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.

Mechanical switches can be divided into two basic types. The first, commercial and appliance switches, are used in fairly clean environments such as offices or homes. They are not sealed and are ...

Munich – Schaltbau, located in Munich, has launched a new safety contactor designed for use with control boxes. It combines the functions of the main contactor and the disconnecting and earthing ...