Description
The MARS 90377 SPDT Power Relay is an electrical switching control component used to manage high-voltage load circuits. It operates as a single-pole double-throw relay, allowing controlled switching between two output paths based on coil activation in HVAC systems. Rated for 277 VAC applications, it is commonly used in air handling units, fan systems, and lighting or auxiliary control circuits. The relay is installed in control panels during servicing or equipment assembly, where it supports reliable circuit switching and system automation operation in residential, commercial, and light industrial applications.
