Martindale FD550 Digital Circuit Breaker and Fuse Finder Kit

Martindale

£62.00 / £74.40 incl VAT

⚡ Microprocessor-controlled multi-level sensitivity for accurate fuse and breaker identification.
⚡ 6-segment bar graph displays progressive signal strength for faster identification.
⚡ Non-contact voltage indicator for added safety during use.
⚡ Two operational modes: Automatic mode for fool-proof identification and Manual mode for rapid fuse finding.
⚡ Two Year Martindale Warranty

In stock

SKU: MAR-FD550 Category: Brand:

Description

Martindale FD550 Digital Circuit Breaker and Fuse Finder Kit

Product Details:

The Martindale FD550 Digital Circuit Breaker and Fuse Finder Kit is a high-quality, microprocessor-controlled tool designed for precise fuse and breaker identification. Featuring advanced multi-level sensitivity, it allows for efficient and accurate detection of fuses and circuit breakers in a wide range of applications. The digital display, along with a 6-segment bar graph, offers a clear and progressive indication of signal strength, making it easier to identify circuit elements quickly. In addition to its main fuse-finding capabilities, the FD550 includes a non-contact voltage indicator, adding an extra layer of convenience and safety. The FD550 operates in two distinct modes—automatic and manual—giving users flexibility and ease in the identification process.

Key Features:

  • Microprocessor-controlled multi-level sensitivity for precise identification.
  • 6-segment bar graph displays progressive signal strength for faster identification.
  • Non-contact voltage indicator for added safety.
  • Two operational modes: Automatic mode for fool-proof identification and Manual mode for rapid fuse finding.
  • Automatic sensitivity adjustment in automatic mode for hassle-free use.
  • Digital stepping for sensitivity setting in manual mode.
  • Tracing depth for fuse assignment up to approximately 10 cm, depending on local conditions.
  • Compact and lightweight design for portability and ease of use.
  • Complies with EMC standards for reliable performance.
  • CAT III 300V rated transmitter and CAT IV 600V rated receiver ensure safety during use.

What’s Included:

  • FD650/R receiver
  • FD500/T transmitter
  • 9V battery (MN1604/PP3, IEC 6LA61, alkaline only)
  • Instruction manual

Specifications

FD500 Transmitter
Voltage rating230V
Frequency range30-70Hz
Switching frequency5Hz approx.
Transmission pulse width1.7µS approx.
Transmission pulse20A max
Earth leakageNil
Power consumption1W approx.
IP ratingIP20
Supplyfrom mains
Dimensions65 x 65 x 50mm
Weight65g approx.
FD650 Receiver
Tracing depth for fuse assignment0-10cm approx. depending on local conditions
Sensitivity settingvia digital stepping
IP ratingIP20
Supply9V battery, MN1604/PP3, IEC 6LA61 (alkaline only)
Weight135g approx. (incl battery)
Dimensions202 x 32 x 22mm
Complies withEMC standardsTransmitter: CAT III 300V

Receiver: CAT IV 600V

FD550 includesFD650/R receiverFD500/T transmitter

Battery

 

Comparisons

Fuse findingFD500FD550FD650
From wall sockets
From light fittings & distribution boards
Live or dead fuse finding & cable tracing
Analogue detection
Digital detection
Automode
Multiple transmitter capability
Kit includesFD500/R
FD500/T
FD650/R
FD500/T
FD650/R
FD600/T
Leads

 

file:///C:/Users/HP/Dropbox/PC/Downloads/specFD550FD650.pdf

🚚 Testersmans Shipping Policy

Free Mainland GB Delivery Over £150

We offer free delivery on most mainland Great Britain orders over £150 (ex VAT).
This applies across England, Wales, and most of Scotland, excluding certain remote or offshore postcodes.

If your order total falls just short of £150, or you’re a returning customer, feel free to contact us — we may be able to offer a discount code or delivery workaround.
📞 01945 738112 | ✉️ [email protected]


📦 UK Delivery Options

We work with both Royal Mail and DHL to offer reliable and flexible delivery across the UK:

  • Royal Mail – Best suited for lighter parcels and for customers in remote regions, including the Highlands, Islands, and Northern Ireland.
  • DHL – Ideal for most mainland UK orders, providing fast, tracked delivery and excellent reliability for time-sensitive shipments.

Our checkout system automatically displays the available delivery services for your postcode and order weight, ensuring you always see the most suitable options.

Note: Heavy, bulky, or freight-only orders will be charged separately.
Our website is designed for quick, transactional purchases rather than bulk or palletised orders.
Please contact us in advance for a tailored freight quotation if your order falls into this category.


⏱ Dispatch & Delivery Timing

We aim to dispatch all in-stock orders promptly, but delivery depends on both when you order and which service you select.

  • UK orders: placed by 2:00 PM Monday–Friday are usually dispatched the same day.
  • International orders: placed by 2:00 PM Monday–Thursday are usually dispatched the same day.

Orders placed after these times are processed the next working day. This means delivery may occur the following day or later, depending on the courier and service selected.

Once dispatched, your chosen delivery service determines how quickly your parcel arrives:

  • Standard services We use Royal Mail Tracked 24 or DHL Parcel as our ‘Standard’ services. They are not guaranteed to arrive next working day.
  • Premium services (e.g. Royal Mail Special Delivery or DHL by Noon) offer guaranteed delivery windows.

If your order is time-sensitive, we strongly recommend choosing a guaranteed service or contacting us before ordering to confirm availability.

Please note: For logistical reasons, we may occasionally adjust the delivery method selected at checkout. For example, smaller items may be better suited to letterbox-friendly packaging or may be at greater risk of delay or loss via certain services. We actively monitor courier and postal service disruptions—including strikes and delays—and may modify shipping arrangements to help ensure timely and secure delivery.


📅 Busy Periods & Delays

We always aim to dispatch promptly, but delivery times may be affected by:

  • Seasonal demand (e.g. Christmas, bank holidays, or industry shutdowns)
  • Courier network delays outside our control
  • Supplier lead times or calibration requirements for certain equipment

If your delivery is time-critical, please contact us before ordering so we can confirm stock and courier availability.


🌍 International Shipping

We ship worldwide using UPS Express Saver® and other trusted global courier partners. All international shipments are tracked and generally dispatched Monday to Thursday to ensure smooth customs clearance and transit.

Estimated delivery times:

  • Europe: 1–2 working days
  • North America: 2–3 working days
  • Asia-Pacific & Rest of World: 3–5 working days

Delivery times vary depending on location, customs clearance, and local courier performance.


💰 Taxes, Customs & Import Duties

International customers are responsible for any applicable taxes, customs charges, or import duties.
These are not included in our product or shipping prices.

Your courier will typically provide a secure payment link for any import charges once your parcel reaches customs.
If import fees are refused and the parcel is returned, we will issue a refund minus all incurred shipping and return costs.


📍 Using Your Own Courier

If you would prefer to arrange collection via your own courier (UK or international), please contact us before placing your order to coordinate collection from our Wisbech warehouse.


📝 Important Notes

  • Please ensure your delivery address and contact number are correct at checkout.
  • Undelivered parcels may be returned to us after a short holding period.
  • Redelivery or return fees may apply, even if your order originally qualified for free delivery.
  • By placing an order, you confirm your understanding and acceptance of this policy.

Additional information

Weight250 g

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