Lighting Contactors
Controlling large commercial lighting systems can be accomplished with electrical devices known as lighting contactors. With the capability of local or remote switching, these controls enable lights to be turned on and off from a central location or even through automation systems.
There are two fundamental kinds of lighting contactors: electrically held and mechanically held. Electrically held lighting contactors use an electromagnet to keep the contacts in position while de-energized. This ensures illuminations remain lit by default. On the other hand, mechanically held contactors utilize latching mechanisms to do the same thing. They too require continuous electricity to keep lights on—otherwise, they turn off; whereas electrically held units will continue providing light when not powered by a coil (i.e., when not switched ON).
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