Square D 9998SL-26 N Selector Switch

9998SL26 (NEMA Size 6) direct-mount replacement contact kit for Square D class 8502, 8536, 8538, 8539 magnetic contactors and motor starters, rated up to 400 A at 600 VAC in a 3-pole configuration. The kit includes three contacts (movable and stationary) and springs to restore conductivity across all poles. Designed for direct installation into existing 3-pole 8502/8536/8538/8539 frames, including 8536SH and 8903SY variants. This replacement is a field-maintenance accessory intended to refresh worn contact sets in industrial motor-control circuits where Square D equipment is specified. It is manufactured by Square D (Schneider Electric) as part of the 9998 series replacement kits. The kit aligns with Class 8502/8536/8538/8539 frames for straightforward, direct replacement. Typical maintenance applications include restoring conductance in 600 VAC, 3-pole, NEMA size 6 motor-control circuits within industrial equipment. The part number is 9998SL26, commonly marketed as a direct-mount contact kit in Square D's 9998 series. Tooling and materials details show three poles, with movable and stationary contacts and spring assemblies for robust switching performance.