Being directly involved with the design and implementation of the Utility Relay Co. AC-PRO-MP for replacing failing STR trip units and other custom trip unit retrofit kits. We will provide the best possible system protection for every project.This is a sampling of the retrofit work we do. Enter a new era of advanced system protection

AC-PRO-II

Features: 55% smaller, Conformal casting, Innovative logic / RS485 Modbus RTU Communication, UL Certified, Over 3000 kits available