SUPERIOR ELECTRIC  21  Variable Transformer, 120 VAC, 140 VAC, 5 A, 5 A, CW / CCW


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Product Overview

The 21 is a 1-phase 120V CW Variable Transformer with open construction which is primarily designed for back-of-panel mounting. The rated output for the Type 21 Series is 5A for constant current loads. The 21 Series types operate from 120V lines. The tapping arrangement permits an output voltage range of zero to line voltage or zero to 17% above line voltage and can be operated at any frequency between 50 and 2000Hz without reduction in allowable output current.


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Product Specifications, Documents & More

  • Constant Current Load: 5A
  • Impedance: -
  • Input Voltage: 120VAC
  • Knob Rotation: CW / CCW
  • Output Current: 5A
  • Output Voltage: 140VAC
  • SVHC: To Be Advised

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  •  131/1619
  •  132/1619


Availability:  40

  • 40 in stock for same day shipping
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    More stock available week commencing 12/14/15

Price for: Each 1

Minimum order quantity: 1

Order multiple quantity: 1

Price: $239.73 $239.73



Quantity List Price
1 - 2 $239.73
3 - 5 $228.25
6 - 14 $222.51
15 - 24 $215.33
25+ $211.02

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Looking for a replacement brush for variable transformer (part number 21)?
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Suggested part number of replacement brushes is RB21 from Superior Electric.
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