SCR Power Controllers


Thyristor Switch for General Heating Applications, Supports Load Currents Up to 350 A

Efficient yet powerful, the Thyro-S power controller is Advanced Energy’s most compact digital thyristor switch.

  • Compact footprint with multiple operating voltages and current ranges
  • Load monitoring, alarm relays, and power measurement
  • Analog and digital communications with optional fieldbus communication options
  • Overview
  • Technical Specs
  • Documents
  • Accessories
  • Service & Support


The highly efficient Thyro-S® thyristor switch delivers accurate, reliable, switch-free performance. Connect to bus systems, use as a stand-alone unit, or use in combination with all established two-point controllers — PLCs or computer systems. With simple mounting, minimal space requirements, quick commissioning, and safe operation, Thyro-S switches are seamlessly integrated into various applications. Status LEDs provide a quick overview of system status and load percentage.


  • Easily install with compact unit footprint and simplified mounting design
  • Reduce peaks and perturbations via the optional Thyro-Power Manager
  • Customize faults, alarms, status, limits, and set points for easy integration to existing control systems
  • Secure isolation between control and power sections for safe operation
  • Optimize load control with up to five control methods


  • Designed for transformer loads
  • Scalable PLC/PAC integration for closed-loop, thermal process control; optional system interface connection of up to eight power controllers to bus module or BasicBus Module (Profibus DPV1, Modbus RTU, DeviceNet, CANopen, PROFINET, Modbus TCP/IP, EtherNet/IP, EtherCAT)
  • DIN-rail mounting up to 60 A systems
  • USB interface for Thyro-Tool software
  • 1-, 2-, or 3-phase versions (2-phase version for 3-phase load without deploying neutral conductor)
  • Rated Voltages

    Up to 500 V

  • Rated Currents

    Up to 350 A

  • Frequency

    47 to 63 Hz

  • Fuses

    Integrated semiconductor fuse

  • Interface

    USB interface

  • Operating Modes

    TAKT and with optional Thyro-Power Manager

  • Safety Certifications

    CE, UL 508 (8 – 350A), Canadian C22.2 No. 14

Specifications are subject to change without notice. Not all options and accessories are available for all models and configurations. Dimensions listed generally refer to standard configurations and module bodies only. Please confirm technical specifications and customizations with a sales representative. Advanced Energy is not responsible for errors or omissions.

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Compare Products



Voltage Range

230, 400, or 500 V

230 to 600 V

24 to 600 V

230 to 690 V

Current Range

8 to 350 A

8 to 1500 A

16 to 1500 A

16 to 2900 A

Operating Resolution

±3.0 %

±3.0 %



Display Screen



Full-graphic LED

2.8 in (71.1 mm) LED touch screen

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