Type S magnetic contactors and starters are for motor control applications. 8903S lighting contactors are for lighting control applications. Type S contacts are easily replaced. This extends the life of the NEMA Size 4 contactor or starters or 200A lighting contactor. This replacement contact kit is for 3 pole 8502SF contactors, 8536SF starters and 8903SV lighting contactors. Kit includes the movable and stationary contacts and needed hardware for 3 poles. A wide variety of accessories are available for contactors and starters.