Choosing an Electrical Switch
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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).
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.
Use switches with a fuse holder where overload protection is needed. When the current exceeds the rating of the fuse, it blows. This interrupts the circuit and prevents overheating, damage, and fire. 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 a viewing window let you see the switch position without opening the enclosure.
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, Viewing Window | ||||||||||||
30 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PST | Single (10 hp @ 240 V AC) Three (30 hp @ 600 V AC) | 3 | __ | 15" | 7 3/4" | 0000000 | 0000000 | 000000 | 00 |
60 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PST | Single (30 hp @ 240 V AC) Three (60 hp @ 600 V AC) | 3 | __ | 18 1/2" | 9 1/16" | 0000000 | 000000 | 000000 | 00 |
3 Circuits with Lockout, Safety Interlock, Fuse Holder, Viewing Window | ||||||||||||
30 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PST | Three (20 hp @ 600 V AC) | 3 | RK1, RK5, J, H | 15" | 7 3/4" | 0000000 | 000000 | 00000000 | 000000 |
30 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PST | Three (20 hp @ 600 V AC) | 4 | RK1, RK5, J, H | 15" | 7 3/4" | 0000000 | 000000 | 00000000 | 00000 |
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 | 00000 |
60 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PST | Three (50 hp @ 600 V AC) | 4 | RK1, RK5, J, H | 18 1/2" | 9 1/16" | 0000000 | 000000 | 00000000 | 00000 |
100 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PST | Three (75 hp @ 600 V AC) | 4 | RK1, RK5, J, H | 22 1/8" | 9 1/16" | 0000000 | 00000000 | 00000000 | 00000 |
200 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PST | Three (150 hp @ 600 V AC) | 4 | RK1, RK5, J, H | 29" | 17" | 0000000 | 00000000 | 00000000 | 00000 |
Gray Powder-Coated Steel with Red Actuator | ||||||||||||
2 Circuits with Lockout, Fuse Holder | ||||||||||||
30 | 240V AC/ 250V DC | Stays Switched (Maintained) | DPST | Single (3 hp @ 240 V AC) | 3 | RK1, RK5, K5, H | 8 9/16" | 5 7/16" | 0000000 | 000000 | 00000000 | 000000 |
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 | 000000 | 00000000 | 00000 |
2 Circuits with Lockout, Safety Interlock, Fuse Holder | ||||||||||||
100 | 240V AC/ 250V DC | Stays Switched (Maintained) | DPST | Single (15 hp @ 240 V AC) | 3 | RK1, RK5, K5, T, H | 23 1/8" | 12" | 0000000 | 000000 | 00000000 | 00000 |
3 Circuits with Lockout | ||||||||||||
30 | 240V AC/ 250V DC | Stays Switched (Maintained) | 3PST | Three (7 1/2 hp @ 240 V AC) | 3 | __ | 6 3/8" | 4 9/16" | 0000000 | 000000 | 000000 | 00 |
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, Fuse Holder | ||||||||||||
30 | 240V AC/ 250V DC | Stays Switched (Maintained) | 3PST | Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC) | 4 | RK1, RK5, K5, H | 8 9/16" | 5 7/16" | 0000000 | 000000 | 00000000 | 000000 |
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 |
3 Circuits with Lockout, Safety Interlock | ||||||||||||
100 | 240V AC/ 250V DC | Stays Switched (Maintained) | 3PST | Three (30 hp @ 240 V AC) | 3 | __ | 23 1/8" | 12" | 0000000 | 000000 | 000000 | 00 |
3 Circuits with Lockout, Safety Interlock, Fuse Holder | ||||||||||||
100 | 240V AC/ 250V DC | Stays Switched (Maintained) | 3PST | Single (15 hp @ 240 V AC) Three (30 hp @ 240 V AC) | 4 | RK1, RK5, K5, T, H | 23 1/8" | 11 3/4" | 0000000 | 000000 | 00000000 | 00000 |
Rejection-Style Fuse Clip for T Fuse Class | 00000000 | Each | 000000 |
Enclosed Disconnect Switches
Cut power and keep it isolated to prevent equipment from starting up during inspection and maintenance. These switches are housed in a protective enclosure that resists denting, chipping, and cracking. Mount them to the wall when you run out of space in an electrical panel.
Switches with lockout secure in the off position with a padlock with a maximum shackle diameter of 5/16” (not included).
Photovoltaic switches can be used with photovoltaic cells which convert sunlight into electricity.
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.
For technical drawings and 3-D models, click on a part number.



Switching | ||||||||
---|---|---|---|---|---|---|---|---|
Current, A | Voltage | Industry Designation | Electrical Phase (hp) | Ht. | Wd. | Environmental Rating | Each | |
Plastic Housing with Red Actuator | ||||||||
Stays Switched (Maintained) | ||||||||
2 Circuits with Lockout/Photovoltaic | ||||||||
32 | 800V DC | DPST | __ | 11" | 7 1/2" | IP66, IP67, NEMA 3S, NEMA 6P, NEMA 12 | 0000000 | 0000000 |
50 | 800V DC | DPST | __ | 12 5/8" | 8 11/16" | IP65, NEMA 3R | 0000000 | 000000 |
63 | 650V DC | DPST | __ | 12 5/8" | 8 11/16" | IP65, NEMA 3R | 0000000 | 000000 |
3 Circuits | ||||||||
50 | 600V AC | 3PST | Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC) | 8 11/16" | 5 7/8" | IP40, NEMA 3 | 00000000 | 000000 |
63 | 600V AC | 3PST | Single (3 hp @ 120 V AC) Single (5 hp @ 240 V AC) Three (10 hp @ 240 V AC) | 8 11/16" | 5 7/8" | IP40, NEMA 3 | 00000000 | 000000 |
80 | 600V AC | 3PST | Single (3 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (20 hp @ 240 V AC) | 8 11/16" | 5 7/8" | IP40, NEMA 3 | 00000000 | 000000 |
100 | 600V AC | 3PST | Single (5 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (25 hp @ 240 V AC) | 8 11/16" | 5 7/8" | IP40, NEMA 3 | 00000000 | 000000 |
3 Circuits with Lockout | ||||||||
50 | 600V AC | 3PST | Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC) | 8 11/16" | 5 7/8" | IP40, NEMA 3 | 00000000 | 000000 |
63 | 600V AC | 3PST | Single (3 hp @ 120 V AC) Single (5 hp @ 240 V AC) Three (10 hp @ 240 V AC) | 8 11/16" | 5 7/8" | IP40, NEMA 3 | 00000000 | 000000 |
80 | 600V AC | 3PST | Single (3 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (20 hp @ 240 V AC) | 8 11/16" | 5 7/8" | IP40, NEMA 3 | 00000000 | 000000 |
100 | 600V AC | 3PST | Single (5 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (25 hp @ 240 V AC) | 8 11/16" | 5 7/8" | IP40, NEMA 3 | 00000000 | 000000 |
Plastic Housing with Gray Actuator | ||||||||
Stays Switched (Maintained) | ||||||||
3 Circuits | ||||||||
50 | 600V AC | 3PST | Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC) | 8 11/16" | 5 7/8" | IP40, NEMA 3 | 00000000 | 000000 |
63 | 600V AC | 3PST | Single (3 hp @ 120 V AC) Single (5 hp @ 240 V AC) Three (10 hp @ 240 V AC) | 8 11/16" | 5 7/8" | IP40, NEMA 3 | 00000000 | 000000 |
80 | 600V AC | 3PST | Single (3 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (20 hp @ 240 V AC) | 8 11/16" | 5 7/8" | IP40, NEMA 3 | 00000000 | 000000 |
100 | 600V AC | 3PST | Single (5 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (25 hp @ 240 V AC) | 8 11/16" | 5 7/8" | IP40, NEMA 3 | 00000000 | 000000 |
3 Circuits with Lockout | ||||||||
50 | 600V AC | 3PST | Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC) | 8 11/16" | 5 7/8" | IP40, NEMA 3 | 00000000 | 000000 |
63 | 600V AC | 3PST | Single (3 hp @ 120 V AC) Single (5 hp @ 240 V AC) Three (10 hp @ 240 V AC) | 8 11/16" | 5 7/8" | IP40, NEMA 3 | 00000000 | 000000 |
80 | 600V AC | 3PST | Single (3 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (20 hp @ 240 V AC) | 8 11/16" | 5 7/8" | IP40, NEMA 3 | 00000000 | 000000 |
100 | 600V AC | 3PST | Single (5 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (25 hp @ 240 V AC) | 8 11/16" | 5 7/8" | IP40, NEMA 3 | 00000000 | 000000 |
"Main Switch" Label with Adhesive Back—13/16" Ht. × 3 3/16" Wd. | 0000000 | Each | 000000 |

Switching Current, A | Each | |
10 | 0000000 | 000000 |
Hazardous Location Enclosed Disconnect Switches


With a housing that’s designed to contain an explosion, these switches are safe to use in areas where ignitable concentrations of flammable or combustible gas, dust, or fibers may be present. They meet NEC Class I Div. 1 and 2, Groups B, C, D, and Class II, Div. 1 and 2, Groups E, F, and G. Use them to cut power and keep it isolated, so equipment won’t accidentally start up during inspection or maintenance.
Made from aluminum, these switches also resist corrosion in wet or oily areas. They 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 | Switch Action | Industry Designation | Electrical Phase (hp) | Ht. | Wd. | Environmental Rating | Each | ||
Powder-Coated Aluminum Housing with Red Actuator | ||||||||||
3 Circuits with Lockout | ||||||||||
A | 30 | 600V AC | Stays Switched (Maintained) | 3PST | Three (30 hp @ 600 V AC) | 8 1/16" | 5 3/4" | NEC Class I Divisions 1, 2 Groups B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Zone 1 Groups IIB, IIA NEMA 4X NEMA 7 NEMA 9 | 0000000 | 000000000 |
Powder-Coated Aluminum Housing with Yellow Actuator | ||||||||||
3 Circuits with Lockout | ||||||||||
B | 60 | 600V AC | Stays Switched (Maintained) | 3PST | Three (40 hp @ 600 V AC) | 13 1/16" | 8 1/8" | NEC Class I Divisions 1, 2 Groups B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Zone 1 Groups IIB, IIA NEMA 4X NEMA 7 NEMA 9 | 0000000 | 00000000 |
B | 100 | 600V AC | Stays Switched (Maintained) | 3PST | Three (50 hp @ 600 V AC) | 13 1/16" | 8 1/8" | NEC Class I Divisions 1, 2 Groups B, C, D NEC Class II Divisions 1, 2 Groups E, F, G NEC Zone 1 Groups IIB, IIA NEMA 4X NEMA 7 NEMA 9 | 0000000 | 00000000 |
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.

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 |

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 |
Manual Transfer Switches

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 3R switches can be used outdoors since they seal out rain, snow, and sleet.
Switches with a key lock prevent unauthorized changes to the switch.
Housing | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Max. Power | Switching Current (No. of Switches) | Circuit Breaker Breakthrough Current | Electrical Phase | Housing Material | Ht. | Wd. | Dp. | Generator Connection Style | Features | Specifications Met | Each | |
NEMA 3R | ||||||||||||
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 3/4" | 8" | 5" | NEMA L14-30 | Key Lock | UL Listed, UL 1008, NEC Article 702 | 0000000 | 0000000 |
12,500W | 20 A @ 240 V AC (1 DPDT) 15 A @ 120 V AC (4 SPDT) | 10,000A | Single | Powder-Coated Steel | 12 3/4" | 8" | 5" | CS6375 | Key Lock | 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 | 12 3/4" | 12" | 5" | NEMA L14-30 | Key Lock | UL Listed, UL 1008, NEC Article 702 | 0000000 | 000000 |
12,500W | 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 | 12 3/4" | 12" | 5" | CS6375 | Key Lock | UL Listed, UL 1008, NEC Article 702 | 0000000 | 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.
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 Type | Key Included | Environmental Rating | Each | |
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 | 0000000 |
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 |
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.
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 |
Emergency Override Key for Style A | 0000000 | Each | 000000 |