SPST-NO Light Switches | McMaster-Carr

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17 Products

Thumb Light Switches


Rotary	Rocker	Rocker with Vertical Line/Circle

Install these switches inline on a lamp cord.

Switch Designation	Message (Location)	Message Color	Switching Current @ Voltage	Wire Connection Method	Certification		Each







Rotary Actuator

1	Brown	Maintained	SPST-NO	—	—	3 amp @ 125V AC	Snap On	UL Listed, CSA Certified	14695K91	00000




		Rocker Switch Actuator

		1	Black	Maintained	SPST-NO	Vertical Line (Top), Circle (Bottom)	White	6 amp @ 120V AC	Snap On	UL Listed, C-UL Listed	7798N12	00000


		1	White	Maintained	SPST-NO	—	—	6 amp @ 120V AC	Snap On	UL Listed, C-UL Listed	7798N11	00000

Wireless Light Switches

Control lights by transmitting a wireless signal from these switches to a control relay (sold separately) on your fixture. Switches can be surface mounted with a wall plate or used as a hand-held remote. No batteries or secondary power source are needed.

Control Relays

Control Relay

No. of Circuits Controlled	Switch Starting Position	Switch Designation	Input Voltage, V AC	Switching Current @ Voltage	Wire Lead Lg.		Each
1	1 Off	SPST-NO	120	5 amp @ 120V AC/277V AC	16"	1171T61	0000000
1	1 Off	SPST-NO	208/277	5 amp @ 120V AC/277V AC	16"	1171T62	000000

Vibration-Resistant 22 mm Panel-Mount Lever Switches

Prevent accidental actuation from bumps—these switches require you to grip and twist the lever to turn the switch. The contact block and actuator are all one piece, so they won’t separate in high-vibration applications. Install them in a standard panel cutout.

	No. of Circuits Controlled	Switch Starting Position	Switch Action	No. of Terminals	Switch Designation	Switching Current @ Voltage	Max. Voltage	Dia.	Dp. Behind Panel	Enclosure Rating	Certification	Specs. Met		Each
2 Positions with Screw Terminals



	1 1/8"	1	1 Off	Maintained	2	SPST-NO	0.6 amp @ 120V AC, 0.22 amp @ 125V DC	240V AC 250V DC	1 1/8"	1 11/16"	NEMA 3, NEMA 12, IP65	UL Listed, CSA Certified, CCC Marked, CE Marked	UL 508	6894N11	000000

Panel-Mount Set-to-the-Minute Time and Day Activated Switches

7-Day Timing

Cycle, 2 Circuits

Controlled

Install these switches in a panel cutout. More precise than other time and day switches, they program on/off times for equipment down to the exact minute. The seven-day timing cycle can perform a different program each day of the week. All have an override to bypass the programmed on/off settings. A backup battery maintains the program during a power outage.

2 Circuits Controlled—Two-circuit switches can apply a different program to each circuit.

												For Panel Cutout
	No. of Circuits Controlled	Switching Current @ Voltage	Input Voltage, V AC	Max. On/Off Cycles, per day	Min. Set Time, min.	Timing Adjustment Style	With Override	Switch Designation	Ht.	Wd.	Dp.	Ht.	Wd.	Wire Connection	Certification		Each
7-Day Timing Cycle—With Battery Backup



		2	15 amp @ 250V AC	120/240	20	1	Push Button	Yes	SPST-NO	2.8"	2.8"	2.2"	2.68"	2.68"	Screw Terminal	UL Recognized Component, CSA Certified	70395K81	0000000

Surface/DIN-Rail Mount Set-to-the-Minute Time and Day Activated Switches

24-Hr. Timing Cycle

Mount these switches to a flat surface or attach to DIN rail. More precise than other time and day switches, they program on/off times for equipment down to the exact minute. All have an override to bypass the programmed on/off settings. A backup battery maintains the program during a power outage.

24-Hr. Timing Cycle—24-hour switches repeat the same program daily. They control two circuits and can apply a different program to each circuit.

												Mounting			For Panel Cutout
	No. of Circuits Controlled	Switching Current @ Voltage	Input Voltage, V AC	Max. On/Off Cycles, per day	Min. Set Time, min.	Timing Adjustment Style	With Override	Switch Designation	Ht.	Wd.	Dp.	Fasteners Included	No. of Holes	For DIN Rail Ht., mm	Ht.	Wd.	Wire Connection	Certification		Each
24-Hr. Timing Cycle—With Battery Backup



		2	15 amp @ 250V AC	120/240	12	1	Push Button	Yes	SPST-NO	3.8"	3.8"	2.2"	No	2	35	3.62"	3.62"	Screw Terminal	UL Recognized Component, CSA Certified	70395K71	0000000

30 mm Panel-Mount Push-Button-Actuator Emergency Stop Switches

Immediately cut power with a single push. These switches are rated for protection from low-pressure streams of water and oil/coolant spraying. They have positive force contacts that will open a circuit when actuated even if a spring fails or the contacts stick. Mount them in a standard panel cutout.

Metal Actuator Base with Screw-Terminal Wire Connection—Illuminated

Image of Product. Front orientation. Emergency Stop Switches. 30 mm Panel-Mount Push-Button-Actuator Emergency Stop Switches, Illuminated, Pull Reset.

Pull Reset

Illuminated switches are visible in low light. They include a bulb. If wiring the switch and the bulb to the same circuit, the circuit voltage must not exceed bulb voltage.

Pull Reset—Turn pull switches back on by pulling the button.

	Switch Starting Position	Switch Action	No. of Terminals	Switch Designation	Actuator Color	Switching Current @ Voltage	Max. Voltage	Dia.	For Max. No. of Contact Blocks	Dp. Behind Panel	Choose a Bulb Voltage		Each
Pull Reset



	1	1 Off	Maintained	4	SPST-NO	Red	6 amp @ 120V AC 5 amp @ 24V DC	600V AC 250V DC	1 1/2"	4	2 1/16"	24V AC/24V DC, 120V AC/120V DC	9235K36	0000000

Accessories and Replacements for Emergency Stop Switches

Contact Blocks for 1 ½" and 2 ¼" Dia. Switches

Image of Product. Front orientation. Switch Contact Blocks. 30 mm Panel-Mount Push-Button-Actuator Emergency Stop Switches.

Additional contact blocks can be added to control more circuits or replace the included contact blocks.

No. of Circuits Controlled	Switch Starting Position	No. of Terminals	Switch Designation	Certification	Specs. Met		Each
1	1 Off	2	SPST-NO	C-UL Listed, CE Marked, CSA Certified, UL Listed	EN 60947-1, EN 60947-5-1, UL 508	9235K382	000000

Replacement Actuators for 1 ½" Diameter Switches

Image of Product. Front orientation. Emergency Stop Switch Actuators. 30 mm Panel-Mount Push-Button-Actuator Emergency Stop Switches.

						Pull Reset
	Actuator Clarity	Actuator Color	Bulb Type	Bulb Color	Choose a Bulb Voltage		Each
Metal Actuator Base—Illuminated



		Clear	Red	LED	Red	24V AC/24V DC, 120V AC/120V DC, 240V AC/240V DC	9235K48	0000000

Replacement Bulbs for 1 ½" Diameter Switches with 24V AC/24 V DC Bulb

	Bulb
Voltage	Shape No.	Dia.	Overall Lg.	Bulb Material	Color	Light Tech.	Rated Life, hr.		Each
24V AC, 24V DC	T3 1/4	3/8"	1 1/8"	Plastic	Red	LED	100,000	5453T171	000000

Replacement Bulbs for 1 ½" Diameter Switches with 120V AC/120V DC Bulb

	Bulb
Voltage	Shape Number	Dia.	Overall Lg.	Bulb Material	Color	Light Tech.	Rated Life, hr.		Each
130V AC, 130V DC	T3 1/4	3/8"	1 1/8"	Plastic	Red	LED	100,000	5453T176	000000