CTE Series Automatic Transfer Switch
CTE Series Automatic Transfer Switch


The Cat® CTE Series transfer switches are configurable for applications requiring the dependability and ease of operation found in a full featured power contactor type transfer switch.
The CTE Series is equipped with the MX350 controller that is designed for the most demanding transfer or bypass switch applications providing enhanced connectivity for accurate and timely diagnostics and event recording.

Get Pricing
Rating Range 40-4000A
Transfer Type Open / Closed / 4 position switch
Switch Type Contactor Based
Control Power 40 to 4000 amperes, 2,3 or 4 poles
Enclosure Capability NEMA 1, 3R, 4, 4X and 12
System Voltage Application Available to 600 VAC, 50 or 60 Hz
Applicable Testing
  • Seismic tested and certified to IBC 2006 & OSHPD
  • CSA C22.2 No. 178 certified at 600 VAC
  • IEC 947-6-1 liste
    • Double throw, interlocked operation
    • Electrically operated, mechanically held by a simple, over-center mechanism
    • Silver alloy contacts with separate arcing contacts on 600 amp and above
    • Arc quenching grids, enclosed arc chambers, and wide contact air gap for superior source to-source isolation on all units
    • Durable solenoid ATS operated mechanisms and robust electronics, tested for severe Electro Magnetic Compatibility and Environmental conditions
    • Control circuit disconnect plug and drive inhibit switch for safe maintenance
    • Components accessible for inspection and maintenance without removal of the switch or the power conductors
    • Mechanical indicator and contact chamber cover designed for inspection, safety and position designation

    • Standard open two position transition plus delayed and closed transition
    • High close-in and withstand capability
    • Temperature rise test per UL 1008 conducted after overload and endurance tests in unventilated enclosure – exceeds UL requirements
    • Equipped with the MX350 Control Packag