3A Variac Variable AC Power Transformer 0-130 VAC

Brand:| Model: 3A Variac 0~130
An essential component of any test bench, a variac autotransformer allows the user to adjust incoming 110/120 VAC to 0~130 VAC via a dial.
  • Easy operation by the knob on top of the unit
  • Meter makes it easy to see output voltage
  • Tabletop unit has 3A current capacity
Part # 
Weight: 6.5 lbs.  
Your Price
Part # 120-840
Qty:  EA
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Product Details

3A Variac Variable AC Power Transformer 0-130 VAC

A variac is an extremely handy device that allows the user to dial 110/120 VAC wall voltage up or down from 0~130 VAC, measured by a meter on the front of the unit.

Most often, variacs are used on test benches, either to troubleshoot problems, test experimental circuits, or slowly power up vintage electronics to evaluate and perhaps recondition aging internal components.

They're also used in performing arts and cinematography to control lighting. In areas where line voltage runs higher than standard, use of a variac can improve the function and longevity of electronics.

Current capacity: 3A.

3A Variac Variable AC Power Transformer 0-130 VAC
  • BrandParts Express
  • Model3A Variac 0~130
  • Part Number120-840
  • UPC848864002750
  • Product CategoryVariac Variable Transformers
  • Unit of MeasureEA
  • Weight6.5 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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3A Variac Variable AC Power Transformer 0-130 VAC

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3A Variac Variable AC Power Transformer 0-130 VAC

can this be used with a heating mantle rated at 350 Watts, 110 volts. I'd be using the variac mainly to decrease the volts and the heat generated.

Asked by: cocoleka
Well, at 3amp--110volts, you are right at the line. I suggest a higher amp unit for safety. I'm not saying that this won't work, but experience tells me that anything to do with 110/120 volts,[or higher] a safety margin of 10 to 20% insures not just safety, but long useful life of the unit. See suggestions below.
Answered by: Joe from San Francisco
Date published: 2013-10-22

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