Need to convert mains power to a variable voltage for testing purposes? This Variac transformer from our trusted RS PRO range can output voltages ranging from 0 to 240 V AC. You can adjust its output reliably with its clockwise-turning knob and dial.
The transformer offers a smooth linear output without waveform distortion, so your devices won't malfunction or overheat. The silver-plated commutator helps deliver high efficiency with a low risk of overloading.
This benchtop varivolt transformer is compliant with the EU's Restriction of Hazardous Substances (RoHS) directive, meaning it contains only minimal levels of any environmentally harmful materials. It also conforms to ATDI/ESD S20.20:2014 and BS EN 61340-5-1:2007 standards, so it won't damage your equipment through electrostatic emissions. Please note devices of this type do not provide mains isolation.

• Enclosed construction
• Standalone mounting
• Length of 230 mm
• Depth of 140 mm
• Width of 140 mm
• Operating frequency range of 50 to 60 Hz
• Power rating of 720 VA
• Weight of 6 kg
• Primary current rating of 3 A
• Primary voltage rating of 240 V AC
• Secondary voltage range of 0 to 240 V AC
• Single phase
• Wire termination type