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Martindale FD550 Elite Fuse Finder Kit

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  • Digital fuse finder kit with multi-level sensitivity for accurate fuse identification.
  • Bar graph display shows progressive indication of signal strength.
  • Includes a built-in non-contact voltage indicator.
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rrp £86.00

now £52.00 (Ex. VAT) £62.40 (Inc. VAT)

rrp £86.00


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"A simple and easy way to find the fuse or circuit breaker you're looking for."

  • Description

    Martindale FD550 Elite Fuse Finder - MARFD550

    The Martindale Elite Fuse Finder receiver FD550 brings microprocessor controlled multi level sensitivity to fuse and breaker identification. A 6 segment bargraph gives progressive indication of signal strength allowing even faster identification. In addition the Elite receiver includes a non-contact voltage detector and can operate in two modes:

    Automatic, which has a memory and the ability to automatically adjust sensitivity for foolproof identification. Manual mode, which allows very rapid fuse finding using the bargraph.

  • Specification


    • Voltage rating: 230V
    • Frequency range: 30-70Hz
    • Switching frequency: Approx. 5Hz
    • Transmission pulse width: approx. 1.7μS
    • Transmission pulse amptitude: 20A max
    • Temperature range: -10°C to 40°C at max 60% RH
    • Dimensions: Approx: 65 x 65 x 46mm
    • Weight: 65g
    • Earth Leakage: Nil
    • Power supply: From mains
    • Power consumption: Approx. 1W
    • Overvoltage category: Cat III/300V
    • Pollution degree: 2
    • Protection Class: IP20


    • Tracing depth for fuse assignment: approx. 0 - 10cm, depending on local conditions.
    • Sensitivity setting: via on/off potentiometer
    • Temperature range: -10°C to 40°C at max 60% RH
    • Dimensions: 202 x 32 x 22mm.
    • Weight: 150g (Excluding battery)
    • Protection class: IP20
    • Power supply: 9V battery, MN1604/PP3, IEC 6LA61 (alkaline only)

    Voltage Indicator

    • Voltage range: 40 - 600 V
    • Sensitivity: Indication distance from a flat PVC 1mm2 twin and earth cable suspended in free space. 3mm at 110V AC 50Hz. 23mm at 240V AC 50Hz.
    • Frequency range: 50Hz to 50kHz
    • Indication: Red LED and audible tone (2kHz) in the presence of an AC voltage. Green LED indicates internal battery condition.
    • Operating temperature: -5° to 40°C
    • Not recommended for use on high energy circuits.
    • Units are EMC compliant.
    • There are no user serviceable parts in the transmitter or receiver.
  • Supplied Accessories

    • FD650/R receiver
    • FD500/T transmitter
    • Battery
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  • Delivery Information

    At we understand the importance of a reliable delivery service when shopping online. Especially when the goods are often essential to your working day. If your goods are required by a certain date please feel free to contact us for an honest and realistic indication whether this can be met.

    We use DPD/Interlink for all larger items and Royal Mail for smaller items and accessories. With DPD/Interlink you will receive a 1 hour delivery window on the day of delivery via e-mail/text so you will not have to wait around all day. We also offer delivery options for goods required urgently on certain products, all which are sent by DPD/Interlink on a fully traceable and manageable service.

    Our charges for UK deliveries:

    • FREE Delivery (on select products only): typically 3-5 working days*
    • Standard Delivery at £4.95: 2-3 working days
    • Next Working Day Delivery (on select products only) at £7.50
    • Pre-Noon Next Working Day Delivery (on select products only) at £9.50*
    • Pre-10.30am Next Working Day Delivery (on select products only) at £18.50*
    • Saturday Pre-Noon Delivery (on select products only) at £14.50*
    • Sunday Pre-Noon Delivery (on select products only) at £14.50*

    *UK mainland only

    NOTE! For next working day or Saturday/Sunday delivery options the order MUST be placed no later than 3pm on the working day before delivery is required. After 3pm, please arrange with our staff before selecting a priority delivery service. Priority services are available to UK mainland residents only.

    Customers outside the UK: exports to many countries all over the world. Prices for shipping vary on location and weight/dimensions. Costs are calculated for certain countries at the checkout. If your country is not included in this list please e-mail with your name, address and the items you would like to order for an accurate shipping quote.