Relay Sockets


What are Relay Sockets?

A relay socket can be thought of as a device that acts as a switch in which a change of current in one circuit influences the flow of electricity in another.  They come in a wide variety of different shapes, sizes, and have different applications overall.  Typically, they are made out of metal, though newer composite materials are now being used in relay socket construction as well.  Some standard types of relay sockets include:

  • Single pole: control only one line with each throw
  • Double pole: control two lines (a hot and neutral)
  • Triple pole: have three pairs of contacts
  • Four pole: have four pairs of contacts

Some things to consider when choosing a component that is ideal for you and your situation are the relay socket’s electrical rating, insulation resistance, dielectric strength, and temperature range.  Also, when shopping for the perfect relay socket, some common things to compare are the varying terminal types, overall number of pins per blade, and the socket receptacle style.

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How Relay Sockets Work

When trying to understand the concept of how a simple relay works, many people make the concept more complex than it actually is.  In its simplest form, a relay is nothing more than a simple switch.  That’s it!  The only real difference is that unlike a normal wall-mounted switch, this switch is turned on and off by electric current, rather than by a human physically flipping it.  An internal coil (typically made from a metal that is a good conductor of electricity) is energized and can then “flip” just like a normal switch.

Relay Socket Uses

Relay sockets are used extensively in residential, commercial, and industrial applications.  They are a basic electrical component that is essential in wiring and operating machines, appliances, automobiles, and about anything else you can think of that is hard wired.  However, different relay sockets serve different purposes.  This is why Curtis Industries currently inventories a selection of different relay sockets that puts most large, box-store component stores to shame.  We understand the need for variety, making us your trusted one-stop-shop for all of your relay socket needs.

In addition, Curtis Industries also carries a large selection of other electrical supplies and accessories.  Some of our popular products include RFI filters, PC board blocks, terminal blocks, and custom molding services for personalized components.  Our reputation for providing a superb customer service experience speaks for itself, as we provide only the best of the best electrical components on the market.

For more information on Curtis Industries, our available products, or for any feedback/concerns, feel free to contact one of our associates today!


  • Permanent-numbered terminals for easy identification
  • Thermoplastic sockets with closed-back design (eliminates panel insulation, and resists breakage)
  • Nickel-plated screw-type terminals on break-resistant barrier-type terminal blocks
  • Screw-type terminals on some models have captivated wire clamps to eliminate lugging
  • Compact, printed circuit designGlass epoxy G-10 printed circuit boards
  • Can be laid in tracks for insertion of marking strips
  • Maximum relay retention and electrical conductivity 

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How to Order

Relay sockets can be ordered with the track and assemblies sold separately (in parts form) or factory-assembled to specifc lengths. Please specify type—number of sockets in continuois one-piece pre-cut track; for example, order RS8-17 for a track containing 17 RS8 socket assemblies.

*Many Curtis Socket Assemblies are recognized under the Components Program of Underwriters Laboratories, Inc. under file No. E59934. Socket Assemblies listed by Canadian Standards Association are covered by Report No. LR19623.