NEMA 1 Manual Switches | McMaster-Carr

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66 Products

About Motor Switches and Starters

Choosing an Electrical Switch

One Direction

Connect these switches to a cable to control circuits from a distance. They're typically used to turn off production lines and material handling systems. Mount in any position and tug on the cable to send a switching signal. Equipment will not start up again until the switch is manually reset.

For technical drawings and 3-D models, click on a part number.

With Screw Terminals
No. of Circuits Controlled	Switch Starting Position	Switch Action	No. of Terminals	Industry Designation	Switching Current @ Voltage	Max. Voltage	Actuation Force, lbs.	Conduit Trade Size	Mounting Fasteners Included		Each
1 Direction (NEMA 1)
1	1 On (Normally Closed)	Stays Switched (Maintained)	2	SPST-NC	6 A @ 120 V AC, 3 A @ 240 V AC; 0.6 A @ 125 V DC	600V AC 600V DC	2-6	1/2	Yes	0000000	0000000

Cable-Pull Emergency Stop Switches with Restart Switch

Tug the cable to stop your line, then follow it back to the restart switch. Typically separate devices, the stop and reset controls are in one compact unit. As a secondary shutdown option, a push-button stop switch is also built in. A secondary push-button stop switch ensures you can halt equipment immediately, even when the cable is out of reach. Because they let you control circuits from a distance with a quick tug, these cable-pull stop switches are often used to turn off production lines and material handling systems. To notify your team on the floor that you’ve stopped equipment, a power indicator lights up when you pull the cable.

Use the tension indicator to confirm that cable is set up correctly. Circuits remain open until you tension the cable and hit the restart button. Cable is not included.

Two-direction switches support twice the total cable distance of one-direction switches. With pulls on each side, you can route cable in two opposite directions. These switches are often placed at the midpoint of conveyors and other long runs of equipment.

For technical drawings and 3-D models, click on a part number.

1 Direction Switches

Left Side Cable Location

Right Side Cable Location

											Mounting
Cable Location	For Max. Cable Lg., ft.	No. of Circuits Controlled	Switch Starting Position	No. of Terminals	Industry Designation	Switching Current @ Voltage	Max. Voltage	Actuation Force, lbs.	Conduit Trade Size	Bulb Voltage	Fasteners Included	No. of Holes	Hole Dia.		Each
With Screw Terminals
With Restart Button, Emergency Stop Button, Power Indicator and Tension Indicator (IP54, NEMA 1)
Left Side	325	2	2 Off (Normally Open) or 2 On (Normally Closed)	6	DPDT	6 A @ 120 V AC, 2.8 A @ 24 V DC	240V AC 24V DC	11	1/2	24V DC	No	4	1/4"	00000000	0000000
Left Side	325	2	2 Off (Normally Open) or 2 On (Normally Closed)	6	DPDT	6 A @ 120 V AC, 2.8 A @ 24 V DC	240V AC 24V DC	11	1/2	120V AC	No	4	1/4"	00000000	00000000
Right Side	325	2	2 Off (Normally Open) or 2 On (Normally Closed)	6	DPDT	6 A @ 120 V AC, 2.8 A @ 24 V DC	240V AC 24V DC	11	1/2	24V DC	No	4	1/4"	0000000	000000
Right Side	325	2	2 Off (Normally Open) or 2 On (Normally Closed)	6	DPDT	6 A @ 120 V AC, 2.8 A @ 24 V DC	240V AC 24V DC	11	1/2	120V AC	No	4	1/4"	00000000	00000000

2 Direction Switches

										Mounting
For Max. Cable Lg., ft.	No. of Circuits Controlled	Switch Starting Position	No. of Terminals	Industry Designation	Switching Current @ Voltage	Max. Voltage	Actuation Force, lbs.	Conduit Trade Size	Bulb Voltage	Fasteners Included	No. of Holes	Hole Dia.		Each
With Screw Terminals
With Restart Button, Emergency Stop Button, Power Indicator and Tension Indicator (IP54, NEMA 1)
325	2	2 Off (Normally Open) or 2 On (Normally Closed)	6	DPDT	6 A @ 120 V AC, 2.8 A @ 24 V DC	240V AC 24V DC	11	1/2	24V DC	No	4	1/4"	0000000	000000000
325	2	2 Off (Normally Open) or 2 On (Normally Closed)	6	DPDT	6 A @ 120 V AC, 2.8 A @ 24 V DC	240V AC 24V DC	11	1/2	120V AC	No	4	1/4"	00000000	00000000

Enclosed Motor Switches

These switches are housed in a plastic enclosure. Since they’re already protected, you can mount them to a wall if there’s no space left in your electrical panel. You can also turn them into a handheld control and move them around your workstation by attaching a cord and cord grip. The enclosure is PBT polyester, so it won’t swell in moist environments. Easy to operate even if you’re wearing gloves, flip the toggle switch up and down. Use these switches to turn motors on and off, or with lighting and electric heat circuits. They do not provide overload protection.

For technical drawings and 3-D models, click on a part number.

				Switching
No. of Circuits Controlled	Electrical Phase (hp)	Switch Starting Position	Industry Designation	Current, A	Voltage	Ht.	Wd.	Wire Connection Type	Environment	Environmental Rating	Specifications Met		Each
Stays Switched (Maintained)
2	Single (3 hp @ 240 V AC)	2 Off (Normally Open)	DPST-NO	30	600V AC	4.2"	2.8"	Screw Terminals	Indoor Only	NEMA 1	UL Listed, CSA Certified	0000000	000000
2	Single (5 hp @ 240 V AC)	2 Off (Normally Open)	DPST-NO	60	600V AC	4.5"	4.7"	Screw Terminals	Indoor Only	NEMA 1	UL Listed, CSA Certified	0000000	000000
3	Three (10 hp @ 240 V AC)	3 Off (Normally Open)	3PST-NO	60	600V AC	4.5"	4.7"	Screw Terminals	Indoor Only	NEMA 1	UL Listed, CSA Certified	0000000	000000
3	Three (7 1/2 hp @ 240 V AC)	3 Off (Normally Open)	3PST-NO	30	600V AC	4.2"	2.8"	Screw Terminals	Indoor Only	NEMA 1	UL Listed, CSA Certified	0000000	00000

Reversing Motor Switches

With Steel Enclosure

With Plastic Enclosure

Use these switches to control the on/off function of motors that run forward and backward, such as motors for conveyor belts. They can also be used with other circuits such as lighting and electric heat circuits, but do not provide overload protection. Also known as drum switches.

Switches that have maintained/momentary switch action are supplied to stay switched (maintained), but can be wired to spring back (momentary).

For technical drawings and 3-D models, click on a part number.

Stays Switched (Maintained)
Electrical Phase (hp)	Housing Material	Ht.	Wd.	Wire Connection Type	Environment	Environmental Rating	Specifications Met		Each
Single (1 1/2 hp @ 115 V AC)	Powder-Coated Steel	4.5"	2.4"	Screw Terminals	Indoor Only	NEMA 1	UL Listed, CSA Certified	0000000	000000
Single (1 1/2 hp @ 115 V AC) Three (1 hp @ 440 V AC) Three (2 hp @ 230 V AC)	Powder-Coated Steel	4.5"	2.4"	Screw Terminals	Indoor Only	NEMA 1	UL Listed, CSA Certified	0000000	000000
Single (1 1/2 hp @ 115 V AC) Three (2 hp @ 230 V AC) Three (2 hp @ 440 V AC)	Plastic	5.3"	2.5"	Screw Terminals	Indoor Only	NEMA 1	UL Listed, CSA Certified	0000000	000000
Single (2 hp @ 115 V AC) Three (5 hp @ 230 V AC) Three (7 1/2 hp @ 440 V AC)	Powder-Coated Steel	6.5"	3.5"	Screw Terminals	Indoor Only	NEMA 1	UL Listed, CSA Certified	0000000	000000
Springs Back (Momentary)
Single (1 1/2 hp @ 115 V AC) Three (1 hp @ 440 V AC) Three (2 hp @ 230 V AC)	Powder-Coated Steel	4.5"	2.4"	Screw Terminals	Indoor Only	NEMA 1	UL Listed, CSA Certified	0000000	000000
Stays Switched (Maintained)/Springs Back (Momentary)
Single (1 1/2 hp @ 115 V AC) Three (3 hp @ 230 V AC) Three (3 hp @ 440 V AC)	Powder-Coated Steel	4.75"	3.2"	Screw Terminals	Indoor Only	NEMA 1	UL Listed, CSA Certified	0000000	000000
Single (2 hp @ 115 V AC) Three (5 hp @ 230 V AC) Three (7 1/2 hp @ 440 V AC)	Powder-Coated Steel	4.75"	3.2"	Screw Terminals	Indoor Only	NEMA 1	UL Listed, CSA Certified	0000000	000000

Build-Your-Own Manual Motor Starters

Switch with
Power Indicating
Light and Steel Housing

Switch with Steel Housing

Assemble your own motor starter by combining a switch and a thermal overload element.

For technical drawings and 3-D models, click on a part number.

With Power-Indicating Light
No. of Circuits Controlled	Electrical Phase (hp)	Ht.	Wd.	Wire Connection Type	Environment	Environmental Rating		Each
Steel Housing
1	Single (1 hp @ 115 V AC) Single (1 hp @ 230 V AC)	4.3"	2.8"	Screw Terminals	Indoor Only	NEMA 1	0000000	0000000
2	Single (3/4 hp @ 115 V DC) Single (3/4 hp @ 230 V DC) Single (1 hp @ 115 V AC) Single (1 hp @ 230 V AC)	4.3"	2.8"	Screw Terminals	Indoor Only	NEMA 1	0000000	000000
Without Power-Indicating Light
Steel Housing
1	Single (1 hp @ 115 V AC) Single (1 hp @ 230 V AC)	4.3"	2.8"	Screw Terminals	Indoor Only	NEMA 1	0000000	000000
2	Single (3/4 hp @ 115 V DC) Single (3/4 hp @ 230 V DC) Single (1 hp @ 115 V AC) Single (1 hp @ 230 V AC)	4.3"	2.8"	Screw Terminals	Indoor Only	NEMA 1	0000000	000000

Enclosed Heavy Duty Motor Starters

Housed in a durable steel enclosure, these switches have sealed coils for protection against moisture, heat, dirt, and mechanical and thermal stress. They have a solid state overload relay that extends motor life in demanding applications and protects it from overloads—starters will shut the motor off if current exceeds the full-load current rating. The relay is adjustable; set it for the exact overload current needed. All have auxiliary contacts to send a signal or connect to another device, such as an alarm or indicating light. Also known as NEMA starters.

Note: The full-load current rating of your motor must fall within the starter’s overload current range. Match input voltage, also known as coil voltage, to your control circuit; motor voltage may be different. Look for the full-load current rating on the motor’s faceplate, or estimate the current rating (given the motor’s horsepower and voltage).

NEMA contact sizes 0 and 1 are universal mount and fit Cutler-Hammer, GE, and Square D installations.

For technical drawings and 3-D models, click on a part number.

Motor Starters									Replacement Coils
Overload Current, A	Input Voltage	Electrical Phase (hp)	Tripping Accuracy	Ht.	Wd.	Environmental Rating		Each		Each
Motor Starters with 1 Auxiliary Contact—1 Off (Normally Open)
NEMA Contact Size 0
0.25-1	24V AC	Three (1/6 hp @ 200 V AC) Three (1/6 hp @ 230 V AC) Three (1/3 hp @ 460 V AC) Three (1/2 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	0000000	00000000	0000000
0.25-1	110V AC/ 240V AC	Three (1/6 hp @ 200 V AC) Three (1/6 hp @ 230 V AC) Three (1/3 hp @ 460 V AC) Three (1/2 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
0.25-1	208V AC	Three (1/6 hp @ 200 V AC) Three (1/6 hp @ 230 V AC) Three (1/3 hp @ 460 V AC) Three (1/2 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
0.75-3.4	24V AC	Three (1/2 hp @ 200 V AC) Three (3/4 hp @ 230 V AC) Three (1 1/2 hp @ 460 V AC) Three (2 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
0.75-3.4	110V AC/ 240V AC	Three (1/2 hp @ 200 V AC) Three (3/4 hp @ 230 V AC) Three (1 1/2 hp @ 460 V AC) Three (2 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
0.75-3.4	208V AC	Three (1/2 hp @ 200 V AC) Three (3/4 hp @ 230 V AC) Three (1 1/2 hp @ 460 V AC) Three (2 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
0.75-3.4	220V AC/ 480V AC	Three (1/2 hp @ 200 V AC) Three (3/4 hp @ 230 V AC) Three (1 1/2 hp @ 460 V AC) Three (2 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
3-12	24V AC	Three (2 hp @ 200 V AC) Three (2 hp @ 230 V AC) Three (5 hp @ 460 V AC) Three (5 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
3-12	110V AC/ 240V AC	Three (2 hp @ 200 V AC) Three (2 hp @ 230 V AC) Three (5 hp @ 460 V AC) Three (5 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
3-12	208V AC	Three (2 hp @ 200 V AC) Three (2 hp @ 230 V AC) Three (5 hp @ 460 V AC) Three (5 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
3-12	220V AC/ 480V AC	Three (2 hp @ 200 V AC) Three (2 hp @ 230 V AC) Three (5 hp @ 460 V AC) Three (5 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
5.5-22	24V AC	Three (3 hp @ 200 V AC) Three (3 hp @ 230 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
5.5-22	110V AC/ 240V AC	Three (3 hp @ 200 V AC) Three (3 hp @ 230 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
5.5-22	208V AC	Three (3 hp @ 200 V AC) Three (3 hp @ 230 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
5.5-22	220V AC/ 480V AC	Three (3 hp @ 200 V AC) Three (3 hp @ 230 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
NEMA Contact Size 1
3-12	24V AC	Three (2 hp @ 200 V AC) Three (2 hp @ 230 V AC) Three (5 hp @ 460 V AC) Three (5 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
3-12	110V AC/ 240V AC	Three (2 hp @ 200 V AC) Three (2 hp @ 230 V AC) Three (5 hp @ 460 V AC) Three (5 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
3-12	208V AC	Three (2 hp @ 200 V AC) Three (2 hp @ 230 V AC) Three (5 hp @ 460 V AC) Three (5 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
3-12	220V AC/ 480V AC	Three (2 hp @ 200 V AC) Three (2 hp @ 230 V AC) Three (5 hp @ 460 V AC) Three (5 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
5.5-22	24V AC	Three (3 hp @ 200 V AC) Three (3 hp @ 230 V AC) Three (10 hp @ 460 V AC) Three (10 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
5.5-22	110V AC/ 240V AC	Three (3 hp @ 200 V AC) Three (3 hp @ 230 V AC) Three (10 hp @ 460 V AC) Three (10 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
5.5-22	208V AC	Three (3 hp @ 200 V AC) Three (3 hp @ 230 V AC) Three (10 hp @ 460 V AC) Three (10 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
5.5-22	220V AC/ 480V AC	Three (3 hp @ 200 V AC) Three (3 hp @ 230 V AC) Three (10 hp @ 460 V AC) Three (10 hp @ 575 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
10-40	24V AC	Three (7 1/2 hp @ 200 V AC) Three (7 1/2 hp @ 230 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
10-40	110V AC/ 240V AC	Three (7 1/2 hp @ 200 V AC) Three (7 1/2 hp @ 230 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
10-40	208V AC	Three (7 1/2 hp @ 200 V AC) Three (7 1/2 hp @ 230 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
10-40	220V AC/ 480V AC	Three (7 1/2 hp @ 200 V AC) Three (7 1/2 hp @ 230 V AC)	±1%	11"	6.4"	NEMA 1	00000000	000000	00000000	000000
NEMA Contact Size 2
13-52	24V AC	Three (10 hp @ 240 V AC) Three (15 hp @ 230 V AC) Three (25 hp @ 460 V AC) Three (25 hp @ 575 V AC)	±1%	13.5"	8"	NEMA 1	00000000	00000000	00000000	000000
13-52	110V AC/ 240V AC	Three (10 hp @ 240 V AC) Three (15 hp @ 230 V AC) Three (25 hp @ 460 V AC) Three (25 hp @ 575 V AC)	±1%	13.5"	8"	NEMA 1	00000000	00000000	00000000	000000
13-52	208V AC	Three (10 hp @ 240 V AC) Three (15 hp @ 230 V AC) Three (25 hp @ 460 V AC) Three (25 hp @ 575 V AC)	±1%	13.5"	8"	NEMA 1	00000000	00000000	00000000	000000
13-52	220V AC/ 480V AC	Three (10 hp @ 240 V AC) Three (15 hp @ 230 V AC) Three (25 hp @ 460 V AC) Three (25 hp @ 575 V AC)	±1%	13.5"	8"	NEMA 1	00000000	00000000	00000000	000000

Enclosed Heavy Duty Build-Your-Own Manual Motor Starters

Combine a switch with a thermal overload element to build a starter that can handle high-current-rated motors. All are housed in a durable steel enclosure. They’re also known as NEMA starters.

Thermal overload elements shut motors off if current exceeds the full-load current rating. Three elements are required. To Order: Please specify the full-load current rating of your motor. If the full-load current rating is not shown on the motor’s faceplate, estimate the current rating (given the motor’s horsepower and voltage).

For technical drawings and 3-D models, click on a part number.

Switch with NEMA 1 Enclosure

NEMA 1 Motor Starters
NEMA Contact Size	Electrical Phase (hp)	Housing Material	Ht.	Wd.	Dp.	Wire Connection Type	Environmental Rating	Specifications Met		Each
M0	Three (2 hp @ 115 V AC) Three (3 hp @ 230 V AC) Three (5 hp @ 460 V AC)	Painted Steel	7.6"	4.7"	5"	Screw Terminals	NEMA 1	UL Listed, CSA Certified	0000000	0000000
M1	Three (3 hp @ 115 V AC) Three (7 1/2 hp @ 230 V AC) Three (10 hp @ 460 V AC)	Painted Steel	7.6"	4.7"	5"	Screw Terminals	NEMA 1	UL Listed, CSA Certified	0000000	00000000

Thermal Overload Elements

		Each
	000000	000000

Manual Transfer Switches

NEMA 1

NEMA 1 with NEMA 3R Power Inlet Box

If there’s a power outage, flip the toggle for each circuit on these switches to backup power. Each circuit can also be turned off completely. To prevent injury and damage to your generators, they are open transition, meaning the contacts disconnect from one power source before connecting to another. This is also known as break-before-make switching.

Use them with a portable generator.

NEMA 1 switches should be used indoors. Those with a power inlet box create a connection point between the switch and a portable generator. The inlet box is rated NEMA 3R, so it can be mounted on the outside of an exterior wall.

					Housing
Max. Power	Switching Current (No. of Switches)	Circuit Breaker Breakthrough Current	Electrical Phase	Housing Material	Ht.	Wd.	Dp.	Generator Connection Style	Power Cord Lg., ft.	Specifications Met		Each
NEMA 1
6 Circuits Total
7,500W	30 A @ 240 V AC (1 DPDT) 20 A @ 240 V AC (1 DPDT) 15 A @ 120 V AC (2 SPDT)	10,000A	Single	Powder-Coated Steel	11 1/4"	7 3/4"	4 3/4"	NEMA L14-30	__	UL Listed, UL 1008, NEC Article 702	0000000	0000000
12,500W	30 A @ 240 V AC (1 DPDT) 20 A @ 240 V AC (1 DPDT) 15 A @ 120 V AC (2 SPDT)	10,000A	Single	Powder-Coated Steel	11 1/4"	7 3/4"	4 3/4"	CS6375	__	UL Listed, UL 1008, NEC Article 702	0000000	000000
10 Circuits Total
7,500W	30 A @ 240 V AC (1 DPDT) 20 A @ 240 V AC (1 DPDT) 15 A @ 120 V AC (6 SPDT)	10,000A	Single	Powder-Coated Steel	11 1/4"	11 3/4"	4 3/4"	NEMA L14-30	__	UL Listed, UL 1008, NEC Article 702	0000000	000000
12,500W	30 A @ 240 V AC (1 DPDT) 20 A @ 240 V AC (1 DPDT) 15 A @ 120 V AC (6 SPDT)	10,000A	Single	Powder-Coated Steel	11 1/4"	11 3/4"	4 3/4"	CS6375	__	UL Listed, UL 1008, NEC Article 702	0000000	000000
NEMA 1 with NEMA 3R Power Inlet Box
6 Circuits Total
7,500W	20 A @ 240 V AC (1 DPDT) 15 A @ 120 V AC (4 SPDT)	10,000A	Single	Powder-Coated Steel	12"	8 3/4"	6"	NEMA L14-30	10	UL Listed, UL 1008, NEC Article 702	0000000	000000
10 Circuits Total
7,500W	20 A @ 240 V AC (1 DPDT) 20 A @ 120 VAC (2 SPDT) 15 A @ 120 V AC (6 SPDT)	10,000A	Single	Powder-Coated Steel	11 1/4"	11 3/4"	4 3/4"	NEMA L14-30	10	UL Listed, UL 1008, NEC Article 702	0000000	000000

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About Motor Switches and Starters

Choosing an Electrical Switch

Cable-Pull Switches

Cable-Pull Emergency Stop Switches with Restart Switch

Enclosed Motor Switches

Reversing Motor Switches

Build-Your-Own Manual Motor Starters

Enclosed Heavy Duty Motor Starters

Enclosed Heavy Duty Build-Your-Own Manual Motor Starters

Manual Transfer Switches