Choosing an Electrical Switch
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Snap-Acting Switches
Open and close circuits in a snap. These switches actuate quickly to minimize arcing and prevent contacts from sticking. They’re often used to indicate that an appliance or enclosure door is open. You can also use them inside limit, pressure, and temperature switches.
Switches with a roller plunger or cross roller plunger actuator have a roller that moves when an object pushes the actuator. This reduces friction to limit wear and tear on your switch. On cross roller plungers, the roller moves perpendicular to the housing.
Plastic covers (sold separately) are compatible with switches with screw terminals. They fit over the bottom of the switch to prevent contact with live terminals.
For technical drawings and 3-D models, click on a part number.
Switches | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Housing | Plastic Covers | ||||||||||||||||
| No. of Circuits Controlled | Switch Starting Position | Switch Action | Industry Designation | Switching Current @ Voltage | Max. Voltage  | Horsepower @ Switching Voltage | Operating Temp. Range, °F | Actuator Ht. | No. of Terminals | Lg. | Ht. | Dp. | Each | Each | |||
Cross Roller Plunger Actuator Style for 1/2" Panel Cutout Dia. | |||||||||||||||||
With Screw Terminals | |||||||||||||||||
| E | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 15 A @ 250 V AC, 0.5 A @ 125 V DC | 480V AC 250V DC | 1/4 hp @ 250 V AC | -67° to 185° | 1.4" | 3 | 1.94" | 0.95" | 0.69" | 0000000 | 000000 | 0000000 | 00000 |
| E | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 20 A @ 250 V AC, 0.5 A @ 125 V DC | 480V AC 250V DC | 2 hp @ 250 V AC | -67° to 250° | 1.4" | 3 | 1.94" | 0.95" | 0.69" | 0000000 | 00000 | 0000000 | 0000 |
With Tab Terminals | |||||||||||||||||
| E | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 15 A @ 250 V AC, 15 A @ 8 V DC | 500V AC 250V DC | __ | -13° to 176° | 1.3" | 3 | 1.94" | 0.95" | 0.69" | 0000000 | 00000 | 000000 | 00 |
Enclosed Washdown Snap-Acting Switches
Rated NEMA 4 and IP66, these enclosed switches have a sealed actuator for protection from washdowns. They open and close circuits quickly to minimize arcing and prevent contacts from sticking.
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 | Horsepower @ Switching Voltage | Operating Temp. Range, °F | Actuator Ht. | Wire Connection Type | No. of Terminals | Lg. | Ht. | Dp. | Conduit Trade Size | Each | ||
Side Mount | |||||||||||||||||
Cross Roller Plunger Actuator Style | |||||||||||||||||
| C | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 15 A @ 250 V AC, 0.5 A @ 125 V DC | 600V AC 250V DC | 1/4 hp @ 250 V AC | -25° to 160° | 1.6" | Screw Terminals | 3 | 1" | 1.75" | 3.04" | 1/2 | 0000000 | 0000000 |
Enclosed Snap-Acting Switches
Enclosures protect these snap-acting switches from the environment. 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 an internal component in limit, pressure, and temperature switches.
Switches with a roller plunger, cross roller plunger, or roller lever actuator allow parts to glide across the actuation surface with less friction than standard plungers or 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 | Horsepower @ Switching Voltage | Operating Temp. Range, °F | Actuator Ht. | Wire Connection Type | No. of Terminals | Lg. | Ht. | Dp. | Conduit Trade Size | Each | ||
Side Mount | |||||||||||||||||
Cross Roller Plunger Actuator Style | |||||||||||||||||
| E | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 15 A @ 250 V AC, 0.5 A @ 125 V DC | 600V AC 250V DC | 1/4 hp @ 250 V AC | -25° to 160° | 1.2" | Screw Terminals | 3 | 3.04" | 1.75" | 1" | 1/2 | 0000000 | 0000000 |
Low-Profile Wet-Location Limit Switches
Stack these slim switches together, or fit them into tight spaces. They're rated IP67 for protection from temporary submersion. When an object in motion comes into contact with the actuator, it sends a signal to open or close a circuit. They’re often used on conveyor systems and elevators.
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 Wire Leads | Cable Lead Lg., ft. | Lg. | Ht. | Dp. | Housing Material | Each | ||
Cross Roller Plunger Actuator Style | ||||||||||||||||
With Wire Leads | ||||||||||||||||
| C | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 5 A @ 250 V AC, 4 A @ 30 V DC | 250V DC 250V AC | 14° to 158° | 0.6" | 4 | 9.5 | 1.6" | 2" | 0.6" | Aluminum | 0000000 | 0000000 |
Sealed Wet-Location Limit Switches
Sealed actuators prevent these switches from jamming, even when exposed to sand, mud, or dirt. They're rated IP67 for temporary submersion. They have a slim design and can be stacked together or fit into narrow spaces. When an object in motion comes into contact with the actuator, it sends a signal to open or close a circuit. They're often used on conveyor systems and elevators.
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. | Wire Connection Type | No. of Wire Leads | Cable Lead Lg., ft. | Lg. | Ht. | Dp. | Housing Material | Each | ||
Cross Roller Plunger Actuator Style | |||||||||||||||||
| D | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 5 A @ 250 V AC, 4 A @ 30 V DC | 250V DC 250V AC | 14° to 158° | 1" | Wire Leads | 4 | 9.5 | 1.3" | 1.9" | 0.6" | Aluminum | 0000000 | 0000000 |
Limit Switches
Often used on conveyor systems and bin filling operations, these switches have the rapid-closing action of a snap-acting switch, but have a larger actuator for large objects. When an object in motion comes into contact with the actuator, it sends a signal to open or close a circuit. All are rated IP67 and NEMA 13 for protection from corrosion, oil/coolant spraying, and temporary submersion.
For technical drawings and 3-D models, click on a part number.
Housing | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Style | No. of Circuits Controlled | Switch Starting Position | Switch Action | Industry Designation | Switching Current @ Voltage | Max. Voltage | Operating Temp. Range, °F | Actuator Ht. | Wire Connection Type | No. of Terminals | For Max. Cable OD | Lg. | Ht. | Dp. | Housing Material | Each | |
Cross Roller Plunger Actuator Style | |||||||||||||||||
| G | 1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 380 V AC, 220 V DC | 380V AC 220V DC | -4° to 158° | 1.5" | Screw Terminals | 4 | 0.25" | 1.1" | 2.5" | 1" | Zinc | 000000 | 000000 |