Schneider Electric 9998 BA-81 3-Pole Contact Kit

Schneider Electric 9998-BA81 is a three-pole Class 9998 replacement contact kit designed for Square D size 0, Type B contactors and starters. This OEM kit targets the 8502 (contactor) and 8536 (starter) families, with cross-reference notes that map BA81 to Series A and Series B equipment and to compatible rev components (such as 8702 for contactors and 8736 for starters) used in common Square D installations. The kit includes 3 moveable contacts, 6 stationary contacts, and 6 stationary screws; springs are not included because they are part of the contact carrier assembly. Specifically intended to refurbish a three-pole device, it enables replacement of worn contacts in Square D relays and motor starters without replacing the entire assembly, helping maintain reliable current paths in industrial control panels that rely on compact size 0 equipment. Compatible with the traditional Square D 8502/8536 family and related configurations, the BA81 variant provides a direct path to serviceability for aging control hardware while preserving original electrical characteristics and contact geometry.