Choosing an Electrical Switch
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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. 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.
Switches with a fuse holder are used where overload protection is needed. When the current exceeds the fuse’s rating, the fuse will blow, interrupting the circuit to prevent the switch from overheating, breaking, or causing a fire. These switches require rejection-style fuse clips when used with UL Class RK1, RK5, or T fuses. 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.
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/Red Actuator | ||||||||||||||
3 Circuits with Lockout, Safety Interlock, Fuse Holder, Viewing Window | ||||||||||||||
| 200 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PST | Three (150 hp @ 600 V AC) | 4 | RK1, RK5, J, K5, H | 29" | 17" | NEMA 1 | UL Listed, CSA Certified | 0000000 | 000000000 | 00000000 | 000000 |
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.
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, Fuse Holder, Viewing Window | ||||||||||||
| 200 | 600V AC/ 600V DC | Stays Switched (Maintained) | 3PST | Three (150 hp @ 600 V AC) | 4 | RK1, RK5, J, H | 29" | 17" | 0000000 | 000000000 | 00000000 | 000000 |
Water-Resistant Stud-Terminal Relays
Sealed to keep out water, these relays are often used for DC-powered equipment such as forklifts, floor scrubbers, and trucks. They are rated for continuous operation for cycles that run longer than 30 seconds.
| Number of Terminals | Input Voltage | Control Power, VA | Full Load Switching Current @ Voltage | Ht. | Wd. | Dp. | Stud Thread Size | Each | |
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 4 | 12V DC | 8 | 200 A @ 12 V DC | 3.7" | 3.3" | 2.9" | 5/16"-24 | 0000000 | 000000 |