Variable Transformer Air-Cooled Rectifier

C$ C$

The Corrpro® VAYS variable transformer series of air-cooled rectifiers provides a low-cost alternative power source for smaller cathodic protection installations. Combining a compact enclosure with an essentially infinite number of output settings, this rectifier series is an ideal choice for utility and gas distribution systems.

Incoming AC power is stepped down and controlled by the variable transformer and rectified to a controlled DC output. Input-overload and short-circuit protection is provided by magnetic-trip breakers; output protection by means of one-time fuses in the transformer secondary. Primary AC/DC surge protection and secondary surge protection provided by disk-style MOVs. Single meter (switched between amperes and volts) supplied as normal construction with extra meters is available as option.

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  • Compact enclosure combines small size with low cost for many utility applications.
  • Full-wave silicon rectification.
  • AC input surge protection.
  • DC output surge protection.
  • Secondary AC surge protection.
  • Single, switched Amps/Volts 2.5” DC meter.
  • Transformer constructed to Class “H” (180°C/356°F) temperature requirements with a minimum efficiency of 95%.
  • All brass/copper hardware finished in electroless nickel plate for superior corrosion prevention.
  • Wall or pole mounting. 
  • One year warranty, from date of purchase against defective components, and faulty workmanship.
  • Only limited options available to keep size small and the cost economic.
  •  Single phase inputs only: 115, 230 or 460 Volts AC, 60 cycle (50 Hz. optional)
  •  Magnetic trip input circuit breakers and secondary fuses for full overload and short circuit protection
  •  Almost infinite number of output adjustment steps
  •  Output voltage range up to 60 volts DC
  •  Output current range up to 8 amperes DC
  •  Special output or input ratings available on request
  •  Metering: 2 percent meter, temperature compensated
  •  Cooling by natural air convection
  •  Operating ambient: -40° to +45°C (-40° to 113°F)
  •  Cabinet rated type 3R; constructed from 14 gauge mill galvanized steel, finished in 3-5 mils, fusion bond polyester powder paint, white
  •  Stainless steel hardware
  •  CNC cut, fully engraved front panel or lamicoid labels

 The following model is available for online purchase:


See the model code chart below for details.

Option F - Built in current interrupter 

Option L - Fuse Replacement Module

Option W - CRC-100 (Volts/Amps monitoring, alarms, interruption)

Option V - Upgraded lightning arresters

Option Z - 120VAC twist-lock power cable included


Corrpro U.S. Materials

11616 W 59th Street
Sand Springs, OK 74063

Ph: 1.866.CORRPRO
Fax: 713.460.6060


Corrpro Canada Materials & Corrpower Manufacturing

10848 – 214 Street N.W.
Edmonton, Alberta  T5S 2A7
Phone: 780.447.4565