CSA Certified Relays | McMaster-Carr

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610 Products

Electrical Power, Networking, and Controlling

Relays

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

201 products

Relay Sockets

Quickly mount relays to DIN rail or flat surfaces

33 products

Timer Relays

Turn machinery on or off after receiving an electrical signal that starts the timer

70 products

Latching Relays

Lock into position so they don't require constant voltage to stay switched

9 products

Monitoring Relays

Trip circuits or sound an alarm when voltage, current, or other limits are exceeded

6 products

Safety Relays

Monitor circuits and force machines to a safe stop if the relay detects a fault

35 products

Infrequent-Cycle Relays

Use with equipment that cycles on and off, such as HVAC systems

90 products

Lighting Relays

Control lighting circuits and switch lighting systems on or off

13 products

Alternating Relays

Automatically split run time between two devices so one isn't always running

2 products

Motor Starter Overload Protectors

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

8 products

PLCs

Program complex automation jobs by combining the functionality of a relay, timer relay, and switch

6 products

Motor Starters

Turn motors on and off and protect them from current overloads

103 products

Motor Voltage Monitors

Protect electric motors by cutting power when faults occur

2 products