Megger MIT400/2 Insulation and Continuity Tester 250/500/100v + 600v CATIV with Hard Carry Case

Megger

£424.50 / £509.40 incl VAT

⚡ Stabilised insulation test voltage 250/500/1000V 
⚡ 600 V TRMS AC and DC voltage measurement 
⚡ Live circuit detection and protection 
⚡ CAT IV 600 V & IP54 
⚡ Weatherproof, rated to IP54
⚡ THREE YEAR WARRANTY

Available on back-order

SKU: MEG-MIT400 Category: Brand:

Description

Megger MIT400/2 Insulation and Continuity Tester 250/500/1000V + 600V CAT IV with Hard Carry Case

Product Description: 

The Megger MIT400/2 Insulation and Continuity Tester is a high-performance testing instrument designed for electrical installations and specialist applications where accuracy, reliability, and safety are paramount. Featuring advanced measurement techniques and a compact, ergonomic design, this tester is built for durability and ease of use. It is over-moulded for increased protection and achieves an IP54 weatherproof rating, making it resistant to dust and water ingress. This model is engineered to provide reliable results while offering a comfortable grip for extended use. With its updated case, back-stand, and battery compartment, the MIT400/2 is designed for rugged environments and features separate access to the fuse for convenience.

The device offers multiple test voltages and includes a variable range from 50V to 1000V in 10V increments, ensuring flexibility in a wide range of testing scenarios. The insulation test results are displayed on a larger digital display with additional information shown on a smaller secondary display, making it easy to view all critical data. This tester also includes advanced continuity testing with an auto-ranging function and options for 200mA and 20mA tests. Its robustness and versatility make it suitable for a range of applications, including manufacturing, electrostatic measurements, component testing, and commercial avionics.

Key Features:

  • Stabilised insulation test voltage with 250V, 500V, and 1000V options
  • 600V TRMS AC and DC voltage measurement capability
  • Live circuit detection and protection for added safety
  • Compact and ergonomic design for ease of handling
  • Auto-ranging continuity test from 0.01 Ω to 1.0 MΩ
  • IP54 weatherproof rating ensures durability in harsh conditions
  • Over-moulded construction for increased protection against impact and environmental factors
  • Digital and analogue display for clear, simultaneous results
  • Auxiliary display for test details such as leakage current, insulation, or circuit voltage
  • Meets international standards including IEC1010, HD384, and BS EN 61557
  • CAT IV 600V rating for safety in high-voltage environments
  • Three-year warranty for peace of mind

What’s Included:

  • Hard carry case
  • Red/black silicone test lead set with probes
  • 1 red & 1 black crocodile clip
  • Information CD
  • 6 x AA Alkaline Batteries
  • Three-year warranty

Megger Part Number – 1004-731


Product Details:


CLICK ON THE IMAGE FOR THE DATASHEET:

MIT400-2 SERIES INSULATION TESTERS MEGGER

Megger MIT400/2 Series Technical Specifications

Test Voltage
MIT 400/2250, 500 and 1000V
MIT 410/2, 420/2 and 430/250, 100, 250, 500 and 1000V
Insulation Accuracy
Test VoltageRangeAccuracy
50V10GΩ±2% ± 2 digits ± 4.0% per GΩ
100V20GΩ±2% ± 2 digits ± 2.0% per GΩ
250V50GΩ±2% ± 2 digits ± 0.8% per GΩ
500V100GΩ±2% ± 2 digits ± 0.4% per GΩ
1000V200GΩ±2% ± 2 digits ± 0.2% per GΩ
Display RangeAnalogue
1GΩ full scale
Resolution
Short Circuit/Charge Current2mA +0% to -50% to EN 61557-2 (2007)
Open Circuit Voltage Insulation-0 +2% ±2V
Test Current1mA at min pass value of insulation to a max of 2mA max
Leakage10% ± 3 digits
Voltage3% ±3 digits ±0.5% of rated voltage
Timer Control60 second countdown timer
NoteAbove specifications only apply when high quality silicone leads are being used
Continuity
Continuity Measurement0.01Ω to 999kΩ (0 to 1000kΩ on analogue scale)
Continuity Accuracy± 3% ± 2 digits (0 to 100 Ω )
±5% ±2 digits (100 to 500kΩ)
(500kΩ to 1MΩ unspecified)
Service Error: BS EN 61557-4
(2007) – ± 2.0%, 0.1 Ω – 2 Ω
± 6.8%
Open Circuit Voltage5V ±1V
Test Current200mA (-0mA to +20mA)
(0.01Ω to 4Ω)
PolaritySingle polarity (default) / Dual polarity (configurable on setup)
Lead ResistanceNull up to 9.00Ω
Voltage
Voltage RangeAC: 10mV to 600V RMS sinusoidal (15Hz to 400Hz)
DC: 0 to 600V
Volt Range AccuracyAC: ±2% ±1 digit
DC: ±2% ±2 digit
Service Error: BS EN 61557-1
(2007) – ± 2.0% ± 2d,
0 V – 300 V AC/DC ± 5.1%
WaveformUnspecified range:
0 – 10 mV (15 to 400 Hz)
For non-sinusoidal waveforms
additional specifications apply
Non-sinusoidal waveforms:
±3% ± 2 digits >100 mV to
600 V TRMS
±8% ± 2 digits 10 mV to 100 mV
TRMS
Frequency
Frequency Measurement Range15Hz to 400Hz
Frequency Measurement Accuracy±0.5% ±1 digit (100Hz to 400Hz unspecified)
Capacitance Measurement (MIT420/2 and MIT430/2)
Capacitance Measurement1nF to 10μF
Capacitance Measurement Accuracy±5.0% ± 2 digits (0.1nF to 1nF unspecified)
Storage (MIT420/2 and MIT430/2)
Storage Capacity>1000 test results
Data DownloadBluetooth wireless
Bluetooth Class II
RangeUp to 10m
General Specs
Battery Life3000 inuslation tests with duty cycle of 5 seconds ON/55 sec off @ 1000V into 1MΩ
DimensionsInstrument: 228 x 108 x 63mm (9.00 x 4.25 x 2.32inches)
Weight600g (MIT400/2) (1.32lbs)

What’s in the box:

  • Megger MIT400/2 Insulation Tester
  • Red/Black Silicone Test Leads with Probes + Clips
  • Owners Information CD
  • 6 x AA Alkaline Batteries
  • Hard Carrying Case
  • THREE YEAR WARRANTY

🚚 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.