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Single Phase Power Controller - 7100A

  • 16 to 250A at 45°C

  • Up to 500V

  • Input current: 0-20mA or 4-20mA

  • Input voltage: 0-5V or 0-10V

Firing modes:

  • Phase angle

  • Fast cycle

  • Single cycle

  • Advanced single cycle

  • Transformer burst firing

  • Suitable for virtually all load types

  • Current limit

Alarm options include:

  • Thyristor short circuit

  • Load open circuit

  • Partial load failure

  • Thyristor over-temperature

Firing Modes

The 7100A is available with a selection of firing modes to suit most applications. It is suitable for controlling resistive loads with high or low temperature coefficient, short wave infrared (SWIR) or inductive loads.

7100A - image
7100A - small image
7100A - small image
7100A - small image


  • Ceramic furnaces
  • Semi-conductor manufacture
  • Induction heating
  • Transformer coupled loads
  • Time/temperature dependant loads

Control Mode

7100A units use one of the following control parameters:

  • RMS load voltage squared V2

  • RMS load current squared I2

  • Load power P (up to 100 amps)

  • Open loop OL

Limits and Alarms

Optional current limit which can work in all firing modes prevents excessive currents from flowing in the load circuit. Optional alarms can warn of thyristor short circuit or load open circuit (GRF alarm). Additionally partial load failure with automatic set up can detect the loss of one out of six parallel loads (DLF alarm). Over-temperature shutdown is provided with 250A fan cooled units with optional alarm.


High speed fuses are recommended for most applications except SWIR. Fuses are available either with or without micro switch indication. 


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