New | 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.

Technical Summary
Rating Range40-4000A
Transfer TypeOpen / Closed / 4 position switch
Switch TypeContactor Based
Electrical Ratings
Control Power40 to 4000 amperes, 2,3 or 4 poles
Enclosure CapabilityNEMA 1, 3R, 4, 4X and 12
System Voltage ApplicationAvailable 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

    Standard Equipment

    The CTE Series of Automatic Tranfser Switches
    • Drive Mechanism
    • Bypass Isolation Switches CBTED & CBTECT
    • The Cat CTE Series power contactor type transfer switch makes use of a fully programmable/configurable microprocessor-based controller to allow the utmost in application flexibility. Further, the CTE Series is offered in a wide array of configurations enabling it to meet the needs of even the most highly critical load.
      Available configurations include:
      • The MX350 microcontroller is a modular control and monitoring system designed specifically for low voltage transfer switch applications.
        The MX350 provides the following key benefits:
        Flexible control and communication options to suit any low-voltage transfer switch application
        Small footprint
        Modular design, which reduces the number of spare components for maintenance and testing
      • 40-4000 Amps:
      • CTE Automatic Transfer Switches
      • CTED Delayed Transition Transfer Switches
      • CTEM Manual Transfer Switches

      • 100-4000 Amps:
      • CTECT Closed Transition Transfer Switches
      • CBTE Open Transition Bypass Switches
      • CBTED Delayed Transition Bypass Switches
      • CBTECT Closed Transition Bypass Switches
    • CTECT Series:
    • Neutral Switching
    • CTE Electrical Ratings
    • Safe Manual operation
    • CTED Series:

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