ATC Service Entrance Rated MCCB & Power Breaker Based ATS

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Cat® Service Entrance Rated (SER) automatic transfer switches (ATS) are designed to provide standby power emergency power to entire installation loads to protect against utility power interruption; yet allow the ATS to be as close as possible to the point of service entrance. By safely and in code compliance, integrating the necessary overcurrent protection and service disconnecting means into the automatic transfer switch, a single installation can be made at the service entrance. This design eliminates the need for a separate upstream fault protection and respective interconnections, which in turn reduces installation space, time, and cost. Breaker-based Service Entrance Rated transfer switches are available from 30A to 5000A.

Pricing: Contact for Pricing

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Rating Range 30-5000A
Switch Type Molded Case and Power Breaker
Transfer Type Open / Closed / Delayed
Applicable Testing
UL 1008 listed up to 3200A

4000A, and 5000A UL 891 listed
Drawout Power Breaker 200-5000A 2, 3, or 4-Pole
Fixed Mount Power Breaker 200-3200A 2, 3, 4-Pole
MCCB 30-1000A 2, 3, or 4 Pole
System Voltage Application 120-600 Vac 50/60 Hz
Withstand (Power Breaker) Up to 100 kAIC at 600V 3 cycles

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, 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
    • 4-position test switch
    • Remote communications
    • Surge suppression
    • Selectable automatic or non-automatic operation
    • Seismic Zone 4 Qualified (BOCA, CBC, IBC, UBC and OSHPD)
    • Communications for the ATC-300+ controller via RS-232 or Modbus through an integrated RS-485 port
    • Field selectable, multi ratio, control voltage transformer 50/60 Hz
    • Load sequencing contacts
    • Multi-meter options available
    • Open, closed or delayed transition
    • Space heaters
    • Integral overcurrent protection
  • Optional Delayed Transition Includes:
    • Pre-transfer signal with 1 N.O. and 1 N.C. contacts
    • Time delay neutral
Renee HerndonRenee Herndon
21:55 29 Feb 24
Dalton was very helpful, The road construction, however, was not! 😂I would rather have to sand paper an alligators @$$ in a phone booth that to get in that mess again.
David LawrenceDavid Lawrence
13:04 22 Feb 24
Brandon PierceBrandon Pierce
22:00 18 Feb 24
Darin NoeDarin Noe
01:17 16 Feb 24
Jose SotoJose Soto
15:26 23 Sep 23
Hunter ElliottHunter Elliott
16:17 07 Sep 23
Rick Kelly-CrapseRick Kelly-Crapse
21:06 25 Aug 23
They had all my parts for my 3208 Cat.Friendly folks at parts counter.
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