Martindale FD650 Elite Fuse Finder Kit

Martindale Electric

Martindale approved distributor and service centre.

The Martindale FD650 digital fuse finder kit allows for tracing of fuses through mains sockets, light fittings and points in a circuit where there is no power socket available.

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Usually Stock or Short Lead Time

£ 112.20 rrp £ 132.00

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(£ 134.64 inc VAT.)

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The  Martindale FD650/R  is  a  combined  AC  voltage  detector  and  fuse  finder  receiver (when used in combination with the FD500/T or FD600/T transmitter).

The Elite Professional Fuse Finder makes identifying poorly labelled fuses and breakers easy without the need to power down each circuit to identify the one you need to work on.

As  a  fuse  finder  the  FD650/R  can  be  operated  with  either  manual  or automatic  setting  of  its  sensitivity  threshold  to  find  the  fuse  or  circuit breaker that produces the maximum signal. In manual mode the press of a push-button will set the sensitivity threshold to bring the detected signal to mid scale on the bar graph.

In  automatic  mode  the  FD650/R  will  automatically  set  the  sensitivity threshold every time a signal of a greater magnitude is detected, to bring it onto the bar graph scale.

In either mode the buzzer will continue to sound when a signal is present, even when the signal is too small to be shown on the bar graph due to the sensitivity setting.

Martindale FD650 Specifications:


  • Transmission Pulse Width: approx 1.7µS width.
  • Transmission Pulse Amplitude: 20A max.
  • Frequency Range: 50 - 60Hz.
  • Temperature Range: -10°C to 40°C at max 60% RH.
  • Earth Leakage: Nil.
  • Mains Supply: 230V, 30 - 70Hz.
  • Power Consumption: 1W approx.
  • Overvoltage: CAT III 300V.
  • Protection Class: IP20.
  • Dimensions: 65 x 65 x 46mm approx.
  • Weight: 60g.



  • Tracing Depth: 0 - 10cm, for fuse assignment (depending on local conditions).
  • Sensitivity Control: Via digital stepping.
  • Temperature Range: -10°C to 40°C at max 60% RH.
  • Protection Class: IP20.
  • Power Supply: 9V Battery (PP3 / MN1604) alkaline only.
  • Dimensions: 160 x 55 x 30mm.
  • Weight: 135g approx.
  • Units are EMC compliant.
  • Martindale FD650 warranty: 2 years.


Includes: FD650, test leads, mini IEC mains lead, soft carry case and instruction manual.

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Martindale FD650 Elite Fuse Finder Kit