DPDT Relays | McMaster-Carr

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190 Products

Relays

Spade-Terminal Relays

Using a low-current signal, these relays are often used to control small motors and heaters.

Compact Spade-Terminal Relays

Fit these relays where standard spade-terminal relays are too big.

Thin Spade-Terminal Relays

Save space in your control cabinet. These narrow relays are often used for low-current switching applications, such as on small motors and pilot lights.

DIN-Rail Mount Interface Relays

Isolate input and output circuits to prevent damage from voltage spikes, reduce signal interference, and amplify signal.

Circular-Pin Relays

The circular pin terminals plug into relay sockets for easy installation.

Circuit Board Relays

Smaller than relays with electrical wiring, these relays fit in compact devices. Mount them through holes on circuit boards with their solder pin terminals.

Open-Style Screw Terminal Relays

Use these relays with industrial automation systems, security and emergency lighting, and small motors.

Latching Relays

A single, momentary input voltage switches these relays and locks them in position, so they don't require a constant input voltage to stay on or off.

Circuit Board Safety Relays

Reduce connection errors on circuit boards that control machine guards and other safety devices. These relays take up less space on a board than those with electrical wiring because their solder pin terminals mount directly through circuit board holes.

Interface Safety Relays

These relays pair the transmission reliability of an interface relay with the fail-safe operation of a safety relay. They have interlocking contacts—also known as force-guided or mechanically linked contacts—so opposing contacts won't close at the same time.

Hazardous Location Relays

Sealed for safety, these relays are a good choice for hazardous locations where combustible or corrosive gases may be present.

Washdown Enclosed Relays

A NEMA 4X enclosure protects these relays from washdowns, dirt, and corrosion.

Enclosed Relays

An enclosure covers the terminals on these relays to help prevent damage from dust or accidental bumps.

Alternating Relays

Split run time between two devices—these relays automatically alternate between them.

Smart Multifunction Monitoring Relays

Remotely control these relays through an app on your smartphone—they simultaneously monitor phase, voltage, and frequency.

Ground-Fault Monitoring Relays

Detect and mitigate ground faults to prevent harm to equipment, circuits, and people.

Timer Relays

DIN-Rail Mount Multifunction Timer Relays

Control multiple timing functions from your electrical cabinet—these timer relays mount to 35 mm DIN rail (also known as DIN 3 rail), which is the most commonly used size.

Timer Relays

Turn machinery, such as paint and conveyor lines, on and off after a set period of time.

Dual-Channel DIN-Rail Mount
Multifunction Timer Relays

Control two steps of an electrical process from a single relay—with two fully independent channels and 30 different functions, these relays give you a wide range of possibilities.

Multifunction Timer Relays

Get a variety of timing functions in a single relay.

Solid State Versa-Mount Multifunction Timer Relays

Install these relays in a panel cutout or plug them into a relay socket. Unlike mechanical relays, these solid state relays have no moving parts, so they require less maintenance and last longer, are quieter, and switch faster.

Solid State Versa-Mount Timer Relays

Mount these timer relays in a panel cutout or plug them into a relay socket for quick installation. Capable of fast switching, they are solid state and have no moving parts, so they require less maintenance, last longer, and are quieter than mechanical relays.

Smart DIN-Rail Mount Multifunction Timer Relays

Whether installed in an electrical cabinet or hard-to-reach area, these timer relays are controlled remotely from your smartphone. They connect to your phone via a free downloadable app so you can set time delay ranges, adjust settings, and save programs.

Relays

Spade-Terminal Relays

Compact Spade-Terminal Relays

Thin Spade-Terminal Relays

DIN-Rail Mount Interface Relays

Circular-Pin Relays

Circuit Board Relays

Open-Style Screw Terminal Relays

Latching Relays

Circuit Board Safety Relays

Interface Safety Relays

Hazardous Location Relays

Washdown Enclosed Relays

Enclosed Relays

Alternating Relays

Smart Multifunction Monitoring Relays

Ground-Fault Monitoring Relays

Timer Relays

DIN-Rail Mount Multifunction Timer Relays

Timer Relays

Dual-Channel DIN-Rail MountMultifunction Timer Relays

Multifunction Timer Relays

Solid State Versa-Mount Multifunction Timer Relays

Solid State Versa-Mount Timer Relays

Smart DIN-Rail Mount Multifunction Timer Relays

Dual-Channel DIN-Rail Mount
Multifunction Timer Relays