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Cat transfer switches are designed for a variety of standby power applications. They provide flexibility, reliability and value in a compact package. A Bypass Isolation Automatic Transfer Switch (ATS) provides fully functioning transfer in applications where emergency power to critical loads must be maintained at all times with no interruption. This type of design allows for inspection, maintenance or replacement of the power switching mechanisms with no interruption in electrical service. Breaker based Bypass isolation ATS are available from 200A to 5,000A.

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Technical Summary
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Rating Range 200-5000A 200-5000A
Transfer Type Bypass isolation, Closed transition Bypass isolation, Closed transition
Switch Type Power Breaker Power Breaker

Product Features

  • ATC-800 microprocessor-based controller
  • True RMS voltage and frequency sensing
  • Full 30-cycle short time withstand capability
  • 30-cycle, 85 kA short-time rating on power circuit breaker
  • Multiple field programmable time delays
  • Switch position indication
  • Source availability indication
  • Source 1 and 2 auxiliary contacts
  • Programmable plant exerciser
  • System test pushbutton
  • Load shed from emergency
  • Mimic diagram
  • Safe manual operation under full load with permanently affixed operating handle
  • Drawout capabilities on both ATS, bypass portions and power switching devices completely interchangeable between ATS and bypass units

ATC Power Breaker Bypass Isolation Open/Closed Transition ATS Standard Equipment

Controls and Wiring
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  • All controls relays and industrial grade relays are totally encapsulated to minimize exposure to dust and dirt. Lugs are 90º rated and all control wire is #16 AWG, type XLPE with a 125º temperature rating.

ATC Power Breaker Bypass Isolation Open/Closed Transition ATS Optional Equipment

Available Options
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  • Surge suppression
  • Field selectable, multi ratio, control voltage transformer 50/60 Hz
  • Integrated service entrance
  • Space heaters
  • Remote communications
  • Multi-meter options available
  • 2- or 4-position test switch
  • Selectable automatic or non-automatic operation
  • Open or closed transition
  • Load sequencing contacts
  • Integral overcurrent protection
  • Seismic Zone 4 Qualified (BOCA, CBC, IBC, UBC and OSHPD)