Square D 9999SM13 Type S Mechanical Interlock Kit

Square D 9999SM13 Type S Mechanical Interlock Kit is a dedicated interlock accessory for Square D Type S starters and contactors. Designed for vertical‑mount installation on Size 4 equipment and suitable for NEMA 4 environments, this kit ensures a mechanically interlocked configuration between two devices in a motor‑control circuit, preventing simultaneous engagement and enhancing operator safety. The 9999SM13 is part of the Class 9999 Type S interlock family and is used with compatible starter and contactor assemblies to coordinate the interlock function through its mounting hardware and reversing baseplate interface. When installed per Schneider Electric guidelines, the interlock maintains safe sequencing for two‑pole or multi‑pole configurations, making it well‑suited for outdoor or washdown‑rated panels where NEMA 4 protection is required. The kit provides the essential mechanical linkage and mounting components that align with Square D Type S devices, ensuring precise engagement and reliable performance in demanding industrial environments.