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.
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 |
| 2 | Stays Switched (Maintained) | 4 | 10 | 1 1/16" | 9/16" | 13/16" | 1/8" | 2 A @ 125 V AC, 1 A @ 30 V DC | 0000000 | 00000 |
Subminiature Wet-Location Snap-Acting Switches
Built for tight spaces exposed to water, these switches have a housing that's less than 1" long and IP67 rated for protection from temporary submersion. They open and close circuits quickly to minimize arcing and prevent contacts from sticking. They’re often used as door-open indicators on appliances and enclosures or as internal components in limit, pressure, and temperature switches.
Switches with a plunger actuator require a push to actuate.
Switches with a lever actuator have an arm that increases the size of the actuation surface.
Switches with a roller lever actuator allow parts to glide across the actuation surface with less friction than standard levers. This prevents wear and tear over time.
For technical drawings and 3-D models, click on a part number.
Housing | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Circuits Controlled | Switch Starting Position | Switch Action | Industry Designation | Switching Current @ Voltage | Max. Voltage | Operating Temp. Range, °F | Actuator Ht. | No. of Terminals | Lg. | Ht. | Dp. | Lever Lg. | Each | |
Plunger Actuator Style | ||||||||||||||
With Solder Pin Terminals | ||||||||||||||
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 0.1 A @ 125 V AC | 125V AC | -40° to 185° | 0.051" | 3 | 0.78" | 0.42" | 0.25" | __ | 00000000 | 00000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 3 A @ 125 V AC, 2 A @ 250 V AC | 250V AC | -40° to 185° | 0.051" | 3 | 0.78" | 0.42" | 0.25" | __ | 00000000 | 0000 |
Lever Actuator Style | ||||||||||||||
With Solder Pin Terminals | ||||||||||||||
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 0.1 A @ 125 V AC | 125V AC | -40° to 185° | 0.189" | 3 | 0.78" | 0.42" | 0.23" | 0.57" | 00000000 | 0000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 3 A @ 125 V AC, 2 A @ 250 V AC | 250V AC | -40° to 185° | 0.189" | 3 | 0.78" | 0.42" | 0.25" | 0.57" | 00000000 | 0000 |
Roller Lever Actuator Style | ||||||||||||||
With Solder Pin Terminals | ||||||||||||||
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 0.1 A @ 125 V AC | 125V AC | -40° to 185° | 0.362" | 3 | 0.78" | 0.42" | 0.25" | 0.57" | 00000000 | 0000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 3 A @ 125 V AC, 2 A @ 250 V AC | 250V AC | -40° to 185° | 0.362" | 3 | 0.78" | 0.42" | 0.25" | 0.57" | 00000000 | 0000 |
Subminiature Snap-Acting Switches
At least 25% smaller than our Miniature Snap-Acting Switches, these switches are often used to trigger actions from inside a vehicle’s door or an engine compartment. They open and close circuits faster than other switches, preventing contacts from sticking by reducing the time that they're near one another. They also minimize the chance of arcing, so electricity won’t jump across contacts.
Plunger actuator switches send a signal when the actuator is pushed directly downward. They have the smallest actuator of the actuators here, reducing the risk of accidental switching.
Lever actuator switches have a larger surface area than plunger actuator switches and can be pushed down by front-to-back movement, so they require less precision to activate.
Roller lever actuator switches allow parts to glide across the actuation surface with less friction than standard levers. This prevents wear and tear over time.
Simulated roller lever actuator switches have a curved arm that can be pressed down for actuation by forward, backward, and repeated back-and-forth movement.
For technical drawings and 3-D models, click on a part number.
Housing | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Circuits Controlled | Switch Starting Position | Switch Action | Industry Designation | Switching Current @ Voltage | Max. Voltage | Operating Temp. Range, °F | Actuator Ht. | No. of Terminals | Lg. | Ht. | Dp. | Lever Lg. | Environmental Rating | Each | |
Plunger Actuator Style | |||||||||||||||
With Solder Pin Terminals | |||||||||||||||
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 0.1 A @ 125 V AC | 125V AC | -10° to 185° | 0.03" | 3 | 0.78" | 0.35" | 0.25" | __ | IP40 | 00000000 | 00000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 5 A @ 125 V AC | 250V AC | -10° to 185° | 0.03" | 3 | 0.78" | 0.35" | 0.25" | __ | IP40 | 00000000 | 0000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 250 V AC | 250V AC | -10° to 185° | 0.03" | 3 | 0.78" | 0.35" | 0.25" | __ | IP40 | 00000000 | 0000 |
Lever Actuator Style | |||||||||||||||
With Solder Pin Terminals | |||||||||||||||
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 0.1 A @ 125 V AC | 125V AC | -10° to 185° | 0.26" | 3 | 0.78" | 0.35" | 0.25" | 0.57" | IP40 | 00000000 | 0000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 5 A @ 125 V AC | 250V AC | -10° to 185° | 0.26" | 3 | 0.78" | 0.35" | 0.25" | 0.57" | IP40 | 00000000 | 0000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 250 V AC | 250V AC | -10° to 185° | 0.26" | 3 | 0.78" | 0.35" | 0.25" | 0.57" | IP40 | 00000000 | 0000 |
Roller Lever Actuator Style | |||||||||||||||
With Solder Pin Terminals | |||||||||||||||
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 0.1 A @ 125 V AC | 125V AC | -10° to 185° | 0.48" | 3 | 0.78" | 0.35" | 0.25" | 0.57" | IP40 | 00000000 | 0000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 5 A @ 125 V AC | 250V AC | -10° to 185° | 0.48" | 3 | 0.78" | 0.35" | 0.25" | 0.57" | IP40 | 00000000 | 0000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 250 V AC | 250V AC | -10° to 185° | 0.48" | 3 | 0.78" | 0.35" | 0.25" | 0.57" | IP40 | 00000000 | 0000 |
Simulated Roller Lever Actuator Style | |||||||||||||||
With Solder Pin Terminals | |||||||||||||||
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 0.1 A @ 125 V AC | 125V AC | -10° to 185° | 0.34" | 3 | 0.78" | 0.35" | 0.25" | 0.62" | IP40 | 00000000 | 0000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 5 A @ 125 V AC | 250V AC | -10° to 185° | 0.34" | 3 | 0.78" | 0.35" | 0.25" | 0.62" | IP40 | 00000000 | 0000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 250 V AC | 250V AC | -10° to 185° | 0.34" | 3 | 0.78" | 0.35" | 0.25" | 0.62" | IP40 | 00000000 | 0000 |
Light-Touch Subminiature Snap-Acting Switches
Actuate these switches with a fraction of the force of other subminiature switches for increased responsiveness. They’re a good choice if you need reliable actuation even from a light touch. Among the smallest snap-acting switches we offer, they fit into the tiniest of spaces. To minimize arcing and prevent contacts from sticking, they open and close circuits quickly. They’re often used as door-open indicators on enclosures or as internal components in limit, pressure, and temperature switches.
Switches with a plunger actuator require a push to actuate.
For technical drawings and 3-D models, click on a part number.
Housing | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Circuits Controlled | Switch Starting Position | Switch Action | Industry Designation | Switching Current @ Voltage | Max. Voltage | Operating Temp. Range, °F | Actuator Ht. | No. of Terminals | Lg. | Ht. | Dp. | Each | |
Plunger Actuator Style | |||||||||||||
With Solder Pin Terminals | |||||||||||||
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 1 A @ 125 V AC, 1 A @ 30 V DC | 250V AC | -65° to 250° | 0.09" | 3 | 0.78" | 0.36" | 0.25" | 00000000 | 000000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 5 A @ 250 V AC | 250V AC | -65° to 250° | 0.09" | 3 | 0.78" | 0.36" | 0.25" | 00000000 | 00000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 11 A @ 125 V AC, 11 A @ 250 V AC | 250V AC | -65° to 250° | 0.1" | 3 | 0.78" | 0.36" | 0.25" | 00000000 | 00000 |
Ultra-Miniature Snap-Acting Switches
Trigger actions in devices as small as phones and drones. The smallest snap-acting switches we offer, these switches fit into the tiniest of spaces and help keep weight to a minimum. Because snap-acting switches open and close circuits faster than other switches—reducing the time that contacts are near one another—they prevent contacts from sticking. They also minimize the chance of arcing, so electricity won’t jump across contacts.
Plunger actuator switches send a signal when the actuator is pushed directly downward. They have a small footprint, reducing the risk of accidental switching.
Lever actuator switches have a larger surface area than plunger actuator switches and can be pushed down by front-to-back movement, so they require less precision to activate.
Simulated roller lever actuator switches have a curved arm that can be pressed down for actuation by forward, backward, and repeated back-and-forth movement.
For technical drawings and 3-D models, click on a part number.
Housing | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Circuits Controlled | Switch Starting Position | Switch Action | Industry Designation | Switching Current @ Voltage | Max. Voltage | Operating Temp. Range, °F | Actuator Ht. | No. of Terminals | Lg. | Ht. | Dp. | Lever Lg. | Environmental Rating | Pkg. Qty. | Pkg. | |
Plunger Actuator Style | ||||||||||||||||
With Solder Pin Terminals | ||||||||||||||||
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 0.3 A @ 30 V DC | 30V DC | -40° to 185° | 0.1" | 3 | 0.58" | 0.35" | 0.21" | __ | IP67 | 5 | 0000000 | 000000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 3 A @ 250 V AC | 250V AC | -40° to 185° | 0.05" | 3 | 0.5" | 0.26" | 0.23" | __ | IP40 | 5 | 0000000 | 0000 |
| 2 | 1 Off (Normally Open) and 1 On (Normally Closed) | Springs Back (Momentary) | DPST-1NO/1NC | 5 A @ 250 V AC | 250V AC | -40° to 185° | 0.07" | 4 | 0.7" | 0.37" | 0.2" | __ | IP40 | 1 | 0000000 | 00000 |
Lever Actuator Style | ||||||||||||||||
With Solder Pin Terminals | ||||||||||||||||
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 0.3 A @ 30 V DC | 30V DC | -40° to 185° | 0.11" | 3 | 0.58" | 0.35" | 0.21" | 0.56" | IP67 | 5 | 0000000 | 00000 |
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 3 A @ 250 V AC | 250V AC | -40° to 185° | 0.17" | 3 | 0.5" | 0.26" | 0.23" | 0.49" | IP40 | 5 | 0000000 | 0000 |
Simulated Roller Lever Actuator Style | ||||||||||||||||
With Solder Pin Terminals | ||||||||||||||||
| 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 3 A @ 250 V AC | 250V AC | -40° to 185° | 0.17" | 3 | 0.5" | 0.26" | 0.23" | 0.48" | IP40 | 5 | 0000000 | 00000 |
Circuit Board Relays
Smaller than relays with electrical wiring, these relays fit in compact devices. Mount them through holes on circuit boards with their solder pin terminals. Use them to control heaters, fans, and other high-power components from a low-power circuit.
Solid state relays have no moving parts, so they require less maintenance and last longer, switch faster, and are quieter than mechanical relays.
For technical drawings and 3-D models, click on a part number.
| Number of Terminals | Input Voltage | Control Current, mA | Switching Current @ Voltage | Max. Switching Voltage | Mechanical Life Cycles | Ht. | Wd. | Dp. | Pin Lg. | Each | |
Mechanical | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
1 Circuit Controlled with 1 Off (Normally Open) or 1 On (Normally Closed)—SPDT | |||||||||||
| 5 | 12V AC, 12V DC | 14 | 6 A @ 240 V AC | 250V AC | 10,000,000 | 1.1" | 0.2" | 0.6" | 0.14" | 0000000 | 00000 |
| 5 | 24V AC, 24V DC | 12 | 6 A @ 240 V AC | 250V AC | 10,000,000 | 1.1" | 0.2" | 0.6" | 0.14" | 0000000 | 0000 |
| 5 | 120V AC | 8.4 | 10 A @ 240 V AC | 250V AC | 10,000,000 | 1.1" | 0.5" | 1" | 0.21" | 0000000 | 0000 |
| 5 | 5V DC | 106 | 10 A @ 240 V AC/30 V DC | 380V AC/125V DC | 10,000,000 (AC Voltage) 20,000,000 (DC Voltage) | 1.1" | 0.5" | 1" | 0.16" | 0000000 | 0000 |
| 5 | 12V DC | 44 | 10 A @ 240 V AC/30 V DC | 380V AC/125V DC | 10,000,000 (AC Voltage) 20,000,000 (DC Voltage) | 1.1" | 0.5" | 1" | 0.16" | 0000000 | 0000 |
| 5 | 24V DC | 22 | 10 A @ 240 V AC/30 V DC | 380V AC/125V DC | 10,000,000 (AC Voltage) 20,000,000 (DC Voltage) | 1.1" | 0.5" | 1" | 0.16" | 0000000 | 0000 |
| 5 | 60V DC | 3 | 6 A @ 240 V AC | 250V AC | 10,000,000 | 1.1" | 0.2" | 0.6" | 0.14" | 0000000 | 0000 |
| 8 | 12V DC | 33 | 16 A @ 240 V AC | 250V AC | 10,000,000 | 1.1" | 0.5" | 0.6" | 0.1" | 0000000 | 0000 |
| 8 | 110V DC | 4.5 | 16 A @ 240 V AC | 250V AC | 10,000,000 | 1.1" | 0.5" | 0.6" | 0.1" | 0000000 | 0000 |
2 Circuits Controlled with 2 Off (Normally Open)—DPST-NO | |||||||||||
| 6 | 12V DC | 141 | 50 A @ 400 V AC | 400V AC | 1,000,000 | 2" | 1.3" | 2.3" | 0.18" | 0000000 | 00000 |
| 14 | 12V DC | 240 | 100 A @ 400 V AC | 400V AC | 1,000,000 | 2.1" | 2.1" | 2.3" | 0.18" | 0000000 | 00000 |
| 14 | 24V DC | 120 | 100 A @ 400 V AC | 400V AC | 1,000,000 | 2.1" | 2.1" | 2.3" | 0.18" | 0000000 | 00000 |
2 Circuits Controlled with 2 Off (Normally Open) or 2 On (Normally Closed)—DPDT | |||||||||||
| 8 | 120V AC | 8.4 | 8 A @ 240 V AC | 250V AC | 10,000,000 | 1.1" | 0.5" | 1" | 0.21" | 0000000 | 00000 |
| 8 | 5V DC | 106 | 5 A @ 240 V AC/30 V DC | 380V AC/125V DC | 10,000,000 (AC Voltage) 20,000,000 (DC Voltage) | 1.1" | 0.5" | 1" | 0.16" | 0000000 | 0000 |
| 8 | 12V DC | 44 | 5 A @ 240 V AC/30 V DC | 380V AC/125V DC | 10,000,000 (AC Voltage) 20,000,000 (DC Voltage) | 1.1" | 0.5" | 1" | 0.16" | 0000000 | 0000 |
| 8 | 24V DC | 22 | 5 A @ 240 V AC/30 V DC | 380V AC/125V DC | 10,000,000 (AC Voltage) 20,000,000 (DC Voltage) | 1.1" | 0.5" | 1" | 0.16" | 0000000 | 0000 |
| 8 | 110V DC | 4.5 | 8 A @ 240 V AC | 250V AC | 10,000,000 | 1.1" | 0.5" | 0.6" | 0.1" | 0000000 | 0000 |
3 Circuits Controlled with 3 Off (Normally Open)—3PST-NO | |||||||||||
| 8 | 12V DC | 224 | 50 A @ 400 V AC | 400V AC | 1,000,000 | 2" | 1.3" | 2.3" | 0.18" | 0000000 | 00000 |
| 8 | 24V DC | 71 | 50 A @ 400 V AC | 400V AC | 1,000,000 | 2" | 1.3" | 2.3" | 0.18" | 0000000 | 00000 |
Solid State | |||||||||||
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO | |||||||||||
| 4 | 24V DC | 7 | 2 A @ 240 V AC | 250V AC | __ | 1.1" | 0.2" | 0.6" | 0.14" | 0000000 | 00000 |
| 4 | 24V DC | 7 | 6 A @ 24 V DC | 24V DC | __ | 1.1" | 0.2" | 0.6" | 0.14" | 0000000 | 00000 |
| 4 | 60V DC | 3.5 | 2 A @ 240 V AC | 250V AC | __ | 1.1" | 0.2" | 0.6" | 0.14" | 0000000 | 00000 |
| 4 | 60V DC | 7 | 6 A @ 24 V DC | 24V DC | __ | 1.1" | 0.2" | 0.6" | 0.14" | 0000000 | 00000 |
Circuit Board Safety Relays
Reduce connection errors on circuit boards that control machine guards and other safety devices. Also known as force-guided contact relays, they have contacts that won’t close at the same time, causing contacts to stick or weld shut. These relays take up less space on a board than those with electrical wiring because their solder pin terminals mount directly through circuit board holes. Use them to control high-power components, such as fans and heaters, from a low-power circuit.
For technical drawings and 3-D models, click on a part number.
| Number of Terminals | Input Voltage | Control Current, mA | Switching Current @ Voltage | Max. Switching Voltage | Mechanical Life Cycles | Ht. | Wd. | Dp. | Pin Lg. | Each | |
2 Circuits Controlled with 2 Off (Normally Open) or 2 On (Normally Closed)—DPDT | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 8 | 24V DC | 29 | 8 A @ 240 V AC | 250V AC | 10,000,000 | 1.1" | 0.5" | 1" | 0.2" | 0000000 | 000000 |