3PST Switches | McMaster-Carr

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156 Products

Choosing an Electrical Switch

Panel-Mount Compact Disconnect Switches

Install these switches in a panel cutout.

Enclosed Compact Disconnect Switches

These switches are housed in a protective enclosure so they can be mounted wherever needed.

Panel-Mount Disconnect Switches

Harsh Environment Panel-Mount
Disconnect Switches

Rated IP69K, these switches are protected from high-pressure and high-temperature washdowns.

Durable Disconnect Switches

Protected by a steel enclosure, these switches withstand tougher conditions than switches in a plastic housing. Also known as safety switches, they have quick-make/quick-break action to eliminate arcing and prolong switch life.

Outdoor Durable Disconnect Switches

A raintight NEMA 3R rated enclosure protects these switches outdoors.

Washdown Enclosed Disconnect Switches

Rated IP66, these switches are protected from washdowns.

Enclosed Disconnect Switches

Safety Relays

Receive signals from safety monitoring relays or controllers to switch devices off and on because of a system failure.

Temperature Control

Washdown Wall-Mount Autotuning
Temperature Controllers

For protection in washdown conditions with splashing water, corrosive liquid, and dust, these controllers have a wall-mount housing that meets NEMA 4X. They’re ideal for systems with rapid, unpredictable, or complex temperature changes.

Washdown Wall-Mount Temperature Switches

To protect these switches from splashing water, corrosive liquid, and dust, the housing meets NEMA 4X for washdown conditions.

Choosing an Electrical Switch

Disconnect Switches

Panel-Mount Compact Disconnect Switches

Enclosed Compact Disconnect Switches

Panel-Mount Disconnect Switches

Harsh Environment Panel-MountDisconnect Switches

Durable Disconnect Switches

Outdoor Durable Disconnect Switches

Washdown Enclosed Disconnect Switches

Enclosed Disconnect Switches

Safety Relays

Safety Relays

Temperature Control

Washdown Wall-Mount AutotuningTemperature Controllers

Washdown Wall-Mount Temperature Switches

Harsh Environment Panel-Mount
Disconnect Switches

Washdown Wall-Mount Autotuning
Temperature Controllers