2 On (Normally Closed) Switches | McMaster-Carr

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186 Products

Electrical Power, Networking, and Controlling

Pull-Chain Switches

Pull-Chain Switches

Pull a chain to send a signal, such as for turning on and off lights and fans

Emergency Stop Switches

Emergency Stop Switches

Cut power to equipment during emergencies

Switch Contact Blocks

Switch Contact Blocks

Mount to switches to control electrical circuits as you move the switch

Safety Switches

Safety Switches

Protect people by cutting power to machines when access doors open; also known as interlock switches

Push-Button Switches

Push-Button Switches

Our most common switch type actuates circuits with the push of a button

Limit Switches

Turn equipment on or off when objects touch the actuator; often used for conveyors and bin filling

Magnetic Switches

Magnetic Switches

Actuate when a magnet comes within sensing distance; often used to detect when doors or windows open

Proximity Sensors

Proximity Sensors

Detect the presence or position of objects from a short sensing distance

Safety Relays

Monitor circuits and force machines to a safe stop if the relay detects a fault

Fluid Handling

Pressure Switches

Pressure Switches

Activate controls, set off alarms, and power equipment when a set pressure is reached

Temperature Switches

Temperature Switches

Turn heating equipment on or off at a specified temperature

Building and Machinery Hardware

T-Slotted Framing Switches

T-Slotted Framing Switches

Attach to your rail to actuate components or cut power

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)