Megger MFT1721-BS Multifunction Tester with Hard Carry Case 18th Edition Compliant
Product Details:
This latest series of multifunction installation testers adds one to the nomenclature and vastly to the value of these testers. The range of 3 instruments is expressly for testing low voltage electrical installations to BS7671.
They provide all the tests required to complete the necessary electrical certification for industrial, commercial and domestic fixed wiring installations.
MFT1721, the most popular of the range of 18th Edition testers, with auto RCD testing and phase rotation, 3-phase RCD testing and current measurement with the optional clamp.
With an additional 100V insulation test range, true RMS voltage measurement, mV sensor input and Type B RCD testing.
Key Features:
System voltage and frequency measurement TRMS
Insulation test at 100 V, 250 V, 500 V and 1000 V Including input protection against live circuits up to 600 V even when insulation test is locked-on
Continuity resistance at 200 mA or 15 mA
Automatic start – no need to press TEST so leaving both hands free to hold probes
Resistance range up to 100 kΩ with fast continuity buzzer at selectable thresholds
Earth loop test
2 and 3 wire non-trip range
2 wire Hi current including phase to phase
Prospective fault current measurement up to 20 kA
RCD testing
What’s in the Box:
Megger MFT1721 Multifunction Installation Tester
Complete set of unfused Test Leads, Probes & Croc Clips
Megger end-of-line Calibration Certificate
SP5 Switched Remote Probe
Megger Neck Strap
UK Mains Plug 3 wire test lead
Printed Quick Start Guide
Full User Guide on CD
Three Year Guarantee
Specifications
Insulation Test
Ranges: 100V, 250V, 500V & 1000V
Test Voltage Display
Adjustable Buzzer Threshold
Continuity & Resistance
200mA & 15mA Test Current
Adjustable Buzzer Threshold
Loop Testing Ranges
2-Wire Non Trip Loop Test L-PE 50V-280V
2-wire Hi current L-N 50 V ~ 280 V
2 wire phase to phase L-L 50 V ~ 500 V
PSCC and PFC (20 kA max.)
Max Zs display
R1 R2 value
Touch voltage display on faulty earth
RCD Testing
1/2I, I, 5I and ramp RCD test
Auto RCD test
Type AC, A and S RCDs
Type B (pure DC) RCDs
Programmable RCD
3-phase RCD (no earth)
10, 30, 100, 300, 500 and 1000 mA RCD
Voltage & Frequency
10V – 600V AC / DC Voltage
True RMS
Leakage current measurement
Phase Rotation
Frequency Range: 15Hz – 400Hz
Additional Information
Bright Easy-to-Read LCD Display
Current Measurement with Optional Clamp
Free Megger Calibration Certificate
Free Warranty Upgrade to 3 Years
Dust & Weatherproof to IP54
CAT IV 300V Safety Rating
What’s in the Box:
Megger MFT1721 Multifunction Installation Tester
Complete set of unfused Test Leads, Probes & Croc Clips
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.