Square D 9999SX13 Auxiliary Contact Kit Sa-sj

Product Description

The SQUARE D 9999SX13 is an auxiliary contact kit designed as an accessory for SA-SJ series contactors. Auxiliary contacts extend the switching capability of a contactor, allowing control circuits to monitor or interlock with the main contactor's open or closed state. This kit is used by licensed electricians and HVAC technicians working on motor control, HVAC equipment, and industrial or commercial electrical panels where SA-SJ contactors are installed. The 9999SX13 provides a direct-fit, OEM-style solution for adding or replacing auxiliary contact functionality on existing contactor assemblies.

This kit is suited for residential, commercial, and light industrial applications where SA-SJ contactors are in service. Typical installations include rooftop units, air handlers, chiller panels, and motor control centers. Electricians use this accessory when upgrading contactor control schemes or replacing worn auxiliary contact blocks without swapping out the entire contactor assembly.

Key Features

• Designed specifically for use with SA-SJ series contactors
• Adds or replaces auxiliary contact capability on existing contactor assemblies
• Compact form factor at 4.5 inches length, 3 inches width, and 1.5 inches height
• Lightweight at 0.17 pounds for easy handling during panel work
• Sold as a complete kit — one auxiliary contact kit per package

Compatibility

The 9999SX13 is compatible with SA-SJ series contactors as specified by the manufacturer. Verify contactor series and auxiliary contact position availability before installation.

Installation Notes

Installation should be performed by a qualified electrician in accordance with the NEC and applicable local codes. De-energize and lock out the contactor and all associated control circuits before beginning work. The auxiliary contact kit snaps or mounts onto the contactor body per the contactor's wiring diagram — consult the contactor documentation for mounting position and wiring terminal assignments. Do not energize the assembly until all contacts are fully seated and covers are secured.