Schneider Electric 9999SX11 Contact Block

Schneider Electric 9999SX11 is a single normally open auxiliary contact block that mounts to Type S NEMA motor starters and contactors to provide an additional control circuit contact. This internal, nonconvertible accessory carries one normally open (NO) contact and is designed to be paired with compatible Schneider Electric/NEMA contactors, including 8502, 8702, 8536, and 8736 series. It supports sizes from NEMA 00 up to 7, giving flexible integration across a range of starter assemblies. The 9999SX11 is rated for AC operation up to 600 V and a continuous load current of 3 A. Its electrical ratings specify a make current of up to 30 A at 120 V or less, and for 120–600 V operation a make rating of 3600 VA with a break rating of 360 VA. As an auxiliary block, it enables signaling, interlocking, or feedback circuits without altering the primary switching function of the main contactor, making it a compact, serviceable option for expanding control circuitry in motor-control panels.