QVR/S – High Surge with 17A, 230v

Variable AC Regulator, Switched Potentiometer

£36.99 ex. VAT

Quantity discounts
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£36.99 £35.14 £33.38 £31.72


Discover unparalleled power control with our Voltage Regulators, meticulously designed to maintain voltage stability within a compatible range for your electrical components. Specifically crafted variable regulators for quartz lamps ensure precise control and stabilization of voltage supplied to lamps, optimizing performance in various applications.

Phase-Angle Regulators for Power Distribution Efficiency: In electrical power distribution systems, our phase-angle regulators shine. Correcting phase angle differences between parallel-connected electrical transmission systems, they expertly manage power flow. This ensures that each system operates at its maximum capacity, enhancing overall efficiency.

Guard Against Surges with High Surge Option: Experience ultimate protection with our regulators. A High Surge, a transient wave of current, voltage, or power, is effectively managed by our regulators, providing a robust defence in power systems. Safeguard your equipment against sub-cycle overvoltages with a duration of less than a half-cycle of the normal voltage waveform.

Key Features:

  • Versatile Voltage Control: These variable phase-angle regulators are robust, compact, and enclosed units designed for 230V up to 17A single-phase mains-driven loads. Enjoy fully adjustable voltage outputs ranging from zero to maximum, catering to diverse applications.
  • High Inrush Current Handling: The inclusion of a large TRIAC ensures the unit can expertly manage high inrush currents, providing a safety margin crucial for industrial installations.
  • Optional Extras for Front Panel Mounting: Customize your setup with optional adhesive-backed silver labels and hairline knobs, simplifying front panel mounting for a streamlined appearance.

Applications: Ideal for a diverse range of applications, including:

  • Ovens
  • Fish & Chips Fryers
  • Restaurants
  • Hospitality Industry
  • Quartz Lamps / Heat Lamps
  • Moulder Machines
  • Dryers
  • Some Inductive Loads, e.g., Transformers and Motors

Top Features:

  • Variable 0-98% Output for precise control
  • On/Off Switched version (QVR’s) for added versatility
  • Single Hole Fixing for easy installation
  • Robust and Compact design for durability
  • Large TRIAC for Inrush Protection enhancing safety
  • High Surge Option for robust surge protection in power systems

Empower your operations with our advanced Voltage Regulators, ensuring seamless performance and unparalleled protection against surges. Choose the right variant for your needs and experience advanced power control today.


  • QVR/S – Switched Potentiometer
Maximum RMS on-state current17A
Minimum Operating Current200mA
Triac Limiting RMS on state Current41A
Peak one cycle surge @ 20mS400A
I²t for fusing112A²s
Isolation voltage2500V rms
Maximum recommended unit temperature70°C
Maximum cable temperature105°C
Maximum recommended unit load at 20ºC ambient, (without extra heatsink)10A
Maximum recommended unit load at 40ºC ambient, (without extra heatsink)5A
Mains supply +/-10% 230VAC
Mains Frequency50/60 Hz

Additional information

Rated Current




Switching Mode



United Automation

Technical Support
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