36"	—	—	—	1.45"	0.63"	0.4"	—	IP67	65985K501	000000	65985K408	00000


				Stainless Steel Housing with Wire Leads and LED Status Indicator



						K	1	1 Off	SPST-NO	0.2 amp @ 3V DC	30	2.36"	3	6	0.31"	1.96"	—	—	M8 × 1 mm	IP67	65985K513	000000	65985K408	00000


						K	1	1 Off	SPST-NO	0.2 amp @ 3V DC	30	2.36"	3	6	0.47"	1.96"	—	—	M12 × 1 mm	IP67	65985K515	000000	65985K408	00000
						K	1	1 Off	SPST-NO	0.2 amp @ 3V DC	30	2.75"	3	6	0.71"	1.96"	—	—	M18 × 1 mm	IP67	65985K514	000000	65985K408	00000


						Stainless Steel Housing with 4-Pole M12 Plug and LED Status Indicator



								K	1	1 Off	SPST-NO	0.1 amp @ 3V DC	30	2.36"	—	—	0.47"	2.36"	—	—	M12 × 1 mm	IP65, IP68, IP69K	65985K503	000000	65985K408	00000


								K	1	1 Off	SPST-NO	0.1 amp @ 3V DC	30	2.75"	—	—	0.71"	2.36"	—	—	M18 × 1 mm	IP65, IP68, IP69K	65985K504	000000	65985K408	00000
								K	1	1 Off	SPST-NO	0.2 amp @ 3V DC	30	3.94"	—	—	0.71"	2.36"	—	—	M18 × 1 mm	IP68, IP69K	65985K507	000000	65985K408	00000
								K	1	1 On	SPST-NC	0.2 amp @ 3V DC	30	2.36"	—	—	0.47"	2.36"	—	—	M12 × 1 mm	IP65, IP67	65985K505	000000	65985K408	00000
								K	1	1 On	SPST-NC	0.2 amp @ 3V DC	30	2.75"	—	—	0.71"	2.36"	—	—	M18 × 1 mm	IP65, IP67	65985K506	000000	65985K408	00000

Cords for Switches with Plug Connection

	Enclosure Rating


IP67	6897K36	000000
IP68	7138K14	00000

Circuit Board DC Magnetic-Object Proximity Sensors

Send signals in response to changing magnetic fields to trigger processes or monitor position, speed, and current. These sensors communicate with devices such as programmable logic controllers (PLCs) and microcontrollers. They’re also known as hall effect sensors. To install, push their contacts through holes in a circuit board, then solder them in place.

Momentary Switch—Momentary sensors change their output signal based on whether a magnetic field is present. They’re often used to trigger a process in response to changing magnetic fields, such as turning on a light when a door opens. When they detect a north or south pole, they output a low-voltage signal. When they don’t detect a magnetic field at all, they output a high-voltage signal.

	Approx. Difference Between Set Point and Reset Point, G	Switching Freq.	Switching Current @ Voltage	Max. Voltage, V DC	Wire Dia.	Lg., mm	Wd., mm	Ht., mm	Temp. Range, ° F	Pkg. Qty.		Pkg.
Plastic Housing







	Circuit-Board Mount

	Momentary	1 On	395	40	Not Rated	0.008 mA @ 3V DC	5.5	0.015"	3	4	2	-40 to 255	10	8037N11	000000

Foot Switches

Back Pivot with 1 Pedal

Keep your hands free for other tasks by triggering switches with your foot.

Back—Back-pivot switches actuate with a tap of the toe.

Switch Guards—Guards (sold separately) prevent accidental switch actuation.

	Foot Switches													Switch Guards
									Mounting
	No. of Circuits Controlled	Switch Starting Position	Switch Action	Switch Designation	Switching Current @ Voltage	Housing Material	Wire Connection	No. of Terminals	Fasteners Included	No. of Holes	Hole Dia.		Each		Each
1 Speed







				Back Pivot with 1 Pedal

				2	2 Off or 2 On	Momentary	DPDT	15 amp @ 125V AC, 10 amp @ 250V AC, 3 amp @ 3V DC	Iron	Quick-Disconnect Terminal	6	No	2	0.22"	7024K3	000000	7024K5	000000