Choosing an Electrical Switch
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Toggle Switches
Switches with an on-on or on-(on) position designation alternate power between sets of terminals.
To view switch wiring diagrams, select a part number and click Product Detail.
For technical drawings and 3-D models, click on a part number.
| No. of Circuits Controlled | Switch Starting Position | Switch Action | No. of Terminals | Industry Designation | Position Designation  | Switching Current @ Voltage | Max. Voltage | For Max. Panel Thick. | Mounting Hardware Included | Choose a Wire Connection Type | Each | |
2 Position with Rounded Toggle | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For 1/2" Panel Cutout Dia. | ||||||||||||
| 3 | 3 Off (Normally Open) or 3 On (Normally Closed) | Stays Switched (Maintained) | 9 | 3PDT | On-On | 15 A @ 125 V AC/28 V DC | 28V DC 250V AC | 0.13" | Yes | 00000000 | 000000 | |
| No. of Circuits Controlled | Switch Starting Position | Switch Action | No. of Terminals | Industry Designation | Position Designation | Switching Current @ Voltage | Max. Voltage | For Max. Panel Thick. | Mounting Hardware Included | Choose a Wire Connection Type | Each | |
3 Position with Rounded Toggle | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For 1/2" Panel Cutout Dia. | ||||||||||||
| 3 | 3 Off (Normally Open) or 3 On (Normally Closed) | Stays Switched (Maintained) | 9 | 3PDT | On-Off-On | 15 A @ 125 V AC/28 V DC | 28V DC 250V AC | 0.13" | Yes | 00000000 | 000000 | |
Miniature Toggle Switches
Maximize the space in a panel—these switches are half the size of most toggle switches.
Switches with an on-on or on-(on) position designation alternate power between sets of terminals.
For technical drawings and 3-D models, click on a part number.
| No. of Circuits Controlled | Switch Starting Position | Switch Action | No. of Terminals | Industry Designation | Position Designation | Switching Current @ Voltage | Max. Voltage | Dp. Behind Panel | Mounting Hardware Included | Wire Connection Type | Each | |
2 Position with Rounded Toggle | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For 1/4" Panel Cutout Dia. | ||||||||||||
| 3 | 3 Off (Normally Open) or 3 On (Normally Closed) | Stays Switched (Maintained) | 9 | 3PDT | On-On | 6 A @ 125 V AC, 4 A @ 30 V DC | 30V DC 250V AC | 0.66" | Yes | Solder Lugs | 0000000 | 000000 |
High-Current Toggle Switches
Able to withstand high currents, these switches are often used with motors and pumps.
Switches with an on-on position designation alternate power between sets of terminals.
For technical drawings and 3-D models, click on a part number.
| No. of Circuits Controlled | Switch Starting Position | Switch Action | No. of Terminals | Industry Designation | Position Designation | Switching Current @ Voltage | Max. Voltage | Dp. Behind Panel | Mounting Hardware Included | Each | |
2 Position with Quick-Disconnect Terminals | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
For 1/2" Panel Cutout Dia. | |||||||||||
| 3 | 3 Off (Normally Open) or 3 On (Normally Closed) | Stays Switched (Maintained) | 9 | 3PDT | On-On | 20 A @ 125 V AC, 20 A @ 30 V DC | 30V DC 250V AC | 1.31" | Yes | 0000000 | 000000 |
2 Position with Screw Terminals | |||||||||||
For 1/2" Panel Cutout Dia. | |||||||||||
| 3 | 3 Off (Normally Open) or 3 On (Normally Closed) | Stays Switched (Maintained) | 9 | 3PDT | On-On | 30 A @ 125 V AC/30 V DC | 30V DC 250V AC | 1.34" | Yes | 0000000 | 00000 |
3 Position with Quick-Disconnect Terminals | |||||||||||
For 1/2" Panel Cutout Dia. | |||||||||||
| 3 | 3 Off (Normally Open) or 3 On (Normally Closed) | Stays Switched (Maintained) | 9 | 3PDT | On-Off-On | 20 A @ 125 V AC, 20 A @ 30 V DC | 30V DC 250V AC | 1.31" | Yes | 0000000 | 00000 |
3 Position with Screw Terminals | |||||||||||
For 1/2" Panel Cutout Dia. | |||||||||||
| 3 | 3 Off (Normally Open) or 3 On (Normally Closed) | Stays Switched (Maintained) | 9 | 3PDT | On-Off-On | 30 A @ 125 V AC/30 V DC | 30V DC 250V AC | 1.34" | Yes | 0000000 | 00000 |
3 Position with Solder Lugs | |||||||||||
For 1/2" Panel Cutout Dia. | |||||||||||
| 3 | 3 Off (Normally Open) or 3 On (Normally Closed) | Stays Switched (Maintained) | 9 | 3PDT | On-Off-On | 20 A @ 125 V AC, 20 A @ 30 V DC | 30V DC 250V AC | 1.08" | Yes | 0000000 | 00000 |
Cam Panel-Mount Lever Switches
Thanks to their ability to handle higher current than switches with contact blocks, these switches are often found in applications from large motors to warehouse lighting systems. The cam pushes contacts more tightly together than contact blocks, allowing more electricity to flow through. However, they aren’t made to be rewired like switches with contact blocks are. These switches require you to grip and twist a lever to turn circuits on or off, so they won’t accidentally actuate if you bump into them. Mount them in a standard panel cutout diameter.
Choose a switch based on the complexity of your application. Changeover switches have three positions. They work well if you need to toggle between a primary power source and a backup generator. Selector switches have up to six positions. They give you the most control, allowing you to turn on or off multiple devices or different parts of your machine.
Legend plates (sold separately) give you a way to change your switch’s message.
For technical drawings and 3-D models, click on a part number.
Lever Switches | Legend Plates | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lever Lg. | No. of Circuits Controlled | Switch Action | No. of Terminals | Position Designation | Message | Switching Current @ Voltage | Max. Voltage | Dia. | Dp. Behind Panel | Each | Message | Each | ||
3 Position for 10 mm Panel Cutout Dia. | ||||||||||||||
Changeover with Screw Terminals | ||||||||||||||
| 1 1/2" | 3 | Stays Switched (Maintained) | 9 | On-Off-On | 1-0-2 | 12 A @ 600 V AC | 600V AC 600V DC | 1 1/8" | 2 3/16" | 0000000 | 000000 | Hand-Off-Auto | 0000000 | 00000 |
| 1 3/4" | 3 | Stays Switched (Maintained) | 9 | On-Off-On | 1-0-2 | 50 A @ 600 V AC | 600V AC 600V DC | 1 1/8" | 3 15/16" | 0000000 | 000000 | Hand-Off-Auto | 0000000 | 00000 |
| 1 3/4" | 3 | Stays Switched (Maintained) | 9 | On-Off-On | 1-0-2 | 63 A @ 600 V AC | 600V AC 600V DC | 1 1/8" | 3 15/16" | 0000000 | 000000 | Hand-Off-Auto | 0000000 | 00000 |
| 1 13/16" | 3 | Stays Switched (Maintained) | 9 | On-Off-On | 1-0-2 | 20 A @ 600 V AC | 600V AC 600V DC | 1 1/8" | 2 1/4" | 0000000 | 00000 | Hand-Off-Auto | 0000000 | 0000 |
| 1 13/16" | 3 | Stays Switched (Maintained) | 9 | On-Off-On | 1-0-2 | 25 A @ 600 V AC | 600V AC 600V DC | 1 1/8" | 2 9/16" | 0000000 | 00000 | Hand-Off-Auto | 0000000 | 0000 |
Selector with Screw Terminals | ||||||||||||||
| 1 1/2" | 3 | Stays Switched (Maintained) | 9 | Off-On-On | 0-1-2 | 12 A @ 600 V AC | 600V AC 600V DC | 1 1/8" | 2 3/16" | 0000000 | 00000 | __ | 000000 | 00 |
| 1 13/16" | 3 | Stays Switched (Maintained) | 9 | Off-On-On | 0-1-2 | 20 A @ 600 V AC | 600V AC 600V DC | 1 1/8" | 2 1/4" | 0000000 | 00000 | __ | 000000 | 00 |
| 1 13/16" | 3 | Stays Switched (Maintained) | 9 | Off-On-On | 0-1-2 | 25 A @ 600 V AC | 600V AC 600V DC | 1 1/8" | 2 9/16" | 0000000 | 00000 | __ | 000000 | 00 |
Foot Switches
Keep your hands free for other tasks by triggering switches with your foot.
Back-pivot switches actuate with a tap of the toe.
For technical drawings and 3-D models, click on a part number.
| No. of Circuits Controlled | Switch Starting Position | Switch Action | Industry Designation | Switching Current @ Voltage | Housing Material | Wire Connection Type | No. of Terminals | Each | |
1 Speed | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Back Pivot with 3 Pedals | |||||||||
| 3 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 3 A @ 240 V AC | Aluminum | Screw Terminals | 9 | 0000000 | 0000000 |
Back Pivot with 3 Pedals and Guard | |||||||||
| 3 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 3 A @ 240 V AC | Aluminum | Screw Terminals | 9 | 0000000 | 000000 |
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.
For technical drawings and 3-D models, click on a part number.
Shaft | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| No. of Circuits Controlled | Switch Action | No. of Positions | No. of Terminals | Dp. Behind Panel | O'all Dia. | Lg. | Dia. | Each | ||
Nickel-Plated Brass with Black Plastic Knob | ||||||||||
With Solder Pin Terminals for 1/4" Panel Cutout Dia. | ||||||||||
| 1 | Stays Switched (Maintained) | 8 | 9 | 1 1/16" | 9/16" | 13/16" | 1/8" | 2 A @ 125 V AC, 1 A @ 30 V DC | 0000000 | 000000 |
DIN-Rail Mount Motor Voltage Monitors
Mount these monitors to 35 mm DIN rail. They protect electric motors from phase loss, phase reversal, overvoltage, undervoltage, and voltage imbalance. Also known as voltage-monitoring relays, they cut power to a motor when a fault occurs.
For technical drawings and 3-D models, click on a part number.
Switching | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Input Voltage Range | No. of Terminals | Control Power, W | Voltage Imbalance Adjustment | Trip Time, sec. | Reset Type | Current, A | Voltage | Horsepower @ Voltage | Ht. | Wd. | Specifications Met | Each | |
1 Circuit Controlled with 1 Off (Normally Open) or 1 On (Normally Closed)—SPDT | |||||||||||||
Three Phase | |||||||||||||
| 200-480V AC | 9 | 5 | 2%-10% | 1-30 | Automatic | 10 | 240V AC | 1/3 hp @ 240 V AC | 3" | 2" | UL Listed, C-UL Listed | 0000000 | 0000000 |
Latching Relays
A single, momentary input voltage switches these relays and latches them in position, so they don't require a constant input voltage to stay switched. A second momentary voltage will release the latch.
Relay sockets (sold separately) mount to 35 mm DIN rail (also known as DIN 3 rail) for fast installation.
Relays | Relay Sockets | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Terminals | Input Voltage | Control Current, mA | Switching Current @ 240V AC/24V DC | hp @ Switching Voltage | Ht. | Wd. | Dp. | Quick-Disconnect Tab Wd. | Each | Each | ||
2 Circuits Controlled with 2 Off (Normally Open) or 2 On (Normally Closed)—DPDT | ||||||||||||
| 9 | 24V AC | 70 | 10A | 1/3 hp @ 120 V AC 1/2 hp @ 240 V AC | 1.4" | 1.5" | 1.9" | 0.187" | 0000000 | 000000 | 0000000 | 000000 |
| 9 | 120V AC | 14 | 10A | 1/3 hp @ 120 V AC 1/2 hp @ 240 V AC | 1.4" | 1.5" | 1.9" | 0.187" | 0000000 | 00000 | 0000000 | 00000 |
| 9 | 12V DC | 100 | 10A | 1/3 hp @ 120 V AC 1/2 hp @ 240 V AC | 1.4" | 1.5" | 1.9" | 0.187" | 0000000 | 00000 | 0000000 | 00000 |
| 9 | 24V DC | 50 | 10A | 1/3 hp @ 120 V AC 1/2 hp @ 240 V AC | 1.4" | 1.5" | 1.9" | 0.187" | 0000000 | 00000 | 0000000 | 00000 |
Analog-Input Proportional-Control Relays
Often used to regulate the speed of AC fans or keep a heater at a set temperature, these relays connect directly to sensors to calculate and adjust output power. This allows you to use an analog input without converting it to a digital signal to control output power. They are solid state and have no moving parts, so they require less maintenance and last longer, are quieter, and switch faster than mechanical relays. IP20 rated, they have recessed terminals that prevent fingers and other objects from touching live circuits. An integrated heat sink disperses heat to increase the relay’s current rating. The LED indicator shows input voltage loss and internal relay faults, so you can easily check that your system is operating properly.
Mount them on 35 mm DIN rail (also known as DIN 3 rail) for fast installation. They also mount to flat surfaces.
All relays have phase-angle switching to accurately control all types of loads. This mode signals at non-zero voltage, which can produce electrical noise.
Single-phase relays can be set to switch every 1, 4, or 16 cycles. When used with infrared heaters, they have an option to switch at the half cycle and again at the full cycle. When switching at 16 cycles or at the half cycle, these relays have a soft-start option to increase the output slower in high-inrush current applications.
Relays with a potentiometer input can connect to an external potentiometer for manual control.
For technical drawings and 3-D models, click on a part number.
Input | Output | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Terminals | Voltage | No. of | Voltage | Current | No. of | Control Current, mA | Switching Current @ Voltage | Max. Switching Voltage | Ht. | Wd. | Dp. | Features | Each | |
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO | ||||||||||||||
Single Phase with Phase Angle Switching Mode | ||||||||||||||
| 9 | 0-10V DC | 1 | 85-265V AC | 30A | 1 | 50 | 30 A @ 230 V AC | 265V AC | 4.33" | 1.4" | 4.08" | Integrated Heat Sink, LED Indicator, Recessed Terminals, Potentiometer Input | 0000000 | 0000000 |
| 9 | 0-10V DC | 1 | 85-265V AC | 42A | 1 | 50 | 42 A @ 230 V AC | 265V AC | 4.33" | 1.4" | 4.08" | Integrated Heat Sink, LED Indicator, Recessed Terminals, Potentiometer Input | 0000000 | 000000 |
| 9 | 0-10V DC | 1 | 190-550V AC | 30A | 1 | 50 | 30 A @ 480 V AC | 550V AC | 4.33" | 1.4" | 4.08" | Integrated Heat Sink, LED Indicator, Recessed Terminals, Potentiometer Input | 0000000 | 000000 |
| 9 | 0-10V DC | 1 | 190-550V AC | 42A | 1 | 50 | 42 A @ 480 V AC | 550V AC | 4.33" | 1.4" | 4.08" | Integrated Heat Sink, LED Indicator, Recessed Terminals, Potentiometer Input | 0000000 | 000000 |