H5 Heat Controller

The H5 is a small accessory unit which can be used to control any pulse driven thyristor (SCR) contactor or AC switch. The H5 can be applied to any situation requiring control of an AC switch, such as resistance welding equipment, industrial process heating etc.




  • Easy control from a potentiometer or automation systems
  • Versatile
  • Precise control
  • International
  • Dual outputs make it easy to dynamically switch transformer taps.
  • Soft start. Minimises inrush transients.
  • Easy integration for automation.
  • Simple installation
  • Protects Thyristors and/or Transformer.
  • Maintenance friendly.
  • Easy connection
  • Direct connection of control potentiometers.


  • 0 to 10 V control inputs.
  • Continuous or timed operation.
  • Timer function 0...1 s / 0...10 s.
  • 50/60 Hz operation
  • Synchronous heat / tap change.
  • 1st half-cycle delay.
  • Handshake signals.
  • Din-rail mounting
  • Thermal contact input.
  • Diagnostic indication
  • 2-part plug-in terminal block connectors
  • 10V reference output

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