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Choosing an Electrical Switch
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Undervoltage Disconnect Switches
Prevent motors and other equipment from overheating or failing from not having enough voltage. When the supply voltage falls below 35% of the rated voltage, these switches will automatically turn off to protect the circuit from undervoltage. Once the power is cut, they'll keep it isolated to prevent accidental startups during inspection and maintenance.
To prevent unauthorized use of these switches, you can lock them out with a padlock (not included). Even if a padlock blocks them from physically turning off, they’ll disconnect power to the actuator if voltage falls below a safe level.
Switching | ||||||||
|---|---|---|---|---|---|---|---|---|
Current, A | Voltage | Electrical Phase (hp) | Ht. | Wd. | Dp. Behind Panel | Environmental Rating | Each | |
Gray Plastic Housing with Black Actuator | ||||||||
Stays Switched (Maintained) | ||||||||
2 Circuits with Lockout—For 1/2" Panel Cutout Dia. | ||||||||
| 40 | 230V AC | Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC) | 2 5/8" | 2 5/8" | 3 1/8" | IP54 | 0000000 | 0000000 |
| 60 | 230V AC | Single (3 hp @ 120 V AC) Single (7 1/2 hp @ 240 V AC) Three (10 hp @ 240 V AC) | 2 5/8" | 2 5/8" | 3 1/2" | IP54 | 0000000 | 000000 |
3 Circuits with Lockout—For 1/2" Panel Cutout Dia. | ||||||||
| 40 | 400V AC | Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC) | 2 5/8" | 2 5/8" | 3 1/8" | IP54 | 0000000 | 000000 |
| 60 | 400V AC | Single (3 hp @ 120 V AC) Single (7 1/2 hp @ 240 V AC) Three (10 hp @ 240 V AC) | 2 5/8" | 2 5/8" | 3 1/2" | IP54 | 0000000 | 000000 |
Yellow Plastic Housing with Red Actuator | ||||||||
Stays Switched (Maintained) | ||||||||
2 Circuits with Lockout—For 1/2" Panel Cutout Dia. | ||||||||
| 40 | 230V AC | Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC) | 2 5/8" | 2 5/8" | 3 1/8" | IP54 | 0000000 | 000000 |
| 60 | 230V AC | Single (3 hp @ 120 V AC) Single (7 1/2 hp @ 240 V AC) Three (10 hp @ 240 V AC) | 2 5/8" | 2 5/8" | 3 1/2" | IP54 | 0000000 | 000000 |
3 Circuits with Lockout—For 1/2" Panel Cutout Dia. | ||||||||
| 40 | 400V AC | Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC) | 2 5/8" | 2 5/8" | 3 1/8" | IP54 | 0000000 | 000000 |
| 60 | 400V AC | Single (3 hp @ 120 V AC) Single (7 1/2 hp @ 240 V AC) Three (10 hp @ 240 V AC) | 2 5/8" | 2 5/8" | 3 1/2" | IP54 | 0000000 | 000000 |