Push-to-Reset Switches | McMaster-Carr

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38 Products

About Electrical Switches

Choose a switch with the right trigger type, number of inputs, and control functions to power your equipment.

Emergency Stop Outlet-Box-Mount Push-Button Switches

Immediately cut power with a single push. The large palm-sized buttons on these switches provide an easy target, so they're easy to use even while wearing gloves. When the button is depressed, the switch latches and can be locked in that position using a lockout or padlock with a 9/32” shackle diameter (not included). All have positive force contacts that will open the circuit when actuated even if a spring fails or the contacts stick. They're rated NEMA 13 and IP65 for protection from oil/coolant spraying and washdowns.

Plastic Actuator with Screw Terminals
No. of Circuits Controlled	Switch Starting Position	Switch Action	No. of Terminals	Industry Designation	Actuator Color	Cover Color	Switching Current @ Voltage	Max. Voltage	Dia.	Environmental Rating	Specifications Met		Each
2	1 Off (Normally Open) and 1 On (Normally Closed)	Stays Switched (Maintained)	4	DPST-1NO/1NC	Red	Yellow	6 A @ 120 V AC, 2.2 A @ 125 V DC	250V DC 600V AC	2 1/4"	NEMA 13, IP65	UL Listed, CSA Certified, CSA-US Certified, CE Marked, UL 508, EN 60947-5-5, IEC 60947-5-5	66185K61	0000000

30 mm Emergency Stop Panel-Mount Push-Button 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.

Switches with lockout latch when you depress the button and can be locked in that position using a lockout or padlock with a 9/32" shackle diameter.

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.

Turn twist switches back on by twisting the button and pull switches by pulling it. Add an optional lockout (sold separately) on either kind to cover the button and prevent changes to its position.

Additional contact blocks (sold separately) can be added to control more circuits or replace the included contact blocks.

Pull Reset

Twist Reset

Pull Reset with Lockout

Illuminated Pull Reset

Metal Base with Screw Terminals
No. of Circuits Controlled	Switch Starting Position	Switch Action	No. of Terminals	Industry Designation	Actuator Color	Switching Current @ Voltage	Max. Voltage	Dia.	Dp. Behind Panel	For Max. No. of Contact Blocks	Choose a Bulb Voltage		Each
Pull Reset
1	1 On (Normally Closed)	Stays Switched (Maintained)	2	SPST-NC	Red	6 A @ 120 V AC, 5 A @ 24 V DC	250V DC 600V AC	1 1/2"	1 1/2"	8	__	9235K345	0000000
2	1 Off (Normally Open) and 1 On (Normally Closed)	Stays Switched (Maintained)	4	DPST-1NO/1NC	Red	6 A @ 120 V AC, 5 A @ 24 V DC	250V DC 600V AC	1 1/2"	1 1/2"	8	__	9235K346	000000
2	2 On (Normally Closed)	Stays Switched (Maintained)	4	DPST-NC	Red	6 A @ 120 V AC, 5 A @ 24 V DC	250V DC 600V AC	1 1/2"	1 1/2"	8	__	9235K347	000000
Twist Reset
1	1 On (Normally Closed)	Stays Switched (Maintained)	2	SPST-NC	Red	6 A @ 120 V AC, 5 A @ 24 V DC	250V DC 600V AC	1 1/2"	1 1/2"	8	__	9235K338	000000
2	1 Off (Normally Open) and 1 On (Normally Closed)	Stays Switched (Maintained)	4	DPST-1NO/1NC	Red	6 A @ 120 V AC, 5 A @ 24 V DC	250V DC 600V AC	1 1/2"	1 1/2"	8	__	9235K339	000000
2	2 On (Normally Closed)	Stays Switched (Maintained)	4	DPST-NC	Red	6 A @ 120 V AC, 5 A @ 24 V DC	250V DC 600V AC	1 1/2"	1 1/2"	8	__	9235K341	000000
Metal Base with Screw Terminals and Lockout
Pull Reset
2	1 Off (Normally Open) and 1 On (Normally Closed)	Stays Switched (Maintained)	4	DPST-1NO/1NC	Red	6 A @ 120 V AC, 2.2 A @ 125 V DC	150V DC 600V AC	2"	1 7/8"	6	__	66185K71	000000
Metal Base with Screw Terminals—Illuminated
Pull Reset
1	1 Off (Normally Open)	Stays Switched (Maintained)	4	SPST-NO	Red	6 A @ 120 V AC, 5 A @ 24 V DC	250V DC 600V AC	1 1/2"	2 1/16"	4	24V AC/24V DC, 120V AC/120V DC	9235K36	000000
1	1 On (Normally Closed)	Stays Switched (Maintained)	4	SPST-NC	Red	6 A @ 120 V AC, 5 A @ 24 V DC	250V DC 600V AC	1 1/2"	2 1/16"	4	240V AC/240V DC	9235K362	000000
2	1 Off (Normally Open) and 1 On (Normally Closed)	Stays Switched (Maintained)	6	DPST-1NO/1NC	Red	6 A @ 120 V AC, 5 A @ 24 V DC	250V DC 600V AC	1 1/2"	2 15/16"	4	24V AC/24V DC, 120V AC/120V DC, 240V AC/240V DC	9235K38	000000
2	2 On (Normally Closed)	Stays Switched (Maintained)	6	DPST-NC	Red	6 A @ 120 V AC, 5 A @ 24 V DC	250V DC 600V AC	1 1/2"	2 15/16"	4	24V AC/24V DC, 120V AC/120V DC, 240V AC/240V DC	9235K45	000000
Plastic Base with Screw Terminals
Pull Reset
1	1 On (Normally Closed)	Stays Switched (Maintained)	2	SPST-NC	Red	6 A @ 120 V AC, 5 A @ 24 V DC	250V DC 600V AC	1 1/2"	1 1/2"	8	__	9235K342	000000
2	1 Off (Normally Open) and 1 On (Normally Closed)	Stays Switched (Maintained)	4	DPST-1NO/1NC	Red	6 A @ 120 V AC, 5 A @ 24 V DC	250V DC 600V AC	1 1/2"	1 1/2"	8	__	9235K343	000000
Twist Reset
1	1 On (Normally Closed)	Stays Switched (Maintained)	2	SPST-NC	Red	6 A @ 120 V AC, 5 A @ 24 V DC	250V DC 600V AC	1 1/2"	1 1/2"	8	__	9235K335	000000
2	1 Off (Normally Open) and 1 On (Normally Closed)	Stays Switched (Maintained)	4	DPST-1NO/1NC	Red	6 A @ 120 V AC, 5 A @ 24 V DC	250V DC 600V AC	1 1/2"	1 1/2"	8	__	9235K336	000000
2	2 On (Normally Closed)	Stays Switched (Maintained)	4	DPST-NC	Red	6 A @ 120 V AC, 5 A @ 24 V DC	250V DC 600V AC	1 1/2"	1 1/2"	8	__	9235K337	000000

Contact Blocks

For 1 1/2" and 2 1/4" Diameter Switches
No. of Circuits Controlled	Switch Starting Position	No. of Terminals	Industry Designation	Specifications Met		Each
1	1 Off (Normally Open)	2	SPST-NO	UL Listed, CSA Certified, CE Marked, C-UL Listed, UL 508, EN 60947-5-1, EN 60947-1	9235K382	000000
1	1 On (Normally Closed)	2	SPST-NC	UL Listed, CSA Certified, CE Marked, C-UL Listed, UL 508, EN 60947-5-1, EN 60947-1	9235K381	00000
For 2" Diameter Switches
2	1 Off (Normally Open) and 1 On (Normally Closed)	4	DPST-1NO/1NC	UL Listed, CSA Certified, CE Marked, CSA-US Certified, UL 508	6741K71	00000

Replacement Actuators for 1 1/2" Diameter Switches

					Pull Reset		Twist Reset
Actuator Clarity	Actuator Color	Bulb Type	Bulb Color	Choose a Bulb Voltage		Each		Each
Metal Base—Not Illuminated
Opaque	Red	__	__	__	9235K373	000000	9235K372	000000
Metal Base—Illuminated
Clear	Red	LED	Red	24V AC/24V DC, 120V AC/120V DC, 240V AC/240V DC	9235K48	000000	______	00
Plastic Base—Not Illuminated
Opaque	Red	__	__	__	9235K371	00000	9235K369	00000

Replacement Bulbs for Illuminated Pull Reset Switches

Replacement Bulb

	Bulb
Voltage	Shape Number	Diameter	Overall Length	Bulb Material	Color	Light Technology	Rated Life, hrs.		Each
For 1 1/2" Diameter Switches
For Switches with 24V AC/24V DC Bulb
24V AC, 24V DC	T3 1/4	3/8"	1 1/8"	Plastic	Red	LED	100,000	5453T171	000000
For Switches with 120V AC/120V DC Bulb
130V AC, 130V DC	T3 1/4	3/8"	1 1/8"	Plastic	Red	LED	100,000	5453T176	00000

Optional Lockouts for 1-1/2" Diameter Switches

For Maximum Padlock Shackle Diameter		Each
1/4"	9235K368	000000

Metal 22 mm Emergency Stop Panel-Mount Push-Button Switches

Immediately cut power with a single push. These switches meet EN 418 for compliance with European machine directives for emergency stop applications. All have positive force contacts that will open a circuit when actuated even if a spring fails or the contacts stick. They include enough contact blocks to control the number of circuits listed.

Pull reset, illuminated pull reset, and turn reset switches are rated NEMA 4, 13, and IP66. Contact blocks for these switches are rated IP20.

Note: Illuminated switches include a bulb. If wiring the switch and the bulb to the same circuit, the circuit voltage must not exceed bulb voltage.

Additional contact blocks (sold separately) can be added to control more circuits, or replace the included contact block.

Switches

Illuminated Pull Reset

Pull Reset with Screw Terminals—Illuminated
No. of Circuits Controlled	Switch Starting Position	Switch Action	No. of Terminals	Industry Designation	Actuator Color	Switching Current @ Voltage	Max. Voltage	Dia.	Dp. Behind Panel	For Max. No. of Contact Blocks	Choose a Bulb Voltage		Each
1	1 On (Normally Closed)	Stays Switched (Maintained)	2	SPST-NC	Red	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC 600V DC	1 3/16"	1 13/16"	4	24V AC/24V DC, 120V AC	6741K74	000000
1	1 On (Normally Closed)	Stays Switched (Maintained)	2	SPST-NC	Red	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC 600V DC	1 9/16"	1 13/16"	4	24V AC/24V DC, 120V AC	6741K75	000000
2	1 Off (Normally Open) and 1 On (Normally Closed)	Stays Switched (Maintained)	4	DPST-1NO/1NC	Red	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC 600V DC	1 3/16"	1 13/16"	4	24V AC/24V DC, 120V AC	6741K77	000000
2	1 Off (Normally Open) and 1 On (Normally Closed)	Stays Switched (Maintained)	4	DPST-1NO/1NC	Red	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC 600V DC	1 9/16"	1 13/16"	4	24V AC/24V DC, 120V AC	6741K79	000000
2	1 Off (Normally Open) and 1 On (Normally Closed)	Stays Switched (Maintained)	4	DPST-1NO/1NC	Red	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC 600V DC	2 3/8"	1 13/16"	4	24V AC/24V DC, 120V AC	6741K81	000000
2	2 On (Normally Closed)	Stays Switched (Maintained)	4	DPST-NC	Red	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC 600V DC	1 3/16"	1 13/16"	4	24V AC/24V DC, 120V AC	6741K78	000000
2	2 On (Normally Closed)	Stays Switched (Maintained)	4	DPST-NC	Red	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC 600V DC	1 9/16"	1 13/16"	4	24V AC/24V DC, 120V AC	6741K61	000000

Emergency Stop Label for Switch without Lockout—Yellow Polyamide Plastic (2 3/8" Dia.)

6741K72

Each

00000

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.

No. of Circuits Controlled	Switch Starting Position	No. of Terminals	Industry Designation	Environmental Rating		Each
1	1 On (Normally Closed)	2	SPST-NC	IP20	9209K116	000000
2	1 Off (Normally Open) and 1 On (Normally Closed)	4	DPST-1NO/1NC	__	6741K71	00000
2	2 On (Normally Closed)	4	DPST-NC	IP20	6741K1	00000