FA91889
30 September 2021
Issue:What is the difference between electrically held and mechanically held lighting contactors?
Product Line:NEMA Lighting Contactors
Environment:Products sold and used in the United States
Cause:Selecting mechanically versus electrically held lighting contactors
Resolution:Electrically held devices require a maintained voltage to the control coil in order for the power contacts to stay closed. Mechanically held devices use a mechanical latch, instead , and therefore have retentive memory . Removal of voltage from the control circuit allows them to operate quietly and consume a very little amount of control power .
