Choosing an Electrical Switch
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Magnetically Actuated Switches
These switches actuate when a magnet comes within sensing distance, and reset when the magnet moves away. They’re often used to detect when a door or window opens. Mount the switch in a stationary position, such as a door frame, and mount the magnet to a movable object, such as the door. They do not include a safety relay and cannot be used with safety-guard doors found on machinery.
Switches with a plug connect to cables with a socket (sold separately), allowing you to quickly connect and disconnect the switch.
Switches with an LED status indicator let you visually confirm that it’s connected and whether it’s actuated.
IP69 rated switches resist high temperature washdowns and dust.
Micro
M12 Plug
Switches | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Wire Leads | Replacement Magnets | |||||||||||||||
| No. of Circuits Controlled | Switch Starting Position | Industry Designation | Switching Current @ Voltage | Max. Voltage  | Max. Sensing Distance | No. of | Lg., ft. | Lg. | Wd. | Ht. | Environmental Rating | Each | Each | |||
Stainless Steel Housing | ||||||||||||||||
With Wire Leads and LED Status Indicator | ||||||||||||||||
| L | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | 3PST-1NO/2NC | 10 mA @ 24 V DC | 24V DC | 0.31" | 6 | 10 | 3.46" | 1.06" | 0.55" | IP69 | 000000000 | 0000000 | 000000000 | 000000 |
With 8-Pole Micro M12 Plug and LED Status Indicator | ||||||||||||||||
| L | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | 3PST-1NO/2NC | 10 mA @ 30 V AC, 10 mA @ 30 V DC | 30V AC/30V DC | 0.31" | __ | __ | 3.46" | 1.06" | 0.55" | IP69 | 000000000 | 000000 | 000000000 | 00000 |
| No. of Poles | Cable Lead Lg., ft. | Environmental Rating | Each | |
Micro M12 Socket × Wire Leads | ||||
|---|---|---|---|---|
| 8 | 9.5 | IP66K, IP67 | 0000000 | 000000 |
Tamper-Resistant Magnetically Actuated Switches
Prevent unauthorized use—these switches require coded magnets (sold separately) to actuate, and cannot be bypassed using ordinary magnets. They actuate when a magnet comes within sensing distance, and reset when the magnet moves away. Mount the switch in a stationary position, such as a door frame, and mount the magnet to a movable object, such as the door. They’re often used to detect when a door or window opens, and can be used with movable machine guards. All are rated IP67 for protection from temporary submersion.
Switches with an LED status indicator light up when they’re actuated, so you can see if they’re wired correctly with a quick glance.
Coded magnets include tamper-resistant one-way screws for mounting. To remove screws, see one-way bits and drivers.
Safety relays are required in safety applications with switches that control two or three circuits.
Switches | Cables with Socket | Coded Magnets | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Circuits Controlled | Switch Starting Position | Industry Designation | Switching Current @ Voltage | Max. Voltage | Input Voltage | Max. Sensing Distance | Lg. | Wd. | Ht. | Environmental Rating | Each | Each | Each | ||||
Plastic Housing with Wire Leads | |||||||||||||||||
| B | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | 3PST-1NO/2NC | 10 mA @ 24 V DC | 24V DC | 24V DC | 0.2" | 3.5" | 1" | 0.5" | IP67 | 0000000 | 0000000 | 000000 | 00 | 0000000 | 000000 |
Plastic Housing with Wire Leads and LED Status Indicator | |||||||||||||||||
| B | 2 | 1 Off (Normally Open) and 1 On (Normally Closed) | DPST-1NO/1NC | 10 mA @ 24 V DC | 24V DC | 24V DC | 0.2" | 3.5" | 1" | 0.5" | IP67 | 0000000 | 000000 | 000000 | 00 | 0000000 | 00000 |
Plastic Housing with 4-Pole Nano M8 Plug and LED Status Indicator | |||||||||||||||||
| B | 2 | 1 Off (Normally Open) and 1 On (Normally Closed) | DPST-1NO/1NC | 10 mA @ 24 V DC | 24V DC | 24V DC | 0.2" | 3.5" | 1" | 0.5" | IP67 | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 |
| B | 3 | 1 Off (Normally Open) and 2 On (Normally Closed) | 3PST-1NO/2NC | 10 mA @ 24 V DC | 24V DC | 24V DC | 0.2" | 3.5" | 1" | 0.5" | IP67 | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 |