Choosing an Electrical Switch
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Ultra-Precision Limit Switches
These switches actuate with the slightest push for a high degree of accuracy. They’re often used for determining manufacturing tolerances and detecting minute expansions and contractions.
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 | Max. Voltage | Operating Temp. Range, °F | Actuator Ht., mm | Wire Connection Type | No. of Wire Leads | Cable Lead Lg., ft. | Housing Ht., mm | Housing Material | Actuator Material | Mounting Thread Size | Environmental Rating | Each | |
1 | 1 On (Normally Closed) | Springs Back (Momentary) | SPST-NC | 50 mA @ 24 V AC, 2 mA @ 15 V DC | 24V AC 15V DC | -4° to 167° | 11.5 | Wire Leads | 2 | 2 1/2 | 10 | Nickel-Plated Brass | Zirconium Ceramic | M8 | IP50 | 0000000 | 0000000 |
Panel-Mount Sealed Wet-Location Limit Switches
Sealed actuators prevent these switches from jamming, even when exposed to oil, sand, mud, or ice. They send a signal to your circuit when an object hits the actuator—for instance, a box on a conveyor runs into the switch, stopping the conveyor. They open and close circuits as fast as snap-acting switches, but they have a bigger actuator for large objects. To actuate, they require a push, similar to a button. Rated IP68, they’re protected against dust and temporary submersion.
Switches with a stainless steel housing stand up better to wear and tear and corrosion better than switches with a zinc-plated steel housing.
Wire Leads | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | Lg. | Housing Ht. | Mounting Thread Size | Each | |
Zinc-Plated Steel Housing | ||||||||||||||
1 | 1 Off (Normally Open) | Springs Back (Momentary) | SPST-NO | 5 A @ 28 V DC | 28V DC | -50° to 205° | 0.13" | Wire Leads | 2 | 24" | 1.2" | 9/16"-18 | 0000000 | 000000 |
1 | 1 On (Normally Closed) | Springs Back (Momentary) | SPST-NC | 5 A @ 28 V DC | 28V DC | -50° to 205° | 0.13" | Wire Leads | 2 | 24" | 1.2" | 9/16"-18 | 0000000 | 000000 |
Stainless Steel Housing | ||||||||||||||
1 | 1 Off (Normally Open) | Springs Back (Momentary) | SPST-NO | 5 A @ 28 V DC | 28V DC | -50° to 205° | 0.16" | Wire Leads | 2 | 24" | 1.5" | 5/8"-18 | 00000000 | 000000 |
1 | 1 On (Normally Closed) | Springs Back (Momentary) | SPST-NC | 5 A @ 28 V DC | 28V DC | -50° to 205° | 0.16" | Wire Leads | 2 | 24" | 1.5" | 5/8"-18 | 00000000 | 000000 |
Panel-Mount Low-Profile Wet-Location Limit Switches
Secure these switches into panels using mounting nuts. They have a slim body so they can also be stacked together or fit 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. All have a 4-pole micro M12 plug that connects to cables with a socket (sold separately), allowing you to quickly connect and disconnect the switch.
For technical drawings and 3-D models, click on a part number.
Housing | |||||||||||||||
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No. of Circuits Controlled | Switch Starting Position | Switch Action | Industry Designation | Switching Current @ Voltage | Max. Voltage | Operating Temp. Range, °F | Actuator Ht. | Plug Type | Lg. | Ht. | Dp. | Housing Material | For Panel Cutout Dia. | Each | |
Plunger Actuator Style | |||||||||||||||
1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 1 A @ 125 V AC | 125V AC | 14° to 158° | 0.8" | 4-Pole Micro M12 | 1.6" | 2.2" | 0.6" | Aluminum | 0.57" | 0000000 | 0000000 |
Roller Plunger Actuator Style | |||||||||||||||
1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 1 A @ 125 V AC | 125V AC | 14° to 158° | 1" | 4-Pole Micro M12 | 1.6" | 2.2" | 0.6" | Aluminum | 0.57" | 0000000 | 000000 |
Cable with Socket | 0000000 | Each | 000000 |
Ultra-Precision Wet-Location Limit Switches
These switches actuate with the slightest push for a high degree of accuracy. All are rated IP67 for protection from wet locations and temporary submersion. They’re often used for determining manufacturing tolerances and detecting minute expansions and contractions.
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 | Max. Voltage | Operating Temp. Range, °F | Actuator Ht., mm | Wire Connection Type | No. of Wire Leads | Cable Lead Lg., ft. | Housing Ht., mm | Housing Material | Actuator Material | Mounting Thread Size | Each | |
1 | 1 On (Normally Closed) | Springs Back (Momentary) | SPST-NC | 50 mA @ 24 V AC, 2 mA @ 15 V DC | 24V AC 15V DC | -4° to 167° | 4 | Wire Leads | 2 | 2.5 | 21 | Nickel-Plated Brass | Ruby | M8 | 0000000 | 0000000 |
Snap-Acting Switches
Open and close circuits quickly to minimize arcing and prevent contacts from sticking. These switches are often used as door-open indicators on appliances and enclosures or as an internal component in limit, pressure, and temperature switches.
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.
Housing | ||||||||||||||||
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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. | Environmental Rating | Each | ||
Plunger Actuator Style for 1/2" Panel Cutout Dia. | ||||||||||||||||
With Screw Terminals | ||||||||||||||||
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 | 480V AC 250V DC | 1/4 hp @ 250 V AC | -67° to 185° | 0.9" | 3 | 1.94" | 0.95" | 0.69" | __ | 0000000 | 000000 |
C | 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 185° | 0.9" | 3 | 1.94" | 0.95" | 0.69" | __ | 0000000 | 00000 |
With Solder Lugs | ||||||||||||||||
C | 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° | 0.9" | 3 | 1.94" | 0.95" | 0.69" | NEMA 1 | 0000000 | 00000 |
Roller Plunger Actuator Style for 1/2" Panel Cutout Dia. | ||||||||||||||||
With Screw Terminals | ||||||||||||||||
D | 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 | 00000 |
D | 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 185° | 1.4" | 3 | 1.94" | 0.95" | 0.69" | __ | 0000000 | 00000 |
With Solder Lugs | ||||||||||||||||
D | 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" | NEMA 1 | 0000000 | 00000 |
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 | 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 |
With Solder Lugs | ||||||||||||||||
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" | NEMA 1 | 0000000 | 00000 |
Plastic Cover for Switches with Screw Terminals | 0000000 | Each | 00000 |
Enclosed Wet-Location Snap-Acting Switches
Rated IP67, these switches have an enclosure that shields their interior during temporary submersion. They open and close circuits quickly to minimize arcing and keep contacts from sticking. These switches are often used as door-open indicators on enclosures or as an internal component in limit, pressure, and temperature switches.
All switches are actuated by pushing a plunger. Switches with a roller plunger actuator allow parts to glide across the actuation surface with less friction than standard plungers.
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 | Lg. | Ht. | Dp. | Each | |
Plunger Actuator Style for 9/16" Panel Cutout Dia. | |||||||||||||
With 39" Wire Leads | |||||||||||||
1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 250 V AC, 0.5 A @ 125 V DC | 250V AC 250V DC | 15° to 175° | 0.68" | 3 | 0.85" | 1.61" | 2.76" | 0000000 | 0000000 |
Roller Plunger Actuator Style for 9/16" Panel Cutout Dia. | |||||||||||||
With 39" Wire Leads | |||||||||||||
1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 250 V AC, 0.5 A @ 125 V DC | 250V AC 250V DC | 15° to 175° | 1.04" | 3 | 0.85" | 1.61" | 2.76" | 0000000 | 000000 |
With 9 ft. Wire Leads | |||||||||||||
1 | 1 Off (Normally Open) or 1 On (Normally Closed) | Springs Back (Momentary) | SPDT | 10 A @ 250 V AC, 0.5 A @ 125 V DC | 250V AC 250V DC | 15° to 175° | 1.04" | 3 | 0.85" | 1.61" | 2.76" | 0000000 | 000000 |
Panel-Mount Switch Size Adapters
Install 22 mm panel-mount switches into 30 mm cutouts.
For technical drawings and 3-D models, click on a part number.
For Panel Cutout Diameter | Material | Each | |
22 mm (7/8") to 30 mm (1 3/16") | Metal | 0000000 | 000000 |