120V DC Relays | McMaster-Carr

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Switching Voltage

Mounting Location

Switching Current

Number of Circuits Controlled

Timer Relay Function

Asymmetrical Repeat Cycle

Delayed Off

Delayed Pulse

Delayed Start (Delay on Make)

Delayed Switch Off (Delay on Break)

Delayed Switch-On with Delayed Switch-Off

Fixed On/Off

Interval

Interval Switch-Off

Manual Switch Control

Repeat Cycle

Star-to-Delta

Start-Off Asymmetrical Repeat Cycle

Start-Off Repeat Cycle

Switch Designation

Electrical Phase

Overall Timing

0.05 sec. to 1,800 sec.

Number of Terminals

Operation Type

Mechanical

Solid State

Wire Connection

Quick-Disconnect Terminal

Screw Terminal

Screw-Clamp Terminal

Spring-Clamp Terminal

Timing Adjustment Style

Relay Type

Switch Starting Position

Control Current

Horsepower @ Switching Voltage

Certification

C-UL Recognized Component

TUV Rheinland Certified

UL Listed

UL Recognized Component

Switch Action

Momentary

Socket Connection

Circular-Pin Terminal

Quick-Disconnect Terminal

RoHS

Compliant

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

Width

Enclosure Rating

103 Products

About Timer Relays

Spade-Terminal Relays

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

DIN-Rail Mount Interface Relays

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

DIN-Rail Mount Solid State Relays

Unlike mechanical relays, these solid state relays have no moving parts, so they require less maintenance and last longer, switch faster, and are quieter. They mount on 35 mm DIN rail (also known as DIN 3) for fast installation.

DIN-Rail Mount Solid State Interface Relays

With no moving parts, these solid state relays last longer, switch faster, and are quieter than mechanical relays. They interface between your controller and components to isolate input and output circuits, which protects components from voltage spikes, amplifies the relay’s signal, and reduces interference for reliable transmission.

DIN-Rail Mount Touch-Safe Screw Terminal Relays

Quickly and safely mount these relays on 35 mm DIN rail (also known as DIN 3). IP20 rated, they have recessed terminals that prevent fingers and other objects from touching live circuits.

Safety Relays with Diagnostic Capabilities

Control and diagnose issues with safety-critical circuits.

Hazardous Location Relays

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

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.

Solid State Surface-Mount Timer Relays

Attach these relays to a flat surface using the mounting hole. They have no moving parts, so compared to mechanical switches, they require less maintenance, last longer, and are quieter.

Timer Relays

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

Solid State DIN-Rail Mount Timer Relays

Mount these timer relays directly to 35 mm DIN rail (also known as DIN 3 rail) for fast installation. Unlike mechanical relays, they have no moving parts, so they require less maintenance and last longer, are quieter, and switch faster.

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.

High-Starting-Current DIN-Rail Mount Timer Relays

Reduce voltage fluctuations and stress on shafts and bearings when starting up three-phase motors. These timer relays start with motor contacts in a star configuration, then switch to a delta configuration after a set delay.