Choosing an Electrical Switch
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Rotary Switches
Control multiple devices with one switch. Turn the shaft to change switch positions. Each position closes a set of contacts per circuit, so you can select between multiple devices on one or more circuits.
Switches for 13/32" panel cutout diameter require a knob.
Shaft | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| No. of Circuits Controlled | Switch Action | No. of Positions | No. of Terminals | Dp. Behind Panel | O'all Dia. | Lg. | Dia. | Each | ||
Plastic | ||||||||||
With Tab Terminals for 13/32" Panel Cutout Dia. | ||||||||||
| 3 | Stays Switched (Maintained) | 4 | 15 | 13/16" | 1" | 1 1/2" | 1/4" | 2.5 A @ 125 V AC, 0.35 A @ 125 V DC | 00000000 | 000000 |
DIN-Rail Mount Solid State Relays
Unlike mechanical relays, these solid state relays have no moving parts, so they require less maintenance and last longer, switch faster, and are quieter. They mount on 35 mm DIN rail (also known as DIN 3) for fast installation. An LED indicator lights up when these relays are connected, so you can quickly confirm that they’re wired correctly. IP20 rated, their terminals are recessed, so they prevent fingers and other objects from touching live circuits.
Relays with an integrated heat sink disperse heat to increase the relay’s current rating.
Relays with an integrated fan are best for applications that generate more heat. The fan automatically turns on to provide additional cooling. When the temperature exceeds 176° F, an alarm sends a signal to an external device, such as a controller or indicating light.
| Number of Terminals | Input Voltage | Control Current, mA | Switching Current @ Voltage (Load Type) | Max. Switching Voltage | hp @ Switching Voltage | Ht. | Wd. | Dp. | Features | Each | |
2 Circuits Controlled with 2 Off (Normally Open)—DPST-NO | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Two Phase | |||||||||||
| 15 | 24V AC, 120V AC, 208V AC, 240V AC, 277V AC/24V DC, 48V DC, 60V DC, 120V DC | 2 | 75 A @ 600 V AC (Full Load) | 660V AC | 10 hp @ 230 V AC 20 hp @ 480 V AC | 5.55" | 2.84" | 4.679" | Integrated Heat Sink, Integrated Fan, LED Indicator | 0000000 | 0000000 |
| 15 | 5V DC, 6V DC, 12V DC, 24V DC, 30V DC | 10 | 75 A @ 600 V AC (Full Load) | 660V AC | 10 hp @ 230 V AC 20 hp @ 480 V AC | 5.55" | 2.84" | 4.679" | Integrated Heat Sink, Integrated Fan, LED Indicator | 0000000 | 000000 |
3 Circuits Controlled with 3 Off (Normally Open)—3PST-NO | |||||||||||
Three Phase | |||||||||||
| 15 | 24V AC, 120V AC, 208V AC, 240V AC, 277V AC/24V DC, 48V DC, 60V DC, 120V DC | 2 | 40 A @ 600 V AC (Full Load) | 660V AC | 5 hp @ 230 V AC 10 hp @ 480 V AC | 5.31" | 2.13" | 3.739" | Integrated Heat Sink, Integrated Fan, LED Indicator | 0000000 | 000000 |
| 15 | 24V AC, 120V AC, 208V AC, 240V AC, 277V AC/24V DC, 48V DC, 60V DC, 120V DC | 2 | 65 A @ 600 V AC (Full Load) | 660V AC | 10 hp @ 230 V AC 20 hp @ 480 V AC | 5.55" | 2.84" | 4.679" | Integrated Heat Sink, Integrated Fan, LED Indicator | 0000000 | 000000 |
| 15 | 5V DC, 6V DC, 12V DC, 24V DC, 30V DC | 10 | 40 A @ 600 V AC (Full Load) | 660V AC | 5 hp @ 230 V AC 10 hp @ 480 V AC | 5.31" | 2.13" | 3.739" | Integrated Heat Sink, Integrated Fan, LED Indicator | 0000000 | 000000 |
| 15 | 5V DC, 6V DC, 12V DC, 24V DC, 30V DC | 10 | 65 A @ 600 V AC (Full Load) | 660V AC | 10 hp @ 230 V AC 20 hp @ 480 V AC | 5.55" | 2.84" | 4.679" | Integrated Heat Sink, Integrated Fan, LED Indicator | 0000000 | 000000 |