Three-Phase Relays | McMaster-Carr

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620 Products

Electrical

Relays

Electrically open and close circuits to control power to lights, motors, and other equipment

125 products

Motor Starters

Turn motors on and off and protect them from current overloads

410 products

Motor Starter Switches

Combine with a thermal overload element to build a starter that can handle high-current-rated motors

7 products

Motor Starter Overload Protectors

Upgrade your motor starter protector to use less energy and emit less heat

6 products

Motor Voltage Monitors

Protect electric motors by cutting power when faults occur

5 products