Disconnect Shafts | McMaster-Carr

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69 Products

About Motor Switches and Starters

Choosing an Electrical Switch

Enclosure Disconnect Switches

Install these switches inside an enclosure to prevent it from opening when power is on—turn the switch to disconnect power and release the door. Cut the shaft to fit the enclosure. Use a padlock (not included) to lock switches in the off position. Mount to DIN rail inside an enclosure; mounting depth is the distance from the panel door to the DIN rail. All meet at least one safety standard.

Add auxiliary contact blocks to send a signal or connect to another device, such as an alarm or indicating light.

Use optional sealing gaskets in washdown environments; they create an IP65 rated seal around the actuator.

Use additional power poles to control more than three circuits. Add neutral poles to open and close the neutral leg of a three-phase system.

Add junction blocks to connect a ground wire.

Terminal covers prevent contact with live terminals.

Switches with Lockout Only

3 Circuits

4 Circuits

Switches
Switching										Replacement Shafts		Replacement Shaft Bases
Current, A	Voltage	Electrical Phase (hp)	Ht.	Wd.	For DIN Rail Ht., mm	Mounting Dp.	Environmental Rating		Each		Each		Each
Gray Plastic Housing with Gray Actuator
3 Circuits—For 1 3/16" Panel Cutout Dia.
25	600V AC	Single (3/4 hp @ 120 V AC) Single (1 1/2 hp @ 240 V AC) Three (1 1/2 hp @ 120 V AC) Three (3 hp @ 240 V AC)	2 5/8"	2 5/8"	35	4 7/8"-15 3/4"	IP40	0000000	000000	0000000	000000	0000000	00000
32	600V AC	Single (1 hp @ 120 V AC) Single (2 hp @ 240 V AC) Three (2 hp @ 120 V AC) Three (5 hp @ 240 V AC)	2 5/8"	2 5/8"	35	4 7/8"-15 3/4"	IP40	0000000	00000	0000000	00000	0000000	0000
50	600V AC	Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (3 hp @ 120 V AC) Three (7 1/2 hp @ 240 V AC)	2 5/8"	2 5/8"	35	5 5/16"-16 1/8"	IP40	0000000	00000	0000000	00000	0000000	0000
63	600V AC	Single (3 hp @ 120 V AC) Single (5 hp @ 240 V AC) Three (5 hp @ 120 V AC) Three (10 hp @ 240 V AC)	2 5/8"	2 5/8"	35	5 5/16"-16 1/8"	IP40	0000000	000000	0000000	00000	0000000	0000
80	600V AC	Single (3 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (7 1/2 hp @ 120 V AC) Three (20 hp @ 240 V AC)	3 3/8"	3 3/8"	35	5 11/16"-16 1/2"	IP40	0000000	000000	0000000	00000	0000000	0000
100	600V AC	Single (5 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (10 hp @ 120 V AC) Three (25 hp @ 240 V AC)	3 3/8"	3 3/8"	35	5 11/16"-16 1/2"	IP40	0000000	000000	0000000	00000	0000000	0000
Yellow Plastic Housing with Red Actuator
3 Circuits—For 1 3/16" Panel Cutout Dia.
25	600V AC	Single (3/4 hp @ 120 V AC) Single (1 1/2 hp @ 240 V AC) Three (1 1/2 hp @ 120 V AC) Three (3 hp @ 240 V AC)	2 5/8"	2 5/8"	35	4 7/8"-15 3/4"	IP40	0000000	00000	0000000	00000	0000000	0000
32	600V AC	Single (1 hp @ 120 V AC) Single (2 hp @ 240 V AC) Three (2 hp @ 120 V AC) Three (5 hp @ 240 V AC)	2 5/8"	2 5/8"	35	4 7/8"-15 3/4"	IP40	0000000	00000	0000000	00000	0000000	0000
50	600V AC	Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (3 hp @ 120 V AC) Three (7 1/2 hp @ 240 V AC)	2 5/8"	2 5/8"	35	5 5/16"-16 1/8"	IP40	0000000	00000	0000000	00000	0000000	0000
63	600V AC	Single (3 hp @ 120 V AC) Single (5 hp @ 240 V AC) Three (5 hp @ 120 V AC) Three (10 hp @ 240 V AC)	2 5/8"	2 5/8"	35	5 5/16"-16 1/8"	IP40	0000000	000000	0000000	00000	0000000	0000
80	600V AC	Single (3 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (7 1/2 hp @ 120 V AC) Three (20 hp @ 240 V AC)	3 3/8"	3 3/8"	35	5 11/16"-16 1/2"	IP40	0000000	000000	0000000	00000	0000000	0000
100	600V AC	Single (5 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (10 hp @ 120 V AC) Three (25 hp @ 240 V AC)	3 3/8"	3 3/8"	35	5 11/16"-16 1/2"	IP40	0000000	000000	0000000	00000	0000000	0000
4 Circuits—For 1 3/16" Panel Cutout Dia.
25	600V AC	Single (3/4 hp @ 120 V AC) Single (1 1/2 hp @ 240 V AC) Three (1 1/2 hp @ 120 V AC) Three (3 hp @ 240 V AC)	2 5/8"	2 5/8"	35	4 7/8"-15 3/4"	IP40	0000000	00000	0000000	00000	0000000	0000
32	600V AC	Single (1 hp @ 120 V AC) Single (2 hp @ 240 V AC) Three (2 hp @ 120 V AC) Three (5 hp @ 240 V AC)	2 5/8"	2 5/8"	35	4 7/8"-15 3/4"	IP40	0000000	000000	0000000	00000	0000000	0000
50	600V AC	Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (3 hp @ 120 V AC) Three (7 1/2 hp @ 240 V AC)	2 5/8"	2 5/8"	35	5 5/16"-16 1/8"	IP40	0000000	000000	0000000	00000	0000000	0000
63	600V AC	Single (3 hp @ 120 V AC) Single (5 hp @ 240 V AC) Three (5 hp @ 120 V AC) Three (10 hp @ 240 V AC)	2 5/8"	2 5/8"	35	5 5/16"-16 1/8"	IP40	0000000	000000	0000000	00000	0000000	0000
80	600V AC	Single (3 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (7 1/2 hp @ 120 V AC) Three (20 hp @ 240 V AC)	3 3/8"	3 3/8"	35	5 11/16"-16 1/2"	IP40	0000000	000000	0000000	00000	0000000	0000
100	600V AC	Single (5 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (10 hp @ 120 V AC) Three (25 hp @ 240 V AC)	3 3/8"	3 3/8"	35	5 11/16"-16 1/2"	IP40	0000000	000000	0000000	00000	0000000	0000

Replacement Actuators for Switches with Lockout Only

				Gray Plastic Housing with Gray Actuator		Yellow Plastic Housing with Red Actuator
For Switching Current	Ht.	Wd.	Dp.		Each		Each
25A, 32A, 50A, 63A	2 9/16"	2 9/16"	1 5/16"	0000000	000000	0000000	000000
80A, 100A	3 3/8"	3 3/8"	1 5/16"	0000000	00000	0000000	00000

Auxiliary Contact Blocks for Switches with Lockout Only

No. of Circuits Controlled	Switching Current @ Voltage	Switch Starting Position	Industry Designation		Each
1	10 A @ 600 V AC	1 Off (Normally Open) or 1 On (Normally Closed)	SPDT	0000000	000000

Sealing Gaskets for Switches with Lockout Only

For Switching Current, A		Each
25A, 32A, 50A, 63A	0000000	00000
80A, 100A	0000000	0000

Additional Power Poles for Switches with Lockout Only

Switching Current, A	Specifications Met		Each
25	UL Listed, CE Marked	00000000	000000
32	UL Listed, CE Marked	00000000	00000
50	UL Listed, CE Marked	00000000	00000
63	UL Listed, CE Marked	00000000	00000
80	UL Listed, CE Marked	00000000	00000
100	UL Listed, CE Marked	00000000	00000

Neutral Poles for Switches with Lockout Only

Switching Current, A	Specifications Met		Each
25	UL Listed, CE Marked	00000000	000000
32	UL Listed, CE Marked	00000000	00000
50	UL Listed, CE Marked	00000000	00000
63	UL Listed, CE Marked	00000000	00000
80	UL Listed, CE Marked	00000000	00000
100	UL Listed, CE Marked	00000000	00000

Junction Blocks for Switches with Lockout Only

For Current, A	Specifications Met		Each
25/32	UL Listed, CE Marked	00000000	000000
50/63	UL Listed, CE Marked	00000000	00000
80/100	UL Listed, CE Marked	00000000	00000

Terminal Covers for Switches with Lockout Only

For Use With		Each
Auxiliary Contact Block	0000000	00000
25/32A Switch Contact Block	0000000	0000
25/32A Power Pole, Neutral Pole, or Junction Block	0000000	0000
50/63A Switch Contact Block	0000000	0000
50/63A Power Pole, Neutral Pole, or Junction Block	0000000	0000
80/100A Switch Contact Block	0000000	0000

Manual Override Enclosure Disconnect Switches

Keep power running while you access your enclosure. Unlike standard enclosure disconnect switches, which shut off power as you open your enclosure, these have an override function. Engaging the override allows you to take voltage reading, troubleshoot an error code, or fine tune the speed of your line. When the override is off, these work like a standard disconnect switch—a safety interlock prevents your enclosure from opening when power is on. The interlock also prevents the switch from turning on when the door is already open. Cut the shaft to fit your enclosure. All have a lockout so you can secure them in the off position with a padlock (not included).

Add auxiliary contact blocks to send a signal or connect to another device, such as an alarm or indicating light.

Use additional power poles to control more than three circuits. Add neutral poles to open and close the neutral leg of a three-phase system.

Add junction blocks to connect a ground wire.

Terminal covers prevent contact with live terminals.

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

Switches

Switching
Current, A	Voltage	Electrical Phase (hp)	Ht.	Wd.	For DIN Rail Ht., mm	Mounting Dp.	Environmental Rating		Each
Black Plastic Housing with Black Actuator
3 Circuits with Lockout, Safety Interlock—For 1 1/2" Panel Cutout Dia.
25	600V AC	Single (3/4 hp @ 120 V AC) Single (1 1/2 hp @ 240 V AC) Three (1 1/2 hp @ 120 V AC) Three (3 hp @ 240 V AC)	3"	4 1/16"	35	4 7/8"-15 3/4"	IP66, NEMA 4X, NEMA 12	0000000	0000000
32	600V AC	Single (1 hp @ 120 V AC) Single (2 hp @ 240 V AC) Three (2 hp @ 120 V AC) Three (5 hp @ 240 V AC)	3"	4 1/16"	35	4 7/8"-15 3/4"	IP66, NEMA 4X, NEMA 12	0000000	000000
50	600V AC	Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (3 hp @ 120 V AC) Three (7 1/2 hp @ 240 V AC)	3"	4 1/16"	35	5 5/16"-16 1/8"	IP66, NEMA 4X, NEMA 12	0000000	000000
63	600V AC	Single (3 hp @ 120 V AC) Single (5 hp @ 240 V AC) Three (5 hp @ 120 V AC) Three (10 hp @ 240 V AC)	3"	4 1/16"	35	5 5/16"-16 1/8"	IP66, NEMA 4X, NEMA 12	0000000	000000
80	600V AC	Single (3 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (7 1/2 hp @ 120 V AC) Three (20 hp @ 240 V AC)	3"	4 1/16"	35	5 11/16"-16 1/2"	IP66, NEMA 4X, NEMA 12	0000000	000000
100	600V AC	Single (5 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (10 hp @ 120 V AC) Three (25 hp @ 240 V AC)	3"	4 1/16"	35	5 11/16"-16 1/2"	IP66, NEMA 4X, NEMA 12	0000000	000000
Black Plastic Housing with Red Actuator
3 Circuits with Lockout, Safety Interlock—For 1 1/2" Panel Cutout Dia.
25	600V AC	Single (3/4 hp @ 120 V AC) Single (1 1/2 hp @ 240 V AC) Three (1 1/2 hp @ 120 V AC) Three (3 hp @ 240 V AC)	3"	4 1/16"	35	4 7/8"-15 3/4"	IP66, NEMA 4X, NEMA 12	0000000	000000
32	600V AC	Single (1 hp @ 120 V AC) Single (2 hp @ 240 V AC) Three (2 hp @ 120 V AC) Three (5 hp @ 240 V AC)	3"	4 1/16"	35	4 7/8"-15 3/4"	IP66, NEMA 4X, NEMA 12	0000000	000000
50	600V AC	Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (3 hp @ 120 V AC) Three (7 1/2 hp @ 240 V AC)	3"	4 1/16"	35	5 5/16"-16 1/8"	IP66, NEMA 4X, NEMA 12	0000000	000000
63	600V AC	Single (3 hp @ 120 V AC) Single (5 hp @ 240 V AC) Three (5 hp @ 120 V AC) Three (10 hp @ 240 V AC)	3"	4 1/16"	35	5 5/16"-16 1/8"	IP66, NEMA 4X, NEMA 12	0000000	000000
80	600V AC	Single (3 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (7 1/2 hp @ 120 V AC) Three (20 hp @ 240 V AC)	3"	4 1/16"	35	5 11/16"-16 1/2"	IP66, NEMA 4X, NEMA 12	0000000	000000
100	600V AC	Single (5 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (10 hp @ 120 V AC) Three (25 hp @ 240 V AC)	3"	4 1/16"	35	5 11/16"-16 1/2"	IP66, NEMA 4X, NEMA 12	0000000	000000

Replacement Actuators

			Black Plastic Housing with Black Actuator		Black Plastic Housing with Red Actuator
For Switching Current	Ht.	Wd.		Each		Each
25A, 32A, 50A, 63A, 80A, 100A	3"	4 1/16"	0000000	000000	0000000	000000

Auxiliary Contact Blocks

	Switching
No. of Circuits Controlled	Current, A	Voltage	Switch Starting Position	Industry Designation		Each
1	10	600V AC	1 Off (Normally Open) or 1 On (Normally Closed)	SPDT	0000000	000000

Additional Power Poles

Switching Current, A	Specifications Met		Each
25	UL Listed, CE Marked	00000000	000000
32	UL Listed, CE Marked	00000000	00000
50	UL Listed, CE Marked	00000000	00000
63	UL Listed, CE Marked	00000000	00000
80	UL Listed, CE Marked	00000000	00000
100	UL Listed, CE Marked	00000000	00000

Neutral Poles

Switching Current, A	Specifications Met		Each
25	UL Listed, CE Marked	00000000	000000
32	UL Listed, CE Marked	00000000	00000
50	UL Listed, CE Marked	00000000	00000
63	UL Listed, CE Marked	00000000	00000
80	UL Listed, CE Marked	00000000	00000
100	UL Listed, CE Marked	00000000	00000

Junction Blocks

For Current, A	Specifications Met		Each
25/32	UL Listed, CE Marked	00000000	000000
50/63	UL Listed, CE Marked	00000000	00000
80/100	UL Listed, CE Marked	00000000	00000

Terminal Covers

For Use With		Each
Auxiliary Contact Block	0000000	00000
25/32A Switch Contact Block	0000000	0000
25/32A Power Pole, Neutral Pole, or Junction Block	0000000	0000
50/63A Switch Contact Block	0000000	0000
50/63A Power Pole, Neutral Pole, or Junction Block	0000000	0000
80/100A Switch Contact Block	0000000	0000

Enclosure Motor Switches

Designed to mount on an electrical enclosure, these switches control motors, lighting, and electric heat circuits. Your enclosure door will only open when the switch is turned to the off position. This ensures equipment is safely off before you open the electrical enclosure. For an extra layer of safety, use a padlock (not included) on the actuator lever to lock switches in the off position. These switches do not provide overload protection.

Cut the shaft to fit your enclosure. Mount to a DIN rail inside an enclosure; mounting depth is the distance from the panel door to the DIN rail.

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

Switching
Current, A	Voltage	No. of Circuits Controlled	Electrical Phase (hp)	Switch Starting Position	Industry Designation	Ht.	Wd.	For DIN Rail Ht., mm	Mounting Dp.	Wire Connection Type	Environmental Rating		Each
Stays Switched (Maintained)
25	600V AC	3	Single (2 hp @ 240 V AC) Single (5 hp @ 480 V AC) Three (5 hp @ 240 V AC) Three (10 hp @ 480 V AC)	3 Off (Normally Open)	3PST-NO	2.4"	2.4"	35	7 7/8"-14 5/8"	Screw Terminals	IP65	0000000	0000000
32	600V AC	3	Single (2 hp @ 240 V AC) Single (5 hp @ 480 V AC) Three (5 hp @ 240 V AC) Three (10 hp @ 480 V AC)	3 Off (Normally Open)	3PST-NO	2.4"	2.4"	35	7 7/8"-14 5/8"	Screw Terminals	IP65	0000000	000000
40	600V AC	3	Single (3 hp @ 240 V AC) Single (5 hp @ 480 V AC) Three (5 hp @ 240 V AC) Three (10 hp @ 480 V AC)	3 Off (Normally Open)	3PST-NO	2.4"	2.4"	35	7 7/8"-14 5/8"	Screw Terminals	IP65	0000000	000000
63	600V AC	3	Three (10 hp @ 240 V AC) Three (20 hp @ 480 V AC)	3 Off (Normally Open)	3PST-NO	2.4"	2.4"	35	8 1/16"-15 9/16"	Screw Terminals	IP65	0000000	000000
80	600V AC	3	Three (15 hp @ 240 V AC) Three (30 hp @ 480 V AC)	3 Off (Normally Open)	3PST-NO	2.4"	2.4"	35	8 1/16"-15 9/16"	Screw Terminals	IP65	0000000	000000
125	600V AC	3	Three (25 hp @ 240 V AC) Three (50 hp @ 480 V AC)	3 Off (Normally Open)	3PST-NO	3.5"	3.5"	35	9 1/16"-16 9/16"	Screw Terminals	IP65	0000000	000000
175	600V AC	3	Three (30 hp @ 240 V AC) Three (50 hp @ 480 V AC)	3 Off (Normally Open)	3PST-NO	3.5"	3.5"	35	9 1/16"-16 9/16"	Screw Terminals	IP65	0000000	000000