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336 Excavator

  • Specs Summary
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  • Input Control Voltage

ATC Power Breaker & 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 power case switch-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 power case switch-based ATS also permits periodic testing of the emergency source without interrupting power to the loads and are available from 200 to 5000.
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  • Switch Type ( )
  • Control Power ( )
  • System Voltage Application ( )
  • Time Withstand ( )
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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.


  • 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.

Optional Equipment

Available Options

  • Load sequencing contacts
  • Multi-meter options available
  • Controller availability: ATC-100, ATC-300+,and ATC-800
  • 2- or 4-position test switch
  • Remote communications
  • Integral overcurrent protection
  • Field selectable, multi ratio, control voltage transformer 50/60 Hz
  • Suitable for service entrance
  • Space heaters
  • Open or closed transition
  • Surge suppression
  • Selectable automatic or non-automatic operation

Optional Delayed Transition includes:

  • Time delay neutral
  • In-phase transition
  • Pre-transfer signal with 1 N.O. and 1 N.C. contacts