Choosing an Electrical Switch
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Panel-Mount Compact Disconnect Switches
Install these switches in a panel cutout. Small enough to fit in tight spaces, they handle comparable electrical loads to standard sized switches. 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). They’re rated IP65 for protection from washdowns.
For technical drawings and 3-D models, click on a part number.
| Switching Current @ Voltage | Industry Designation | Electrical Phase (hp) | Ht. | Wd. | Dp. Behind Panel | Specifications Met | Each | |
Gray Plastic Housing with Black Actuator | ||||||||
|---|---|---|---|---|---|---|---|---|
Stays Switched (Maintained)  | ||||||||
3 Circuits with Lockout—For 3/8" Panel Cutout Dia. | ||||||||
| 12 A @ 600 V AC, 16 A @ 24 V DC | 3PST | Single (1/2 hp @ 120 V AC) Three (1 hp @ 120 V AC) Three (3 hp @ 240 V AC) | 3 1/4" | 2 1/2" | 1 13/16" | UL Recognized Component, UL 508 | 000000000 | 000000 |
| 16 A @ 600 V AC, 20 A @ 24 V DC | 3PST | Single (1 hp @ 120 V AC) Three (2 hp @ 120 V AC) Three (5 hp @ 240 V AC) | 3 1/4" | 2 1/2" | 1 13/16" | UL Recognized Component, UL 508 | 000000000 | 00000 |
| 20 A @ 600 V AC, 25 A @ 24 V DC | 3PST | Single (1 1/2 hp @ 120 V AC) Three (3 hp @ 120 V AC) Three (5 hp @ 240 V AC) | 3 1/4" | 2 1/2" | 1 13/16" | UL Recognized Component, UL 508 | 000000000 | 00000 |
| 25 A @ 600 V AC, 32 A @ 24 V DC | 3PST | Single (2 hp @ 120 V AC) Three (3 hp @ 120 V AC) Three (7 1/2 hp @ 240 V AC) | 4" | 3 1/8" | 2" | UL Recognized Component, UL 508 | 000000000 | 000000 |
| 50 A @ 600 V AC, 50 A @ 24 V DC | 3PST | Single (3 hp @ 120 V AC) Three (7 1/2 hp @ 120 V AC) Three (15 hp @ 240 V AC) | 4" | 3 1/8" | 3 3/16" | UL Recognized Component, UL 508 | 000000000 | 000000 |
| 63 A @ 600 V AC, 80 A @ 24 V DC | 3PST | Single (5 hp @ 120 V AC) Three (10 hp @ 120 V AC) Three (20 hp @ 240 V AC) | 4" | 3 1/8" | 3 3/16" | UL Recognized Component, UL 508 | 000000000 | 000000 |
4 Circuits with Lockout—For 3/8" Panel Cutout Dia. | ||||||||
| 12 A @ 600 V AC, 16 A @ 24 V DC | 4PST | Single (1/2 hp @ 120 V AC) Three (1 hp @ 120 V AC) Three (3 hp @ 240 V AC) | 3 1/4" | 2 1/2" | 1 13/16" | UL Recognized Component, UL 508 | 000000000 | 00000 |
| 16 A @ 600 V AC, 20 A @ 24 V DC | 4PST | Single (1 hp @ 120 V AC) Three (2 hp @ 120 V AC) Three (5 hp @ 240 V AC) | 3 1/4" | 2 1/2" | 1 13/16" | UL Recognized Component, UL 508 | 000000000 | 00000 |
| 20 A @ 600 V AC, 25 A @ 24 V DC | 4PST | Single (1 1/2 hp @ 120 V AC) Three (3 hp @ 120 V AC) Three (5 hp @ 240 V AC) | 3 1/4" | 2 1/2" | 1 13/16" | UL Recognized Component, UL 508 | 000000000 | 00000 |
| 25 A @ 600 V AC, 32 A @ 24 V DC | 4PST | Single (2 hp @ 120 V AC) Three (3 hp @ 120 V AC) Three (7 1/2 hp @ 240 V AC) | 4" | 3 1/8" | 2" | UL Recognized Component, UL 508 | 000000000 | 000000 |
| 50 A @ 600 V AC, 50 A @ 24 V DC | 4PST | Single (3 hp @ 120 V AC) Three (7 1/2 hp @ 120 V AC) Three (15 hp @ 240 V AC) | 4" | 3 1/8" | 3 3/16" | UL Recognized Component, UL 508 | 000000000 | 000000 |
| 63 A @ 600 V AC, 80 A @ 24 V DC | 4PST | Single (5 hp @ 120 V AC) Three (10 hp @ 120 V AC) Three (20 hp @ 240 V AC) | 4" | 3 1/8" | 3 3/16" | UL Recognized Component, UL 508 | 000000000 | 000000 |
Yellow Plastic Housing with Red Actuator | ||||||||
Stays Switched (Maintained) | ||||||||
3 Circuits with Lockout—For 3/8" Panel Cutout Dia. | ||||||||
| 12 A @ 600 V AC, 16 A @ 24 V DC | 3PST | Single (1/2 hp @ 120 V AC) Three (1 hp @ 120 V AC) Three (3 hp @ 240 V AC) | 3 1/4" | 2 1/2" | 1 13/16" | UL Recognized Component, UL 508 | 00000000 | 00000 |
| 16 A @ 600 V AC, 20 A @ 24 V DC | 3PST | Single (1 hp @ 120 V AC) Three (2 hp @ 120 V AC) Three (5 hp @ 240 V AC) | 3 1/4" | 2 1/2" | 1 13/16" | UL Recognized Component, UL 508 | 00000000 | 00000 |
| 20 A @ 600 V AC, 25 A @ 24 V DC | 3PST | Single (1 1/2 hp @ 120 V AC) Three (3 hp @ 120 V AC) Three (5 hp @ 240 V AC) | 3 1/4" | 2 1/2" | 1 13/16" | UL Recognized Component, UL 508 | 00000000 | 00000 |
| 25 A @ 600 V AC, 32 A @ 24 V DC | 3PST | Single (2 hp @ 120 V AC) Three (3 hp @ 120 V AC) Three (7 1/2 hp @ 240 V AC) | 4" | 3 1/8" | 2" | UL Recognized Component, UL 508 | 00000000 | 000000 |
| 50 A @ 600 V AC, 50 A @ 24 V DC | 3PST | Single (3 hp @ 120 V AC) Three (7 1/2 hp @ 120 V AC) Three (15 hp @ 240 V AC) | 4" | 3 1/8" | 3 3/16" | UL Recognized Component, UL 508 | 00000000 | 000000 |
| 63 A @ 600 V AC, 80 A @ 24 V DC | 3PST | Single (5 hp @ 120 V AC) Three (10 hp @ 120 V AC) Three (20 hp @ 240 V AC) | 4" | 3 1/8" | 3 3/16" | UL Recognized Component, UL 508 | 00000000 | 000000 |
4 Circuits with Lockout—For 3/8" Panel Cutout Dia. | ||||||||
| 12 A @ 600 V AC, 16 A @ 24 V DC | 4PST | Single (1/2 hp @ 120 V AC) Three (1 hp @ 120 V AC) Three (3 hp @ 240 V AC) | 3 1/4" | 2 1/2" | 1 13/16" | UL Recognized Component, UL 508 | 00000000 | 00000 |
| 16 A @ 600 V AC, 20 A @ 24 V DC | 4PST | Single (1 hp @ 120 V AC) Three (2 hp @ 120 V AC) Three (5 hp @ 240 V AC) | 3 1/4" | 2 1/2" | 1 13/16" | UL Recognized Component, UL 508 | 00000000 | 00000 |
| 20 A @ 600 V AC, 25 A @ 24 V DC | 4PST | Single (1 1/2 hp @ 120 V AC) Three (3 hp @ 120 V AC) Three (5 hp @ 240 V AC) | 3 1/4" | 2 1/2" | 1 13/16" | UL Recognized Component, UL 508 | 00000000 | 00000 |
| 25 A @ 600 V AC, 32 A @ 24 V DC | 4PST | Single (2 hp @ 120 V AC) Three (3 hp @ 120 V AC) Three (7 1/2 hp @ 240 V AC) | 4" | 3 1/8" | 2" | UL Recognized Component, UL 508 | 00000000 | 000000 |
| 50 A @ 600 V AC, 50 A @ 24 V DC | 4PST | Single (3 hp @ 120 V AC) Three (7 1/2 hp @ 120 V AC) Three (15 hp @ 240 V AC) | 4" | 3 1/8" | 3 3/16" | UL Recognized Component, UL 508 | 00000000 | 000000 |
| 63 A @ 600 V AC, 80 A @ 24 V DC | 4PST | Single (5 hp @ 120 V AC) Three (10 hp @ 120 V AC) Three (20 hp @ 240 V AC) | 4" | 3 1/8" | 3 3/16" | UL Recognized Component, UL 508 | 00000000 | 000000 |
Enclosed Compact Disconnect Switches
Small yet mighty, these switches are about as tall and wide as an index card yet durable enough to mount directly to a wall. Their polycarbonate housing protects the switch and resists denting, chipping, and cracking. Rated IP65, the housing also seals out water even in frequently washed down areas. Don’t be fooled by their size—these switches can handle electrical loads comparable to a standard sized switch.
These switches 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.
Yellow Plastic Housing with Red Actuator | ||||||||
|---|---|---|---|---|---|---|---|---|
| Switching Current @ Voltage | Industry Designation | Electrical Phase (hp) | Ht. | Wd. | Environmental Rating | Specifications Met | Each | |
Stays Switched (Maintained) | ||||||||
3 Circuits with Lockout | ||||||||
| 12 A @ 600 V AC, 16 A @ 24 V DC | 3PST | Single (1/2 hp @ 120 V AC) Three (1 hp @ 120 V AC) Three (3 hp @ 240 V AC) | 4 3/4" | 3 13/16" | IP65 | UL Recognized Component, CSA Certified, UL 508 | 00000000 | 0000000 |
| 16 A @ 600 V AC, 20 A @ 24 V DC | 3PST | Single (1 hp @ 120 V AC) Three (2 hp @ 120 V AC) Three (5 hp @ 240 V AC) | 4 3/4" | 3 13/16" | IP65 | UL Recognized Component, CSA Certified, UL 508 | 00000000 | 000000 |
| 20 A @ 600 V AC, 25 A @ 24 V DC | 3PST | Single (1 1/2 hp @ 120 V AC) Three (3 hp @ 120 V AC) Three (5 hp @ 240 V AC) | 4 3/4" | 3 13/16" | IP65 | UL Recognized Component, CSA Certified, UL 508 | 00000000 | 000000 |
| 25 A @ 600 V AC, 32 A @ 24 V DC | 3PST | Single (2 hp @ 120 V AC) Three (3 hp @ 120 V AC) Three (7 1/2 hp @ 240 V AC) | 4 3/4" | 3 13/16" | IP65 | UL Recognized Component, CSA Certified, UL 508 | 00000000 | 000000 |
| 50 A @ 600 V AC, 50 A @ 24 V DC | 3PST | Single (3 hp @ 120 V AC) Three (15 hp @ 240 V AC) Three (7 1/2 hp @ 120 V AC) | 5 5/16" | 6 11/16" | IP65 | UL Recognized Component, CSA Certified, UL 508 | 00000000 | 000000 |
| 63 A @ 600 V AC, 80 A @ 24 V DC | 3PST | Single (5 hp @ 120 V AC) Three (10 hp @ 120 V AC) Three (20 hp @ 240 V AC) | 5 5/16" | 6 11/16" | IP65 | UL Recognized Component, CSA Certified, UL 508 | 00000000 | 000000 |
4 Circuits with Lockout | ||||||||
| 12 A @ 600 V AC, 16 A @ 24 V DC | 4PST | Single (1/2 hp @ 120 V AC) Three (1 hp @ 120 V AC) Three (3 hp @ 240 V AC) | 4 3/4" | 3 13/16" | IP65 | UL Recognized Component, CSA Certified | 00000000 | 000000 |
| 16 A @ 600 V AC, 20 A @ 24 V DC | 4PST | Single (1 hp @ 120 V AC) Three (2 hp @ 120 V AC) Three (5 hp @ 240 V AC) | 4 3/4" | 3 13/16" | IP65 | UL Recognized Component, CSA Certified | 00000000 | 000000 |
| 20 A @ 600 V AC, 25 A @ 24 V DC | 4PST | Single (1 1/2 hp @ 120 V AC) Three (3 hp @ 120 V AC) Three (5 hp @ 240 V AC) | 4 3/4" | 3 13/16" | IP65 | UL Recognized Component, CSA Certified | 00000000 | 000000 |
| 25 A @ 600 V AC, 32 A @ 24 V DC | 4PST | Single (2 hp @ 120 V AC) Three (3 hp @ 120 V AC) Three (7 1/2 hp @ 240 V AC) | 4 3/4" | 3 13/16" | IP65 | UL Recognized Component, CSA Certified | 00000000 | 000000 |
| 50 A @ 600 V AC, 50 A @ 24 V DC | 4PST | Single (3 hp @ 120 V AC) Three (15 hp @ 240 V AC) Three (7 1/2 hp @ 120 V AC) | 5 5/16" | 6 11/16" | IP65 | UL Recognized Component, CSA Certified | 00000000 | 000000 |
| 63 A @ 600 V AC, 80 A @ 24 V DC | 4PST | Single (5 hp @ 120 V AC) Three (10 hp @ 120 V AC) Three (20 hp @ 240 V AC) | 5 5/16" | 6 11/16" | IP65 | UL Recognized Component, CSA Certified | 00000000 | 000000 |
Frame-Mounted Safety Switches
Also known as interlock switches, these ensure the safety of personnel by automatically shutting off power to machinery when an access door opens. Mount the switch to the door frame and mount a key to the door so that the key is inserted into the switch when the door is closed. When the door opens, the key is removed from the switch and the machine shuts down. They’re often used with machine guards for large robots.
All switches require an actuator key, but not all include one—check whether you need to pick out a separate actuator key. For some switch styles, you can also select the mounting orientation of the key. Flexible keys pivot at least 15°, making them easier to align with switches during installation.
Style A-G switches have positive-force, normally closed contacts that will open a circuit when the switch is actuated even if a spring fails or the contacts stick.
IP67 rated switches protect against temporary submersion. NEMA 4 rated switches protect against washdowns. NEMA 6 rated switches protect against both temporary submersion and washdowns.
For technical drawings and 3-D models, click on a part number.
Housing | Conduit | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Style | No. of Circuits Controlled | Switch Starting Position | Switch Action | No. of Terminals | Industry Designation | Switching Current @ Voltage | Max. Voltage | Ht. | Wd. | Dp. | Trade Size | Thread Size | Thread Type | Key Included | Environmental Rating | Each | |
Wire Lead Connection with Positive-Force Normally Closed Contacts | |||||||||||||||||
| A | 2 | 1 Off (Normally Open) and 1 On (Normally Closed) | Stays Switched (Maintained) | 2 | DPST-1NO/1NC | 8 A @ 120 V AC, 4 A @ 24 V DC | 250V AC 24V DC | 3.3" | 1.2" | 1.2" | __ | M16 | Metric | Yes | IP67 | 00000000 | 0000000 |
Screw Terminal Connection with Positive-Force Normally Closed Contacts | |||||||||||||||||
| B | 2 | 1 Off (Normally Open) and 1 On (Normally Closed) | Stays Switched (Maintained) | 4 | DPST-1NO/1NC | 5 A @ 120 V AC, 2 A @ 24 V DC | 500V AC 250V DC | 3" | 1" | 1.1" | 1/2 | __ | NPT | Yes | IP67, NEMA 6 | 00000000 | 000000 |
| C | 2 | 1 Off (Normally Open) and 1 On (Normally Closed) | Stays Switched (Maintained) | 4 | DPST-1NO/1NC | 10 A @ 120 V AC, 2 A @ 24 V DC | 250V AC 24V DC | 3.6" | 2.1" | 1.3" | 1/2 | __ | NPT | Yes | IP65, NEMA 4 | 00000000 | 000000 |
| C | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 3 | 3PST-1NO/2NC | 8 A @ 120 V AC, 4 A @ 24 V DC | 600V AC 250V DC | 3.5" | 2.1" | 1.2" | 1/2 | __ | NPT | Yes | IP67 | 00000000 | 000000 |
| C | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 6 | 3PST-1NO/2NC | 4 A @ 230 V AC, 4 A @ 24 V DC | 500V AC 24V DC | 3.5" | 2" | 1.2" | __ | M16 | Metric | Yes | IP67 | 00000000 | 000000 |
| D | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 6 | 3PST-1NO/2NC | 6 A @ 120 V AC, 0.27 A @ 24 V DC | 240V AC 250V DC | 3.8" | 1.2" | 1.2" | 1/2 | __ | NPT | Yes | IP67 | 00000000 | 00000 |
| E | 2 | 1 Off (Normally Open) and 1 On (Normally Closed) | Stays Switched (Maintained) | 4 | DPST-1NO/1NC | 8 A @ 230 V AC, 5 A @ 24 V DC | 400V AC 24V DC | 4.2" | 2" | 1.6" | __ | M20 | Metric | No | IP67 | 00000000 | 00000 |
| E | 2 | 2 On (Normally Closed) | Stays Switched (Maintained) | 4 | DPST-NC | 8 A @ 230 V AC, 5 A @ 24 V DC | 400V AC 24V DC | 4.2" | 2" | 1.6" | __ | M20 | Metric | No | IP67 | 00000000 | 00000 |
Screw Terminal Connection with Positive-Force Normally Closed Contacts and Rotating Head | |||||||||||||||||
| C | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 6 | 3PST-1NO/2NC | 5 A @ 120 V AC, 5 A @ 24 V DC | 400V AC 400V DC | 3.5" | 2" | 1.3" | 1/2 | __ | NPT | Yes | IP65 | 00000000 | 000000 |
| G | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 6 | 3PST-1NO/2NC | 10 A @ 230 V AC, 4 A @ 24 V DC | 250V AC 24V DC | 4.3" | 1.6" | 1.4" | __ | M20 | Metric | No | IP67 | 00000000 | 000000 |
O'all | |||||||
|---|---|---|---|---|---|---|---|
| Angle Range | Adjustability | Lg. | Wd. | Mounting Fasteners Included | Each | ||
Straight Keys | |||||||
| For Style E | __ | __ | 80 mm | 32 mm | No | 00000000 | 000000 |
| For Style G | __ | __ | 86 mm | 32 mm | No | 00000000 | 00000 |
90° Angle Keys | |||||||
| For Style E | __ | __ | 65.5 mm | 32 mm | No | 00000000 | 00000 |
Flexible Keys | |||||||
| For Style D | 0°-15° | Up/Down/Left/Right | 48.9 mm | 55 mm | No | 000000000 | 00000 |
| For Style G | 0°-15° | Up/Down/Left/Right | 105 mm | 40 mm | No | 00000000 | 000000 |
Access-Delay Frame-Mounted Safety Switches
Delay access to hazardous areas until conditions are safe; use these switches with machines that take time to stop after they are turned off. Mount the switch to the door frame and mount the key to the door so that the key is inserted into the switch when the door is closed. When the door is pulled, the key is held in place with 225 lbs. of force until the switch receives a signal from a time-delay relay, motion sensor, or position sensor (not included) that the machine’s motion has stopped. After the motion has stopped, the key can be removed from the switch, releasing the access door. They’re often used with machine guards. All have positive-force, normally-closed contacts that will open a circuit when the switch is actuated even if a spring fails or the contacts stick. They’re rated for protection from washdowns and temporary submersion.
Style A and B have a key entry on the top and side of the switch.
Style C has a key entry on two opposite sides of the switch.
Emergency override keys (sold separately) bypass the access delay feature.
For technical drawings and 3-D models, click on a part number.
Housing | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Style | No. of Circuits Controlled | Switch Starting Position | Switch Action | No. of Terminals | Industry Designation | Switching Current @ Voltage | Max. Voltage | Input Voltage | Holding Force, lbs. | Ht. | Wd. | Dp. | Wire Connection Type | Conduit Trade Size | Each | |
Positive-Force Normally Closed Contacts | ||||||||||||||||
| A | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 6 | 3PST-1NO/2NC | 5 A @ 120 V AC, 2 A @ 24 V DC | 500V AC 250V DC | 24V AC, 24V DC | 225 | 4.7" | 2.3" | 1.4" | Screw Terminals | 1/2 | 0000000 | 0000000 |
| A | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 6 | 3PST-1NO/2NC | 5 A @ 120 V AC, 2 A @ 24 V DC | 500V AC 250V DC | 110V AC | 225 | 4.7" | 2.3" | 1.4" | Screw Terminals | 1/2 | 0000000 | 000000 |
| B | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 14 | 3PST-1NO/2NC | 3 A @ 120 V AC, 2.5 A @ 24 V DC | 250V DC 240V AC | 24V DC | 225 | 3.7" | 3.5" | 1.4" | Screw Terminals | 1/2 | 0000000 | 000000 |
Positive-Force Normally Closed Contacts and Rotating Head | ||||||||||||||||
| C | 4 | 2 Off (Normally Open) and 2 On (Normally Closed) | Stays Switched (Maintained) | 8 | 4PST-2NO/2NC | 4 A @ 120 V AC, 4 A @ 24 V DC | 240V AC 24V DC | 24V AC, 24V DC | 225 | 7.6" | 1.2" | 1.6" | Screw Terminals | 1/2 | 0000000 | 000000 |
| Emergency Override Key for Style A | 0000000 | Each | 000000 |