NEMA 3R Switches | McMaster-Carr

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61 Products

Heating, Ventilation, and Air Conditioning

HVAC Switches

Control and monitor airflow in HVAC systems automatically

1 product

Electrical Power, Networking, and Controlling

Disconnect Switches

Make sure equipment stays turned off during inspection and maintenance

19 products

Motor Switches

Turn motors, lighting, and electric heat circuits on and off

2 products

Timer Switches

Automatically turn electrical equipment on or off after a set interval

20 products

Transfer Switches

Switch to backup power during an outage

2 products

Lighting

Light Switches

Manually turn lights on and off

4 products