New | CTX Series Automatic Transfer Switch

Cat® CTX Series switches are built for residential and light commercial applications requiring the dependability and ease of operation found in a power contactor switch.

Voltage sensing and system control is performed via a state-of-the-art microcontroller located on the cabinet door.

Technical Summary
Rating Range40-400A
Transfer TypeOpen transition
Switch TypeContactor Based

    ctx Switches Are Equipped With The Mx-60 Control Panel As Standard.
    This Microprocessor Control Includes:
  • undervoltage Sensing (90% Pickup/80% Dropout Of The Utility Source
    • Voltage And Frequency Sensing Of The Generator Source (90% Voltage/95% Frequency Pickup)
    • time Delay Engine Start – 5 Seconds (p)
    • time Delay Engine Warmup – Transfer To Generator – 20 Seconds (w)
    • time Delay Utility Stabilization/retransfer To Utility – 5 Minutes (t)
    • time Delay Engine Cool Down – 5 Minutes (u)

    All Time Delays Are Fixed.

The unit is available in open type, NEMA 1 or NEMA 3R enclosures. The MX-60 control panel adds a user interface and functionality, including:
  • Indicating LEDs for power availability, switch position and load energized
  • Pushbuttons for test, exercise set, timer bypass and program cancel
  • Special status annunciation of in-phase transfer and times operation
  • Selectable 7, 14, 21 or 28 day (factory set 28 days) generator exerciser timer
  • Diagnostic LED indications in logical one-line configuration
Additional options include:
  • A3/A4 Auxiliary contacts (1 each) closed in utility and generator positions
  • Special timer settings



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