ATC Contactor-Based Automatic Transfer Switch

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Product Features

  • ATC-100, ATC-300+ or ATC-800 microprocessor-based controller
  • Voltage and frequency sensing
  • High withstand and closing ratings
  • Multiple field programmable set points
  • Status Display including switch position indication
  • Source availability indication
  • Source 1 and 2 auxiliary contacts
  • True RMS voltage and frequency sensing
  • Programmable plant exerciser
  • System test pushbutton
  • Mimic diagram
  • Double-throw, mechanically interlocked transfer mechanism
  • Switch position indication
  • Status display
  • Double-throw UL 1008 3-position contactors
Technical Summary
Rating Range 40-1600A
Transfer Type Open / Closed Transition
Switch Type Contactor Based
Ratings
Control Power Wall Mount 40-600A 2 or 3 Pole
Floor Standing 600A 4 Pole & 800-1200A 2, 3, or 4 Pole
Two-Position Contactors Two-position contactors 40-400A
Three-Position Contactors Three-position contactors 40-1200A
System Voltage Application Up to 600 Vac, 50/60 Hz
Applicable Testing UL 1008 listed, CSA C22.2 No. 178 certified, IBC 2006, CBC 2007 and OSHPD

Standard Equipment

  • Contact Composition
    • Caterpillar utilizes silver composition contacts designed to meet the stringent requirements of UL 1008. All contactors are designed so that the contacts can be visually inspected without major disassembly and are protected by arcing contacts.
  • 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.

Optional Equipment

  • Available Options
    • 2- or 4-position test switch
    • Controller availability: ATC-100, ATC-300+,and ATC-800
    • Delayed transition or closed transition
    • Multi-meter options available
    • Surge suppression
    • Space heaters
    • Field selectable, multi ratio, control voltage transformer 50/60 Hz
    • Selectable automatic or non-automatic operation
    • Remote communications
    • Load shed from emergency
  • Optional Delayed Transition includes:
    • Pre-transfer signal with 1 N.O. and 1 N.C. contacts
    • Time delay neutral

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