WA Series AC Magnetizing Coils

WA Series AC Magnetizing Coils


WA-Series can best be described as light duty and portable MPI Magnetizing Coils. No matter which ID Size, WA-Series Coils have an AC Output of over 4000 Amp Turns on a 115 Volt/60 Hertz Power and over 5000 Amp Turns with 230 Volt/50 Hertz Power. The 4 models of WA-Series Coils are the WA-8, WA-10, WA-12 and WA-14, with respective ID sizes of 8" (203mm), 10" (254mm), 12" (305mm), and 14" (356mm). Very economically priced. AC Coils are effective for finding surface breaking defects on work pieces with little wear, but where stress results in high load concentrations that in turn can result in component failure. Note the AC field does not penetrate the surface of the workpiece, this is called “skin effect”.


  • Four ID sizes: 8” (203mm), 10” (254mm), 12” (305mm) and 14” (356mm)
  • 4000 Amp Turns at 115VAC / 60Hz
  • Great for detecting surface and near surface cracks, seams, etc.
  • All cords are high-quality cable standard SOOWXTREM H07RN-F
  • An Energize Button is offered as an option for inspectors requiring extra mobility (WA-Series Coils come standard with a foot switch)
  • Both the Foot Switch and Energize Button activate the AC Module, which handles the full electrical load of the WA-Series Coils. The amperage capacity of these modules far exceeds the requirements of the Coil, which give the Foot Switch and Energize Button extended life

Technical Specifications

WA Series Specifications

Model ID Size 115V/60Hz 230V/50HZ Output Coil Weight
WA-8 8” /201 mm 13 Amps 6.5 Amps 4,250 14 pounds (6.8kg)
WA-10 10” /254 mm 15 Amps 8 Amps 4,150 16 pounds (7.7kg)
WA-12 12” /305 mm 16 Amps 9 Amps 4,050 18 pounds (8.6kg)
WA-14 14” /355 mm 16 Amps 9 Amps 3,875 22 pounds (10.5kg)


All Coils are 3 ⅝” (22mm) Wide

Kit Includes

WA Series Coils Includes

  • Coil
  • Power Cord, 8' (2.5m) long
  • Foot Switch Cord, 5' (1.5m) long

Note: Both cords are SOOWXTREM H07RN-F, a high-quality cable standard

Description Part # Saved Price Select Option Add to
Western Instruments WA-8 AC Magnetizing Coil MT-WI-WA-8 Request Pricing
Western Instruments WA-10 AC Magnetizing Coil MT-WI-WA-10 $1,425.00
Western Instruments WA-12 AC Magnetizing Coil MT-WI-WA-12 $2,775.00
Western Instruments WA-14 AC Magnetizing Coils MT-WI-WA-14 $3,950.00
Western Instruments Foot Switch - Standard (Available for WA-Series as well) MT-WI-FS $250.00
Western Instruments Removable Foot Switch (Available for WP-Series as well) MT-WI-RFS $350.00
Western Instruments Water Resistant Foot Switch MT-WI-WRFS $550.00