Sylvania Joslyn Clark A77-302338A Fire Pump Contactor

The Sylvania Joslyn Clark A77-302338A Fire Pump Contactor is a three-pole control device designed to switch power to a fire pump motor within a building's fire protection system. The unit carries a 600V rating for the main contacts and uses a 480V coil, enabling direct control from common fire alarm/controller circuits in many installations. Identified by TB1629, this model aligns with the A77 family of contactors used across Joslyn Clark and Sylvania fire pump assemblies, providing consistent form, fit, and electrical characteristics for replacement or integration into existing panels. This contactor is intended for use where a reliable, dedicated switching element is required to energize a 3‑phase motor under fire protection fault- and alarm-triggered conditions. Its configuration supports straightforward mounting and wiring within standard fire pump controller enclosures, contributing to a streamlined retrofit or service replacement for aging equipment. When selecting a replacement, matching the 3P configuration, 600V contact rating, and 480V coil ensures compatibility with typical fire pump controller circuits and minimizes the need for additional control hardware.