EPM 112 Series Solid State Power Controller

The control unit provides power to heating elements while monitoring the temperature of the windshield. It contains two independent channels, each rated for providing 1.4 kW to windshield heating elements.


  • Status reporting via an ARINC 429 on single bus at 100 kHz with 100 ms transmission cycle.
  • Continuous BIT for high reliability operation.
  • Protection against over-current due to wiring or heater elements short circuit and open circuit.
  • Protection against over temperature and failure of sensors.
  • External fail safe contactor control.
  • Temperature Range: -55°C to +85°C.
  • Maximum weight: 600 gr, Typically 500 gr.
  • Dimensions of case: 96mm (W) x 80mm (L) x 43mm (H).
  • Dual control channel, each with 2 independent temperature sens or inputs.