Lighting Contactors Electricially Held Lighting Contactors Mechanically Held

Lighting Contactors Electricially Held
Lighting Contactors Electrically Held require a maintained voltage to the control coil in order for the power contacts to stay closed. They require a constant current and a constant power dissipation to hold the circuit. A common relay or motor starter is a good example of this type of contactor.

Lighting Contactors Mechanically Held
Lighting Contactors Mechanically Held use a mechanical latch instead and have a retentive memory. Removal of the voltage from the control circuit allows them to operate quietly. They consume a very little amount of control power. They are held in place without the need of a constant power drain. The coil on these types of contactors is far less likely to burn up as it is energized momentarily.