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ZBTE - Bypass/Isolation

The ZBTE Series Bypass/Isolation automatic transfer switch (ATS) is ideal for use in todays 7x24 service centers, data warehouses and critical healthcare facilities. These mission critical sites demand more than just continuity of power, and the ZBTE meets these challenges.

Poor power quality damages equipment and increases maintenance costs. Inherent power problems stay hidden when testing is ineffective or incomplete. Going beyond source switching and addressing the issues of complete power quality requires a whole new level of Bypass ATS capability. The ZBTE Series is ideal for use in this environment.

Zenith ZBTE Series Bypass-Isolation Transfer Switches are the solution when interruption of power during service or testing is not acceptable. Consisting of two major modules-the Automatic Transfer (ATS) and the Bypass/Isolation Switch-the ZBTE Series incorporates the rugged construction of all our ZTE Series automatic switches with a quick make/quick break bypass switch manual load transfer handle and our control/interlock system, which consists of both mechanical and electrical interlocks.

The bypass uses normal failure sensing and a time delay to start the engine automatically if a failure occurs when the ATS has been removed for service-which can be done without disturbing the load.


  • ZBTE - Bypass/Isolation
    The Zenith ZBTE - Bypass/Isolation transfer switch is used in general and mixed load applications.
  •  ZBTSE - Delayed Transition Bypass/Isolation
    The Zenith ZBTED Bypass/Isolation transfer switch is used to transfer of large motor loads, transformers, uninterruptible power supplies (UPS) systems or load shedding to a neutral "center" position.
  • ZBTECT - Closed Transition Bypass/Isolation
    The Zenith ZBTECT Bypass/Isolation transfer switch is used to transfer critical loads where a "no break" transfer is desired with this switch 100msec parallel capability.

Features & Benefits

  • Robust switching mechanisms
    – Suitable for emergency and standby applications on all classes of load, 100% tungsten rated through 400 amps
    – UL 3-cycle (unconditional) short circuit withstand & close ratings
  • Advanced user interface & controls
    – Color graphical display with built-in Help menus
    – System status LEDs and menu-driven soft keys
    – Dedicated control and navigational pushbuttons
    – Front accessible USB programming port
    – Password protected control switches
  • Built-in power quality metering
    – 3-phase current, including neutral, voltage, power, energy, frequency and harmonics (THD)
    – 20 Channel Data Logger with sampling rates user-configurable from 1 cycle to 60 minutes
  • Enhanced connectivity
    – Built-in RS-485 serial and RJ-45 Ethernet
    – Open protocols - Modbus RTU and TCP/IP
    – User-configurable data map
    – Download of event, waveform, and data log to PC
    – Customized control logic using GE FlexLogic
    – Local/remote configuration via EnerVista MX350 Setup software
    – Plug-and-play PC monitoring and control using EnerVista Viewpoint Monitoring software
  • Diagnostics & event recording
    – Power source anomaly events recorder
    – Detailed transfer event reporting
    – Local storage of 256 time-stamped events with 1 ms resolution
    – User-configurable alarms
  • Flexible feature assignment
    – Field modification of control features
    – User-configurable load control contacts
    – Reduced commissioning delays from incorrect configuration
  • Reliability
    Durable solenoid ATS operated mechanisms and robust electronics, tested for severe EMC and environmental conditions
  • Ease of Operation
    Intuitive, color graphical display with built-in Help functions
  • Advanced Troubleshooting
    High-speed event log and data logging
  • Diagnostics
    Advanced system troubleshooting and event reporting
  • Low Cost Installation & Quick Commissioning
    Built-in networking for reduced hardwiring, centrally located customer connections; simple field modification of features without need for factory service
  • Flexible & Expandable for Changing Site Needs
    Modular, expandable I/O and field-upgradeable features for maximum flexibility
  • Power Quality Metering
    True PQ metering, including waveform, harmonics and high-speed event capture
  • Simple & Low-Cost Facility Integration & Monitoring
    Built-in networking, customizable User Data Map, and plug-and-play monitoring using EnerVista Viewpoint Monitoring software


Product Scope

  • Ratings 40 to 4000 amperes
  • 120-600Volts
  • 50 or 60 Hz
  • 2, 3 or 4 poles
  • Open type, NEMA 1, 3R, 4, 4X and 12 enclosures

Service Offering

  • 75 Factory-Direct Power Quality field service engineers
  • Over 150 Factory Authorized Service Centers throughout North America and International
  • Remote Monitoring and Diagnostics Project Management
  • Retrofit, upgrades, and preventative maintenance
  • Toll-Free 7x24 Customer Service call center @ 1-800-637-1738
  • Replacement parts, extended warranty and full-coverage service contracts