NEMA 3R Switches | McMaster-Carr

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61 Products

Electrical

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

15 products

Transfer Switches

Switch to backup power during an outage

2 products

Heating, Ventilation, and Air Conditioning

HVAC Switches

Control and monitor airflow in HVAC systems automatically

1 product

Lighting

Light Switches

Manually turn lights on and off

4 products