Megger MIT330 Insulation Resistance and Continuity Tester
Test, save and organise your results with the Megger MIT330 Insulation Resistance and Continuity Tester. Built for electricians who need clear measurements and usable records, it combines insulation testing at 250V, 500V and 1000V with continuity testing and USB downloading.
Store 1000 test results on site, group them by job reference and transfer them to a computer when convenient. Supplied download software and CSV export help you move from taking measurements to reviewing results.
A backlit display, illuminated range selection and included SP4F switched probe make the MIT330 practical for everyday electrical testing.
Request your Megger MIT330 quote from Acutest today. Get advice on the tester and accessories you need.

Megger MIT330 Key Features:
- Three insulation test voltages: Select 250V, 500V or 1000V
- Insulation resistance measurement: Test up to 999MΩ
- Results memory: Save 1000 test results for later review
- Job references: Organise results from different locations
- USB downloading: Transfer stored measurements to a computer
- CSV export: Review results in a spreadsheet using the included download software
- Clear display: Large 20mm characters, an analogue arc and backlighting
- Switched probe included: Start insulation tests using the SP4F probe
- Site protection: Rubber-armoured construction and an IP54 rating
Why choose the Megger MIT330?
✓ Keep test results organised
The MIT330’s storage and downloading functions help you manage readings across several jobs. Assign a job reference to a set of measurements so you can separate results from different locations after downloading.
A memory bar graph shows how much storage has been used. Results remain saved when the tester is switched off or its batteries are exhausted.
✓ Make reporting easier
USB transfer and CSV export give you a practical route from on-site measurements to spreadsheet review. You can check and organise downloaded readings without copying each result from the display.
Your results can also be downloaded into Megger PowerSuite Professional for preparing certificates and reports.
✓ Read settings and measurements clearly
The digital readout combines large characters with an analogue arc, helping you follow readings during a test. Both the display and range selection are backlit for work in poor lighting.
Colour-coded ranges make test selection straightforward, while the guide inside the lid keeps basic operating information close at hand.
✓ Work with practical controls
The supplied SP4F switched probe lets you activate insulation testing at the probe. Continuity and buzzer tests start automatically when connected to the circuit.
The rigid display cover folds away during testing and closes to protect the screen afterwards. Safety features include live-circuit detection, continuity test inhibition and a test lockout above 50V.
What Comes with the Megger MIT330?

- Megger MIT330 Insulation and Continuity Tester
- (1002-001) Test Lead Set with Crocodile Clips
- (6220-809) SP4F Switched Probe
- Manufacturer’s Calibration Certificate
- Download Software
Specifications:
| Feature | Specification |
| Insulation test voltages | 250V, 500V and 1000V |
| Insulation resistance range | Up to 999MΩ |
| Continuity range | Up to 100Ω |
| Additional resistance range | 10Ω–1MΩ |
| AC/DC voltage measurement | Up to 600V |
| Lead null | Up to 9Ω |
| Adjustable continuity buzzer | 1–20Ω |
| Results storage | 1000 test results |
| Results organisation | Job reference numbers |
| Computer connection | USB |
| Export format | CSV |
| Backlighting | Display and range selection |
| Ingress protection | IP54 |
| Warranty | 3 years |
❓ Frequently Asked Questions (FAQ)
Q1: What insulation test voltages does the Megger MIT330 offer?
A. The MIT330 provides 250V, 500V and 1000V insulation test settings, with insulation resistance measurement up to 999MΩ.
Q2: Will stored results be lost if the batteries run out?
A. No. Results are retained in non-volatile memory when the instrument is switched off or the batteries are exhausted.
Q3: Can I download results into a spreadsheet?
A. Yes. The MIT330 uses a USB interface and exports results in CSV format. Download software is included.
Q4: Is the SP4F switched probe included?
A. Yes. The supplied SP4F probe allows you to activate insulation testing from the probe.
Q5: What warranty comes with the MIT330?
A. The Megger MIT330 comes with a three-year warranty.
Ask Acutest for your Megger MIT330 price, technical advice or a product demonstration.
▶ Getting started with the Megger MIT300 Series:

▶ Unpacking the Megger MIT300 Series:
