8A Switches | McMaster-Carr

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115 Products

Switches

Mil. Spec. Washdown Toggle Switches

These switches meet MIL-S-3950.

High-Current Toggle Switches

Able to withstand high currents, these switches are often used with motors and pumps.

Wireless Pendant Switches

Operate equipment from up to 330 feet away—these switches include a transmitter and a receiver that connects to equipment.

Wireless Foot Switches

Control equipment from up to 40 feet away—these switches include a transmitter and a receiver that connects to equipment.

Two-Hand Safety Switches

It takes two hands to activate these switches, minimizing the risk of accidental equipment start up.

Enclosure Door Switches

Activate or deactivate fans, lights, and other devices inside your enclosure when you open or close the door.

Frame-Mounted Safety Switches

Often used with machine guards, these switches mount to a door frame.

Relays

Spade-Terminal Relays

Using a low-current signal, these relays are often used to control small motors and heaters.

DIN-Rail Mount Solid State Relays

Unlike mechanical relays, these solid state relays have no moving parts, so they require less maintenance and last longer, switch faster, and are quieter. They mount on 35 mm DIN rail (also known as DIN 3) for fast installation.

Hazardous Location Relays

Sealed for safety, these relays are a good choice for hazardous locations where combustible or corrosive gases may be present.

DIN-Rail Mount Interface Relays

Prevent damage from voltage spikes, reduce signal interference, and amplify signal with these relays, which interface between your controller and components to isolate input and output circuits.

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.

Screw Terminal Relays

Use the screw terminals to hardwire these relays.

Circuit Board Safety Relays

Reduce connection errors on circuit boards that control machine guards and other safety devices. 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.

Compact Programmable Logic Controllers

Smaller than other PLCs, these controllers save space in your control cabinet. They combine the functionality of a relay, timer relay, and switch in one unit, so you can program simple automation jobs.

Timer Relays

Turn machinery, such as paint and conveyor lines, on and off after a set period of time.

Solid State Surface-Mount Timer Relays

Attach these relays to a flat surface using the mounting hole. They have no moving parts, so compared to mechanical switches, they require less maintenance, last longer, and are quieter.