PDI WaveStar Static Switch

PDI WaveStar Static Transfer Switches, 3-pole and 4-pole
Over 20 years of experience has allowed PDI to become the preferred supplier of static transfer switches to mission critical industries. The PDI static transfer switch supplies critical loads with a choice between two available sources of electrical power. By continually monitoring power quality, the WaveStar® switch automatically transfers to an alternate source within a quarter cycle and without interruption of power to even your most sensitive critical loads. WaveStar® STS provides the highest performance power switching solution available


WaveStar® Communications Package

The WaveStar® Communications Package includes

  • Modbus RTU through RS 422/485 port
  • Web enabled through web browser (TCP/IP)
  • SNMP
  • Modbus TCP/IP
  • Email alerts
  • NTP time setting
  • Alarm log download via USB

The Communications Package enhances the overall reliability and availability of power to your facility by:

  • Providing instantaneous access to redundant sources of power
  • Enabling on-line maintenance of upstream equipment
  • Showing real time wave form captures on the color touch screen


  • 3-pole Static Transfer Switches from 150A to 2000A
  • 4-pole Static Transfer Switches from 150A to 800A
  • Close-couple with PDI PDUs to create primary and secondary redundant systems

Transfer Algorithms

  • POG algorithm provides fast transfers, 4 ms or less, 2 ms for manual transfer
  • VSS PDI’s Volt Second Synchronization Mode limits in-rush for 480V systems during initial start up, restarts and transfers to 1.5x in-rush up to 180 degrees out of phase.

Triple Redundancy Systems

True sytem redundancy provides the ultimate in power system reliability.

Compact Enclosure and Modular Interior Design

Modular interior design results in higher quality througout the product line and the new 2000Amp has the smallest footprint in the industry.

Line-and-Match with our Power Distribution Unit (PDU)

To provide a system of power switching and distribution.

Rigorous Five-Step Quality Process:

  1. Vendor quality partnership using PDI designed test equipment and procedures
  2. Functional component testing
  3. Component level tests in simulated STS environment
  4. Module level test
  5. Verification of inal product system performance.