ATC Molded Case Circuit Breaker & Molded Case Switch 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. The open transition breaker-based Automatic Transfer Switch (ATS) will provide fully functioning transfer in applications where a momentary loss of power is acceptable on retransfer from emergency to normal power supply. The Cat Open Transition MCCB & MCS types of ATS also permits periodic testing of the emergency source without interrupting power to the loads and are available from 30 to 1000 amperes.

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Rating Range
30-1000A
Transfer Type
Open transition
Switch Type
Molded Case
Control Power
30-1000A 2, 3, or 4 Pole, 100% Rated

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Product Specs

Technical Summary

Rating Range
30-1000A
Transfer Type
Open transition
Switch Type
Molded Case
Rating Range
30-1000A
Transfer Type
Open transition
Switch Type
Molded Case

Ratings

Control Power
30-1000A 2, 3, or 4 Pole, 100% Rated
System Voltage Application
120 - 600 Vac, 50/60 Hz
Withstand
100,000 amps withstand/closing/ interrupting at480 Vac
Applicable Testing
CSA C22.2 No. 178 certified
IBC 2006, CBC 2007 and OSHPD

Standard/Optional Features

Standard Equipment:

  • 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, NEMA 3R and NEMA 12 are available with ATC-100 and ATC-300+ controllers. NEMA 4 is only available with the ATC-800 controller. The enclosures are Seismic Qualified (BOCA, CBC, IBC, UBC). The hinges have removable hing

Optional Equipment:

  • Available Options
    • Suitable for service entrance
    • Integral overcurrent protection
    • 2- or 4-position test switch
    • Multi-meter options available
    • Selectable automatic or non-automatic operation
    • Space heaters
    • Load sequencing contacts
    • Surge suppression
    • Remote communications
    • Controller availability: ATC-100, ATC-300+,and ATC-800
    • Field selectable, multi ratio, control voltage transformer 50/60 Hz
    • Communications for the ATC-300+ Controller via RS-232 or Modbus through an integrated RS-485 port
  • Optional Delayed Transition Includes:
    • Time delay neutral
    • Pre-transfer signal with 1 N.O. and 1 N.C. contacts