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B-Series CBL Bypass Isolation Transfer Switch
Cummins

B-Series CBL Bypass Isolation Transfer Switch

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The CBL bypass-isolation transfer switches combine a draw-out automatic transfer switch with isolation mechanism and a manual bypass transfer switch, to provide redundant power transfer and re-transfer capability where reliable power is paramount to the safety and vitality of our communities. These products are specifically designed to provide a convenient and robust means to satisfy the NFPA 70 Article 700 and 708 requirements for redundant transfer equipment.

Utilizing the proven Cummins BT mechanism architecture and integrating it with the new premium PC80 transfer switch control which provides standard market leading features such as integral Modbus TCP/IP and RTU communication and NFPA 70 genset start signal integrity.

The transfer switches are designed for operation and switching of electrical loads between primary and alternate power sources. They can be used in utility-generator set, utility-utility, generator set-generator set, or three- source system (dual standby) application types.

The CBL transfer switches are suitable for use in emergency, legally required and optional standby applications. The integral automatic transfer switch control monitors both power sources, signals the generator set to start and automatically transfers the load to the alternate power source. When the preferred power source returns and has stabilized, the load is automatically transferred back.

Specification
  • Features & Benefits

    • High accuracy power quality metering
    • Load shed
    • Integral control power supply
    • Standard and premium I/O offered
    • Protective relays
    • Anti-condensation heater

    Specifications

    Amps

      • 150A – 1000A

      Bypass isolation

        • Integrates a draw-out automatic transfer switch with isolation mechanism and a manual bypass switch. 
        • Offers reliable power transfer and re-transfer functionality for critical applications that demand a dependable power supply to the load.
        • Manual bypass transfer switch and integral automatic transfer switch have identical electrical ratings
        • Manual bypass transfer switch contacts carry current only when the integral automatic transfer switch is bypassed

        Ease of operation

          • Bypass and isolation functions are simple and easy to understand, requiring only two operating handles

          Draw-out positions

            • Connected, tested, and isolated with door closed for safety

            Heavy-duty, three-point latches

              • Ensures door will stay closed without the need for screw-in fasteners

              Positive interlocking

                • Mechanical and electrical interlocking prevent inadvertent source-to-source connection through the power or control wiring

              Technical specification
              • Unique ref.b-series-cbl-bypass-isolation-transfer-switch
              • Product familySwitches
              • Product groupAutomatic Transfer Switches
              • TypeObject (single object)
              • Date of publishing2025-04-02
              • Edition number1
              Related
              • Material mainSteel
              • Designed inUnited States
              • Manufactured inUnited States
              Classification
              • BIMobject CategoryElectrical - Switchgear
              • IFC classificationElectric Distribution
              • UNSPSC nameSwitchgear systems
              • UNSPSC code39121105
              • Uniclass 2015 CodePr_60_70_48_05
              • Uniclass 2015 DescriptionAutomatic transfer switching equipment (TSE)
              • CSI MasterFormat 2014 Code26 36 00
              • CSI MasterFormat 2014 TitleTransfer Switches
              • OmniClass Number23-35 37 11
              • OmniClass TitleAutomatic Transfer Switches
              • CSI UniFormat II CodeD5010
              • CSI UniFormat II TitleElectrical Service and Distribution

              Region availability

              North America
              Anguilla
              Antigua and Barbuda
              Aruba
              Barbados
              Belize
              Bermuda
              British Virgin Islands
              Canada
              Caribbean Netherlands
              Cayman Islands
              Collectivity of Saint Martin
              Costa Rica
              Curaçao
              Dominica
              Dominican Republic
              El Salvador
              Greenland
              Grenada
              Guadeloupe
              Guatemala
              Haiti
              Honduras
              Jamaica
              Martinique
              Mexico
              Montserrat
              Nicaragua
              Panama
              Puerto Rico
              Saint Kitts and Nevis
              Saint Lucia
              Saint Pierre and Miquelon
              Saint Vincent and the Grenadines
              Saint-Barthélemy
              Sint Maarten
              The Bahamas
              Trinidad and Tobago
              Turks and Caicos Islands
              U.S. Virgin Islands
              United States