Refrigerant choice and electrical design are no longer separate decisions, as A2L systems bring new requirements for ignition ...

Over the years, control relays of various types have been used by the hundreds — even thousands — to control nearly every function in commercial and industrial processes. Today, many of those ...

Phoenix Contact's Contactronfamily of solid-state contactors now includes reversing and non-reversingcontactors in a variety of amperages. The contactors can activate or reverse 1-to 18.5 kW-powered ...

This chapter covers representative general-purpose relays used in the control circuits of most industrial, commercial, and consumer products. Relay names and terminology are in accordance with ...

The REC Series is twenty times more durable than equivalent mechanical contactors and succeeds in handling high frequency switching. The REC Series is comprised of a 3-pole non-reversing version with ...

When designing equipment with switching functions, most engineers find that switching high currents and high voltages is a major problem. A solid-state solution may be possible, but it’s complex and ...

Relays and contactors use a variety of technologies to switch signals and power connections. Many devices called relays use similar techniques and topologies, but the terminology can be confusing.

As we head into the colder months, HVACR technicians need to understand the fundamentals of defrost control board operation. While there are many types of defrost control boards on the market, they ...