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United Automation, TPSR-25, Thyristor Power Controller

23 In stock - FREE next working day delivery available
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RS Stock No.:
Mfr. Part No.:
United Automation
COO (Country of Origin):
UnitsPer unit
1 - 4£27.31
5 - 9£26.82
10 - 19£25.72
20 - 49£23.61
50 +£22.38

25A High Power, PSR-25 and TPSR-25 with Thermistor option

Full wave ac phase-angle controller capable of regulating loads up to 6 kW (25 A) at 230 Vac. The controller provides a variable phase-controlled output to the load dependent on the value of the potentiometer wired across connections 3 & 4. The thermistor option allows proportional control of blower speed in response to temperature. It is suitable for the regulation of fan speeds in heating, ventilation and air-conditioning systems.

Low thermal impedance and high isolation
Operates down to 100mA load current
Internal snubber


Select for use a plastic housed potentiometer with a plastic shaft.

Maximum Operating Temperature+65 °C
Minimum Operating Temperature0 °C