Magnaflux QB-2 Plus Quick Break + Shot Timer

Magnaflux QB-2 Plus Quick Break + Shot Timer


The QB2-Plus provides a quantitative verification of Quick Break function and measures the duration of the magnetizing shot. The QB2-Plus can verify the correct function of AC, HWDC, and FWDC equipment, and verify Quick Break function on 3-phase FWDC units. Shot time and Quick Break voltage are alternately shown on the LCD display after each reading.


  • Simultaneous measurement of Shot Time and Quick Break
  • Can be used with coils and cable wraps over 25 in (64 cm) diameter
  • Quantitative results provide true verification of equipment


Use Recommendations

The QB2-Plus probe is placed inside the coil (or in line with a cable wrap) during a magnetizing shot. Quick Break voltage and Shot Time (in seconds) are alternately shown on the LCD display. A reference table of minimum Quick Break voltages for different coil diameters is included on the back of the meter

Technical Specifications

QB-2 Plus Specifications

Shot Time Range 1-Phase Mode: 0.40 to 5.00 seconds
3-Phase Mode: 0.40 to 2.80 seconds
Shot Time Accuracy +/- 0.02 seconds
Quick Break (3-Phase only) 0 to 30 V +/- 0.2 V
Display Dot-matrix LCD
Power Supply DC 9V Battery

Note: The QB2-Plus does not carry a CE mark and is not labelled to EU standards.

Specification Compliance

QB-2 Plus Compliance

For use with systems conforming to:

  • ASTM E709
  • ASTM E1444
  • ISO 9934
  • ASTM E3024
Description Part # Saved Price Select Option Add to
Magnaflux QB-2 Plus Quick Break Time + Shot Timer MT-MX-628989 $2,540.00