System of Measurement System of Measurement |
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Switching Current Switching Current | Show |
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Switching Current Switching Current | Hide |
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Power Power |
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Switch Action Switch Action |
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Switch Type Switch Type |
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Wire Connection Type Wire Connection Type |
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Housing Material Housing Material |
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Specifications Met Specifications Met |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Choosing an Electrical Switch
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About Relays
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About Motor Switches and Starters
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Enclosed Motor Switches
These switches are housed in a protective enclosure. Use them 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 (5 hp @ 240 V AC) | 2 Off (Normally Open) | DPST-NO | 60 | 600V AC | 4.5" | 4.7" | Screw Terminals | Indoor | NEMA 1 | UL Listed, CSA Certified | 0000000 | 0000000 |
| 3 | Three (10 hp @ 240 V AC) | 3 Off (Normally Open) | 3PST-NO | 60 | 600V AC | 4.5" | 4.7" | Screw Terminals | Indoor | NEMA 1 | UL Listed, CSA Certified | 0000000 | 000000 |
Motor Switches
Use these switches to turn motors on and off, or to control 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 | Specifications Met | Each | |
Stays Switched (Maintained) | |||||||||||
| 2 | Single (5 hp @ 240 V AC) | 2 Off (Normally Open) | DPST-NO | 60 | 600V AC | 3.8" | 1.7" | Screw Terminals | UL Listed, CSA Certified | 0000000 | 0000000 |
| 3 | Three (10 hp @ 240 V AC) | 3 Off (Normally Open) | 3PST-NO | 60 | 600V AC | 3.8" | 1.7" | Screw Terminals | UL Listed, CSA Certified | 0000000 | 000000 |
Washdown Enclosed Disconnect Switches
Rated IP66, these switches are protected from washdowns. They cut power and keep it isolated to prevent equipment from starting up during inspection and maintenance.
Switches with lockout secure in the off position with a padlock with a maximum shackle diameter of 5/16” (not included).
Add auxiliary contact blocks to send a signal or connect to another device, such as an alarm or indicating light.
For technical drawings and 3-D models, click on a part number.
Switching | ||||||||
|---|---|---|---|---|---|---|---|---|
| Current, A | Voltage | Switch Action | Industry Designation | Electrical Phase (hp) | Ht. | Wd. | Each | |
Stainless Steel Housing with Red Actuator | ||||||||
3 Circuits with Lockout | ||||||||
| 60 | 600V AC | Stays Switched (Maintained) | 3PST | Single (3 hp @ 120 V AC) Single (7 1/2 hp @ 240 V AC) Three (15 hp @ 240 V AC) | 7 7/8" | 5 15/16" | 0000000 | 0000000 |
| "Main Switch" Label with Adhesive Back—13/16" Ht. × 3 3/16" Wd. | 0000000 | Each | 00000 |
| Switching Current, A | Specifications Met | Each | |
| 60 | UL Listed, C-UL Listed, CE Marked | 00000000 | 000000 |
Harsh Environment Panel-Mount Disconnect Switches
Rated IP69K, these switches withstand high-pressure, high-temperature washdowns. They cut power and keep it isolated to prevent equipment from starting up during inspection and maintenance. All have a lockout so you can secure them in the off position with a padlock (not included).
For technical drawings and 3-D models, click on a part number.
Switching | ||||||||
|---|---|---|---|---|---|---|---|---|
| Current, A | Voltage | Industry Designation | Electrical Phase (hp) | Ht. | Wd. | Dp. Behind Panel | Each | |
Yellow Stainless Steel Housing with Red Actuator | ||||||||
Stays Switched (Maintained) | ||||||||
3 Circuits with Lockout—For 7/8" Panel Cutout Dia. | ||||||||
| 60 | 600V AC | 3PST | Single (3 hp @ 120 V AC) Single (7 1/2 hp @ 240 V AC) Three (15 hp @ 240 V AC) | 4 5/16" | 4 5/16" | 3 3/8" | 00000000 | 0000000 |
Gray Stainless Steel Housing with Gray Actuator | ||||||||
Stays Switched (Maintained) | ||||||||
3 Circuits with Lockout—For 7/8" Panel Cutout Dia. | ||||||||
| 60 | 600V AC | 3PST | Single (3 hp @ 120 V AC) Single (7 1/2 hp @ 240 V AC) Three (15 hp @ 240 V AC) | 4 5/16" | 4 5/16" | 3 3/8" | 00000000 | 000000 |
| "Main Switch" Label with Adhesive Back—13/16" Ht. × 3 3/16" Wd. | 0000000 | Each | 00000 |
Durable Disconnect Switches
Protected by a steel enclosure, these switches withstand tougher conditions than switches in a plastic housing. Also known as safety switches, they have quick-make/quick-break action to eliminate arcing and prolong switch life. A safety interlock keeps the door closed when the switch is on, and prevents the switch from turning on when the door is open. They have a lockout to secure in the off position using a padlock (not included).
Use switches with a fuse holder where overload protection is needed. When used with UL Class RK1, RK5, or T fuses, they require rejection-style fuse clips. Note: Horsepower ratings are based on time-delay fuses installed.
For technical drawings and 3-D models, click on a part number.
Switches | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Switching | Rejection-Style Fuse Clips for RK1 and RK5 Fuse Class | |||||||||||||
| Current, A | Voltage | Switch Action | Industry Designation | Electrical Phase (hp) | For No. of Wires | For Fuse Class | Ht. | Wd. | Environmental Rating | Specifications Met | Each | Each | ||
Enamel-Coated Steel with Black Actuator | ||||||||||||||
3 Circuits with Lockout, Safety Interlock | ||||||||||||||
| 60 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PDT | Single (10 hp @ 240 V AC) Single (25 hp @ 480 V AC) Single (30 hp @ 600 V AC) | 3 | __ | 29 15/16" | 12" | NEMA 1 | UL Listed | 000000 | 0000000 | 000000 | 00 |
3 Circuits with Lockout, Safety Interlock, Fuse Holder | ||||||||||||||
| 60 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PDT | Single (5 hp @ 480 V AC) Three (15 hp @ 480 V AC) Three (15 hp @ 600 V AC) | 3 | RK1, RK5, J, K5, H | 38 7/16" | 12" | NEMA 1 | UL Listed | 000000 | 00000000 | 000000 | 00 |
Enamel-Coated Steel with Black/Red Actuator | ||||||||||||||
3 Circuits with Lockout, Safety Interlock | ||||||||||||||
| 60 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PST | Single (30 hp @ 600 V AC) Three (60 hp @ 600 V AC) | 3 | __ | 17 1/2" | 10 1/2" | NEMA 1 | UL Listed, Fed. Spec. WS-865C | 0000000 | 000000 | 000000 | 00 |
3 Circuits with Lockout, Safety Interlock, Fuse Holder | ||||||||||||||
| 60 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PST | Three (50 hp @ 600 V AC) | 3 | RK1, RK5, J, H | 17 1/2" | 10 1/2" | NEMA 1 | UL Listed, Fed. Spec. WS-865C | 0000000 | 000000 | 00000000 | 000000 |
| 60 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PST | Three (50 hp @ 600 V AC) | 4 | RK1, RK5, J, H | 17 1/2" | 10 1/2" | NEMA 1 | UL Listed, Fed. Spec. WS-865C | 0000000 | 000000 | 00000000 | 00000 |
Powder-Coated Steel with Red Actuator | ||||||||||||||
2 Circuits with Lockout, Safety Interlock, Fuse Holder | ||||||||||||||
| 60 | 240V AC/ 250V DC | Stays Switched (Maintained) | DPST | Single (10 hp @ 240 V AC) | 3 | RK1, RK5, K5, H | 10 1/16" | 6 7/16" | NEMA 1 | UL Listed | 0000000 | 00000 | 00000000 | 00000 |
3 Circuits with Lockout, Safety Interlock | ||||||||||||||
| 60 | 240V AC/ 250V DC | Stays Switched (Maintained) | 3PST | Three (15 hp @ 240 V AC) | 3 | __ | 8 9/16" | 5 7/16" | NEMA 1 | UL Listed | 0000000 | 00000 | 000000 | 00 |
3 Circuits with Lockout, Safety Interlock, Fuse Holder | ||||||||||||||
| 60 | 240V AC/ 250V DC | Stays Switched (Maintained) | 3PST | Single (10 hp @ 240 V AC) Three (15 hp @ 240 V AC) | 4 | RK1, RK5, K5, H | 10 1/16" | 6 7/16" | NEMA 1 | UL Listed | 0000000 | 00000 | 00000000 | 00000 |
Outdoor Durable Disconnect Switches
A raintight NEMA 3R rated enclosure protects these switches from falling liquids and light splashing. The enclosure is steel, so it withstands tougher conditions than plastic enclosures. All have quick-make/quick-break action to eliminate arcing and prolong switch life. They have a lockout to secure in the off position using a padlock (not included).
Use switches with a fuse holder where overload protection is needed. When used with UL Class RK1, RK5, or T fuses, they require rejection-style fuse clips. Note: Horsepower ratings are based on time-delay fuses installed.
Switches with safety interlock keep the door closed when the switch is on, and prevent the switch from turning on when the door is open.
For technical drawings and 3-D models, click on a part number.
Switches | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Switching | Rejection-Style Fuse Clips for RK1 and RK5 Fuse Class | |||||||||||
| Current, A | Voltage | Switch Action | Industry Designation | Electrical Phase (hp) | For No. of Wires | For Fuse Class | Ht. | Wd. | Each | Each | ||
Gray Enamel-Coated Steel with Black/Red Actuator | ||||||||||||
3 Circuits with Lockout, Safety Interlock | ||||||||||||
| 60 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PST | Single (30 hp @ 240 V AC) Three (60 hp @ 600 V AC) | 3 | __ | 17 1/2" | 10 1/2" | 0000000 | 0000000 | 000000 | 00 |
3 Circuits with Lockout, Safety Interlock, Fuse Holder | ||||||||||||
| 60 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PST | Three (50 hp @ 600 V AC) | 3 | RK1, RK5, J, H | 17 1/2" | 10 1/2" | 0000000 | 000000 | 00000000 | 000000 |
| 60 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PST | Three (50 hp @ 600 V AC) | 4 | RK1, RK5, J, H | 17 1/2" | 10 1/2" | 0000000 | 000000 | 00000000 | 00000 |
Gray Powder-Coated Steel with Red Actuator | ||||||||||||
2 Circuits with Lockout, Safety Interlock, Fuse Holder | ||||||||||||
| 60 | 240V AC/ 250V DC | Stays Switched (Maintained) | DPST | Single (10 hp @ 240 V AC) | 3 | RK1, RK5, K5, H | 10 1/16" | 6 7/16" | 0000000 | 00000 | 00000000 | 00000 |
3 Circuits with Lockout, Safety Interlock | ||||||||||||
| 60 | 240V AC/ 250V DC | Stays Switched (Maintained) | 3PST | Three (15 hp @ 240 V AC) | 3 | __ | 8 9/16" | 5 7/16" | 0000000 | 000000 | 000000 | 00 |
3 Circuits with Lockout, Safety Interlock, Fuse Holder | ||||||||||||
| 60 | 240V AC/ 250V DC | Stays Switched (Maintained) | 3PST | Single (10 hp @ 240 V AC) Three (15 hp @ 240 V AC) | 4 | RK1, RK5, K5, H | 10 1/16" | 6 7/16" | 0000000 | 000000 | 00000000 | 00000 |
Infrequent-Cycle High-Current Relays
For use with equipment that cycles on and off, these relays meet UL 508 for air conditioning and heating. Connections are accessible from the front, so you can mount relays side-by-side. Also known as definite-purpose contactors.
Enclosures (sold separately) are NEMA 1 rated to protect contacts from corrosion.
Also Available: Auxiliary contacts for 3.8"-7.2" Ht. relays. They allow you to add a signaling device or control another relay. Please select 6564K99, then select the McMaster-Carr part number of your relay and whether you want to switch one circuit on (1 Normally Open) or off (1 Normally Closed).
Switching Current @ 600V AC | hp @ Switching Voltage | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Terminals | Input Voltage | Control Power | Full Load | Resistive Load | Single Phase | Three Phase | Ht. | Wd. | Dp. | Quick-Disconnect Tab Wd. | Specifications Met | Each | |
2 Circuits Controlled with 2 Off (Normally Open)—DPST-NO | |||||||||||||
With Quick-Disconnect and Screw Terminals | |||||||||||||
| 4 | 24V AC | 50.4VA | 60A | 75A | 5 hp @ 115 V AC 10 hp @ 230 V AC | 20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC | 3.8" | 2.6" | 4" | 0.25" | UL Recognized Component, CSA Certified, CE Marked, UL 508 | 00000000 | 0000000 |
| 4 | 120V AC | 50.4VA | 60A | 75A | 5 hp @ 115 V AC 10 hp @ 230 V AC | 20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC | 3.8" | 2.6" | 4" | 0.25" | UL Recognized Component, CSA Certified, CE Marked, UL 508 | 00000000 | 000000 |
| 4 | 24V DC | 5.1W | 60A | 75A | 5 hp @ 115 V AC 10 hp @ 230 V AC | 20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC | 3.8" | 2.6" | 4" | 0.25" | UL Recognized Component, CSA Certified, CE Marked, UL 508 | 00000000 | 000000 |
| 4 | 208/240V AC | 50.4VA | 60A | 75A | 5 hp @ 115 V AC 10 hp @ 230 V AC | 20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC | 3.8" | 2.6" | 4" | 0.25" | UL Recognized Component, CSA Certified, CE Marked, UL 508 | 00000000 | 000000 |
3 Circuits Controlled with 3 Off (Normally Open)—3PST-NO | |||||||||||||
With Quick-Disconnect and Screw Terminals | |||||||||||||
| 6 | 24V AC | 50.4VA | 60A | 75A | 5 hp @ 115 V AC 10 hp @ 230 V AC | 20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC | 3.8" | 2.6" | 4" | 0.25" | UL Recognized Component, CSA Certified, CE Marked, UL 508 | 00000000 | 000000 |
| 6 | 120V AC | 50.4VA | 60A | 75A | 5 hp @ 115 V AC 10 hp @ 230 V AC | 20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC | 3.8" | 2.6" | 4" | 0.25" | UL Recognized Component, CSA Certified, CE Marked, UL 508 | 00000000 | 000000 |
| 6 | 24V DC | 5.1W | 60A | 75A | 5 hp @ 115 V AC 10 hp @ 230 V AC | 20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC | 3.8" | 2.6" | 4" | 0.25" | UL Recognized Component, CSA Certified, CE Marked, UL 508 | 00000000 | 000000 |
| 6 | 208/240V AC | 50.4VA | 60A | 75A | 5 hp @ 115 V AC 10 hp @ 230 V AC | 20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC | 3.8" | 2.6" | 4" | 0.25" | UL Recognized Component, CSA Certified, CE Marked, UL 508 | 00000000 | 000000 |
| Enclosures for 60A 3PST-NO Relays and 4PST-NO Relays | 00000000 | Each | 0000000 |
DIN-Rail Mount Long-Life High-Current Relays
With no moving parts, these solid state relays have an extended service life. Mount them directly to 35 mm DIN rail. They have an integrated heat sink that disperses heat to provide optimal convection cooling. An LED indicator tells you if they are open or closed. Relays are rated for continuous operating duty. They do not switch DC loads.
For technical drawings and 3-D models, click on a part number.
| Number of Terminals | Input Voltage | Control Current, mA | Full Load Switching Current @ 600V AC | hp @ Switching Voltage | Ht. | Wd. | Dp. | Specifications Met | Each | |
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Single Phase | ||||||||||
| 4 | 5-32V DC | 11 | 60A | 1 1/2 hp @ 115 V AC 3 hp @ 230 V AC | 4.3" | 2.8" | 5.6" | UL Listed C-UL Listed CE Marked | 0000000 | 0000000 |
| 4 | 20-275V AC/24-190V DC | 13 | 60A | 1 1/2 hp @ 115 V AC 3 hp @ 230 V AC | 4.3" | 2.8" | 5.6" | UL Listed C-UL Listed CE Marked | 0000000 | 000000 |
High-Starting-Current Vehicle Relays
Relay Socket and
Surface Mounting
Also known as automotive relays, these relays can handle high starting (inrush) currents.
Relays for surface mounting have a tab for added security in high-vibration applications.
Relays | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Switching Current @ Voltage | Relay Sockets with Crimp-On Terminals | Relay Sockets with Wire Leads | ||||||||||||
| Number of Terminals | Input Voltage | Off (Normally Open) Circuit Position | Max. Starting Current, A | Control Current, mA | Ht. | Wd. | Dp. | Quick-Disconnect Tab Wd. | Each | Each | Each | |||
For Relay Socket and Surface Mounting | ||||||||||||||
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO | ||||||||||||||
| 4 | 24V DC | 60 A @ 24 V DC | 200 | 77 | 1.3" | 1.4" | 0.9" | 0.25" and 0.375" | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 000000 |