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ATC Contactor-Based Automatic Transfer Switch

ATC Contactor-Based Automatic Transfer Switch

More Comfort – More Performance – More Versatility

  • ATC-300+ or ATC-900 microprocessor-based controller

  • provides flexibility, reliability and value

    in a compact package

  • Closed transition

    permits periodic testing of the emergency power source without interrupting power to the loads

Technical Summary

Rating Range 40-3000A
Switch Type Contactor Based
Transfer Type Open / Closed Transition


Applicable Testing UL 1008 listed, CSA C22.2 No. 178 certified, IBC 2006, CBC 2007 and OSHPD
Control Power Wall Mount 40-600A 2 or 3 Pole
Floor Standing 600A 4 Pole & 800-1200A 2, 3, or 4 Pole
System Voltage Application Up to 600 Vac, 50/60 Hz
Three-Position Contactors Three-position contactors 40-1200A
Two-Position Contactors Two-position contactors 40-400A

Download resources

ATC Contactor-Based Automatic Transfer Switch Spec Sheet
Cat Gensets Rating Guide

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