Metrel BetaPAT PLUS MI3304 PAT Tester

Top of the range dual voltage PAT tester from Metrel. Comes supplied with free PATLink Pro PAT software and a calibration certificate.
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Metrel BetaPAT Plus MI3304 PAT Tester

This product is discontinued, it has been replaced by the Metrel OmegaPAT XA.

The Metrel BetaPAT MI3304 Plus PAT Tester is one of the most comprehensive PAT testers on the market.

The BetaPAT Plus is a Dual Voltage PAT Tester suitable for periodic testing, troubleshooting or as a tool for electrical safety testing in workshops. The tester can operate on both 230V and 110V supply voltage and is enclosed and well protected in a robust and waterproof case.

The tester itself has taken speed and ease of use into consideration, and has over 100 pre-programmed Auto Tests built into the tester. These test sequences will cover any type of appliance you will be testing, and it makes PAT testing a lot easier and quicker. Should you require any other Auto Test sequences, the user can programme and store up to 50 additional Auto Tests on the BetaPAT Plus. The tester is equipped with a QWERTY keyboard for rapid data entry. Test results and PAT data is stored on the tester (the BetaPAT Plus MI3304 stores up to 6800 results) and can then be downloaded onto the Pat Link Pro Software using a USB or RS232 download lead. Download leads and basic software comes supplied with the tester.

Using the optional PATLink Pro PLUS Software enables viewing and advanced analysing of PAT results (comparison/trends for selected appliances). Test reports can be compiled and printed off, and results can even be uploaded back onto the BetaPAT Plus MI3304 when re-testing appliances. This means that you would not need to re-type any information into the PAT tester when re-testing an old appliance. When memory has been uploaded back onto the tester you can recall that information by using either the QWERY keyboard or the optional Barcode Scanner. This rapidly speeds up the testing procedure when testing the same appliances more than once.

The long term reliability of this PAT tester is guaranteed by Metrel's 3 year warranty. If you ave a requirement to carry out Flash testing, please see the OmegaPAT Plus MI3305 which has this as an added feature.

What's In The Box?

  • Metrel BetaPAT PLUS MI3304 PAT Tester
  • Metrel PATLink Pro Software
  • Removable Earth Bond Lead
  • PRCD Test Probe
  • USB Download Lead
  • RS232 Download Lead
  • Instruction Manual
  • Manufacturers Calibration Certificate
  • 3 Year Manufacturers Warranty

Earth Bond Continuity

  • Currents: 100mA DC, 4A, 10A or 25A AC
  • Measuring Range: 0.00-19.9 ohms

Insulation Test

  • Voltage: 250V or 500V DC
  • Measuring Range: 0.000 - 199.9 Mohms

Substitute Leakage

  • Voltage: 40V
  • Measuring range: 0.00- 1.99 mA

Touch Leakage

  • Measuring range: 0.00- 19.99 mA

Differential Leakage

  • Measuring range: 0.00- 19.99 mA

Load Test

  • Measuring range: 0 - 4 kVA


  • Output Voltage: 40V
  • Faults: open, short, crossed, multiple fault

Portable RCD

  • Trip-out time readout: 0 ms - 1999 ms (½xI∆N) ±3 ms
  • Test currents: (I∆N)10 mA, 15 mA, 30 mA 0 ms - 300 ms (I∆N) ±3 ms
  • Test current multipliers ½,1, 2 and 5xI∆N 0 ms - 150 ms (2xI∆N) ±3 ms
  • Test modes: single, autotest 0 ms - 40 ms (5xI∆N) ±3 ms

Trip out times

  • ½xI∆N: t∆ > 300ms
  • 1xI∆N: t∆ < 300ms
  • 5xI∆N: t∆ <40ms


  • Dimensions: 335 x 160 x 335mm
  • Weight: 8.4kg