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Product Description and Specifications

Series: ZBTE
Applications: Mission, Process, Healthcare Critical
Amperage: 40 – 4,000
Poles: 2, 3 or 4
Voltage: 120 – 600V

The ZBTE Series Bypass/Isolation automatic transfer switch (ATS) is ideal for use in todays 7×24 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


  • UL 1008 listed at 480 VAC
  • CSA C22.2 No. 178 certified at 600 VAC
  • Seismic certified to IEEE-693-2005 at HIGH level with 2.5 amplification factor
  • Seismic certified to IBC-2006 at Ip=1.5 for z/h less than or equal to 1
  • Seismic certified to OSHPD using testing standard ICC-ES AC-156
  • ISO 9001 certified manufacturing plant
  • OSHPD seismic qualifications

Questions? Call us toll free at 1-800-370-3621 or send us a message now. We’re here to help.