Megger MIT330 Insulation and Continuity Tester (MIT330-EN)


£544.50 / £653.40 incl VAT

⚡Designed for Electricians by electricians
⚡3 year warranty from Megger
⚡ Data Storage (1000 Results)
⚡ IP54 Weatherproof
⚡ Insulation Testing: 250V 500V & 1000V
⚡ (Test Range 1000M Ohms)

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Megger MIT330 Insulation and Continuity Tester MIT330-EN

Product Details:

The ultimate insulation and continuity tester for any electrician.

The Megger MIT330 is a powerful and versatile insulation and continuity tester that can handle any tough application. Whether you need to test insulation at 250V, 500V, or 1000V, measure continuity up to 100 Ohms, or check voltage and resistance, the MIT330 can do it all with accuracy and ease.

The MIT330 also lets you store and download over 1000 test results to your computer via USB. You can assign a job reference number to each test, making it easy to organize and manage your data. You can also use the supplied Download Manager software to export your results to CSV spreadsheets or Microsoft Excel. If you need to create professional reports or certificates, you can opt for the Megger Powersuite Professional software, which offers a range of features and templates.

Other key features;

  • User-friendly interface with colour-coded ranges, a user guide in the lid, and a locking test button for hands-free operation. It also comes with a switched test probe that allows you to activate insulation tests from the probe itself.
  • Built to last, with a tough rubber armoured case and a self-contained protective cover. It has a backlit display that lets you see the results and the selected range in the dark. It is also weatherproof to IP54 standards, meaning it can withstand dust and water splashes.
  • Range of safety features to protect you and the tester from incorrect use. It has a safety interlock that prevents unsafe connection of test leads, safe contact detectors that prevent damage if the tester is connected to a live circuit, a live voltage warning that alerts you when a circuit voltage over 25 V exists, a safety lockout that prevents the test from operating when the circuit voltage is over 50 V, and a continuity check that prevents a continuity test or buzzer test on a live circuit.
  • The MIT330 meets or exceeds the UK and International Wiring Regulations, including requirements of BS7671 and VDE 0413 parts 1 and 4, HD 384, IEC 364, NFC15-100, NEN3140, ES59009 and EN 61557. It also meets the requirements of IEC 61010-1 for safe connection to a 440 V Installation Category III supply (600 V Phase to Earth).
  • A Job reference number can be selected for a range of results, allowing separate locations to be tested with the same tester and easily separated when downloaded. This is useful for large-scale projects or multiple sites that require different documentation or analysis.
  • A memory bar graph acts as a ‘Fuel Gauge’ showing how much memory has been used. This helps you keep track of how many results you have stored and how much space is left for more tests. You can also delete unwanted results to free up memory.
  • Test results are downloaded to CSV (Comma Separated Variable) spreadsheets, and can be imported into Microsoft Excel. This allows you to manipulate, sort, filter, and graph your data as you wish. You can also share your results with others or print them out for reference.
  • If certificates or reports are required, the results can be downloaded directly into Megger Powersuite Professional with a range of features for creating professionally finished documentation. You can choose from various templates, customize your layout, add logos and signatures, and generate PDF files. You can also store and manage your data in a secure database.

The MIT300 series has applications in all aspects of domestic, commercial and industrial electrical contracting, building maintenance, testing, inspection and servicing. Combining both Insulation testing and continuity testing, each instrument caters for all aspects of fixed wiring installations. Further applications can be found in panel building, testing of motors, generators, switchgear and power tools, street lighting and low volume manufacturing environments etc. All the MIT300 range is supplied with a full 3 years warranty.

Getting Started with the MIT330 is easy as watching this video from Megger about the MIT300 series;

Order yours today and enjoy the benefits of a reliable, easy-to-use, and safe tester.

Megger MIT300 Series Technical Specifications

Nominal Test Voltage MIT310, 310A, 320, 330: 1000V, 500V, 250V (DC)
MIT300: 500V, 250V (DC)
Measuring Range 10kΩ to 999MΩ on all ranges
Short Circuit Current 1.5mA nominal
Test Current on Load 1mA at min. pass values of insulation (as specified in BS7671, HD 384 and IEC 364)
Accuracy (at 20°C) MIT300, 310, 320, 330: ±3% ± 2 digits up to 10MΩ, ±5% up to 100MΩ, ±30% up to full scale
MIT310A: <2.5% of scale length (or 30% of reading 200kΩ to 10MΩ)
Measuring Range 0.01Ω to 99.9Ω (0-50Ω on analogue scale)
Open Circuit Voltage 5V ± 1V
Short Circuit Current MIT300, 310, 320, 330: 205mA + 10mA -5mA
MIT310A: 200-250mA
Continuity Accuracy MIT300, 310, 320, 330: ±3% ± 2 digits
MIT310A: ±2.5% of scale length (or 30% of reading 0.2 to 2kΩ)
Measuring Range 0-2/20/200/2kΩ
Open Circuit Voltage 1.5V ± 0.5V
Zero Offset Adjust MIT300, 310, 320, 330: 0 – 9Ω
MIT310A: 0 to 0.5Ω
Continuity Buzzer MIT300, 310: operates at <5Ω MIT 320, 330: adjustable from 1Ω to 20Ω MIT310A: operates at <5Ω MIT300, 310, 320, 330: response time <20ms MIT310: response time <100ms
Resistance Range (MIT320/330)
Measuring Range 10Ω to 1MΩ
Open Circuit Voltage 5V
Short Circuit Current 1.5mA
Accuracy (at 20°C) ±5 ± 2 digits up to 100kΩ
Measuring Range (MIT310A) 0 to 2kΩ (refer to continuity)
Voltage Range
Measuring Range 0 to 600V AC (50/60Hz) or DC
Accuracy (at 20°C) MIT310, 320, 330: DC or AC (50/60Hz): ±1% ± 2 digits
MIT310A: ±2.5% of scale length for 50/60Hz
Temperature Coefficient <0.1°C per °C on all ranges
Default Voltmeter
MIT310, 320, 330 >25V AC or DC is applied display will operate as a voltmeter
MIT300 Beeps and flashes V on the display
MIT310A All modes including OFF
Test Inhibit If more than 50V is detected testing will be inhibited

What’s In The Box?

  • Megger MIT330 Insulation & Continuity Tester – MIT330-EN
  • Robust fitted carry case
  • 2 Wire Lead Set
  • USB Download Lead
  • Shoulder Strap
  • Calibration Certificate issued by Megger
  • Product documents CD
  • 3 Year Manufacturers Warranty

This video is an example of the quality of products included with the MIT310. The only difference with this purchase is the MIT330 is included instead:

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