Choosing an Electrical Switch
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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 1 switches should be used indoors. Those with a power inlet box create a connection point between the switch and a portable generator. The inlet box is rated NEMA 3R, so it can be mounted on the outside of an exterior wall.
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 | Power Cord Lg., ft. | Features | Specifications Met | Each | |
NEMA 1 | |||||||||||||
10 Circuits Total | |||||||||||||
| 7,500W | 30 A @ 240 V AC (1 DPDT) 20 A @ 240 V AC (1 DPDT) 15 A @ 120 V AC (6 SPDT) | 10,000A | Single | Powder-Coated Steel | 11 1/4" | 11 3/4" | 4 3/4" | NEMA L14-30 | __ | __ | UL Listed, UL 1008, NEC Article 702 | 0000000 | 0000000 |
NEMA 1 with NEMA 3R Power Inlet Box | |||||||||||||
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" | 8 3/4" | 6" | NEMA L14-30 | 10 | __ | 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 | 11 1/4" | 11 3/4" | 4 3/4" | NEMA L14-30 | 10 | __ | UL Listed, UL 1008, NEC Article 702 | 0000000 | 000000 |
NEMA 3R | |||||||||||||
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 |