New | ATC Power Breaker Bypass Isolation Open/Closed Transition Automatic Transfer Switch

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.

Technical Summary
Rating Range200-5000A
Transfer TypeBypass isolation, Closed transition
Switch TypePower Breaker
Ratings
Control Power200-5000A, 2-, 3-, 4-pole
100% rated Short
System Voltage Application120-600 Vac 50/60 Hz
Time Withstand85,000 for 30 cycles
Withstand100 kAIC at 600V, 3 cycles
Applicable TestingCSA C22.2 No. 178 certified
UL 1008 listed up to 3200A
4000A, and 5000A UL 891 listed

  • 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

Controls and Wiring
  • 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.
Enclosure
  • Durable powder-coated steel NEMA 1, 3R or 12 enclosures with three door hinges to ensure proper support of the door and door mounted devices. The hinges have removable hinge pins to facilitate door removal for easy wall mounting or service and are supplied with pad-lockable latches.

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With only a few days notice, we were able to get the emergency system working properly. Hawthorne Cat provided great leadership and excellent field support.
Mark Cripe
Helix Electric
"

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