Energy Efficient 100 Amp Contactor Normally Closed NC 100A, 4 Pole 120V coil, 110v Lighting Power

When a contactor is closed using a momentary contact pushbutton switch, a set of contacts may be added to the contactor to form an electrical holding circuit and eliminate the need for someone to hold the pushbutton continuously.Question 58: Not yet answeredMarked out of 1.00Select one: a. normally closedb. normally openc. magneticd. initiatingQuestion 59: Not yet answeredFigure 320.12Marked out of 1.00Select one: a. Ib. IIIc. IId. IV

Contactor Failure, Causes and Maintenance