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SCR Power Controllers
Blue Mark Single Phase Power Control Unit THV-A1 (20 to 200 amps)
Single phase power control unit : THV-A1 Series
  • Control type selection
    (Phase-angle/continuous zero-cross/zero-cross)
  • Communication function
  • Detects heater break of non-linear load
  • Ramp-up, Ramp-down
  • Gradient setting
  • Output Limiter High and Low
  • Base-up Setting (output bias)
  • Output mode selection
    (proportional electric power/voltage/phase angle)
  • Digital input for Auto/manual
As the THV-A1 single phase power control unit can be used with control modes selectable from constant voltage, constant current and constant power, it can be used with such heaters as noble metals (Platinum and molybdenum), super Kanthal, and SiC (Silicon Carbide) that have changing resistance in accordance with temperature changes.
Optional features like heater break alarm and communication can improve system safety and establishment of a supervisory system.
Spec. Sheet Download Manual Download
Software Software PROTEM2


Blue Mark Single Phase Power Control Unit THV-1 (20 to 100 amps)
Single Phase power Control Unit THV-1 Series The THV operates at 100 up to 240V AC and automatically selects power supply frequency 50 or 60Hz. Three types of control modes are selectable: phase control, zero-cross control to suppress high frequency noise, or zero-cross control.
The THV series of 20A and 30A carries UL/CSA approvals. And over 45A of THV series carries cUL approvals. (After December, 2005 models)

Spec. Sheet Download Manual Download


Blue Mark Single Phase Power Control Unit THV-40 (High Voltage Type)
The THV-40 Series designed for load voltage 380 to 480V AC.
  • Control type selection
    (Phase-angle/continuous zero-cross/zero-cross)
  • Communication function
  • Detects heater break of non-linear load
  • Ramp-up, Ramp-down
  • Gradient setting
  • Output Limiter High and Low
  • Base-up Setting (output bias)
  • Output mode selection
    (proportional electric power/voltage/phase angle)
  • Digital input for Auto/manual
Spec. Sheet Download Manual Download
Software Software PROTEM2


Blue Mark Three Phase Power Control Unit THW-A (20 to 100 amps)
Three Phase Power Control Unit THW-A Series The THW-A Series is available with constant current control, constant power control or constant voltage control.
It makes the THW-A Series suitable for any application with three phase power control.
With either the ramp-up (soft-start) or ramp-down (soft-down) set to zero, the THW-A quickly responds to input changes, and can be used in applications like RTP (Rapid Thermal Process).
Manual Download


Blue Mark DIN rail mounting type Single Phase Power Control Unit
SSNP (Phase control type), SSNZ (Zero-cross control type)
DIN rail mounting type Single Phase Power Control Unit SSNP, SSNZ The SSNP and SSNZ are slim width of 21.5mm.
  • Compact size, even with a heatsink
  • Easily mounted on a DIN-rail
  • Linear output
  • Rapid response
Manual Download

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