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Metrel MI 3310 SigmaPAT PAT Tester


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Free Accessory Bundle

Downloadable and reliable, the SigmaPAT is great for testing a large number of appliances.

The SigmaPAT is designed to perform every necessary PAT test, including earth bond and continuity resistance at 200mA, insulation resistance, substitute, touch and differential leakage current, IEC cord polarity, TRMS load current, portable RCD, normal RCD and general functionality tests.

Want to speed up your testing? The SigmaPAT is equipped with autosequences which will automatically cycle through applicable testing procedures for a connected appliance. This data can then be stored in the SigmaPAT's memory and downloaded to PC via USB or RS232 connection (software included as standard).

Metrel's SigmaPAT is equipped with a USB port and two RS232 ports. This allows connection to a PC and simultaneous connection to a barcode scanner for quicker scanning of appliance data and also a connection to a printer (barcode scanner and printer sold separately).

Metrel MI 3310 SigmaPAT PAT Tester Key Features

  • Earth bond and continuity resistance testing at 200mA 
  • Insulation resistance measurements (including of isolated accessible conductive parts)
  • Substitute leakage current testing (including of isolated accessible conductive parts)
  • Differential leakage current testing
  • Touch leakage current testing
  • IEC cord polarity tests
  • Leakage and TRMS load current testing using an optional current clamp
  • Portable RCD testing
  • RCD testing
  • Functional test
  • Innovative active polarity function for testing RCD-protected cords while voltage is applied to the tested item
  • Possible to perform fixed appliance testing
  • Built-in auto sequences with 50 custom sequences
  • Bluetooth communication with printers and barcode scanners (sold separately)
  • Can be powered either via the mains or via a battery
  • Support for RFID and barcoding system
  • Project uploading - upload previous test data for retesting applications
  • Trend functionality enables comparison of old and new test results on site
  • Large-size graphical LCD display with 230 x 120-pixel resolution (includes backlight)
  • Over 6000 memory locations
  • Three communication ports (1 x USB and 2 x RS232) for communication with PC, barcode scanner and printer
  • Soft touch keyboard with cursor keys
  • Built-in real-time clock
  • Compatible with Metrel's included software package, PATLink Pro

What's Included?

  • Metrel MI 3310 SigmaPAT PAT Tester
  • Small Soft Carrying Bag
  • Mains Cable 16A
  • Test Lead (Black)
  • Test Tip (Black)
  • Alligator Clip (Black)
  • IEC Test Cable, 2m
  • PC Software PATLink PRO with RS232 and USB Cables
  • Instruction Manual
  • Short Instruction Manual
  • Declaration of Conformity 
  • Production Verification Data
  • 6 Ni-MH Rechargeable Batteries, Size C

Metrel SigmaPAT Bundle Offers

If you're interested in the SigmaPAT, why not get one plus all the accessories you'll need at the same time?

Our exclusive bundle packs include a great amount of PAT accessories for a vastly reduced price - this table outlines the difference between each kit.

Item Description Bundle 1 Bundle 2

Avit 5 Piece Insulation Screwdriver Set

Five screwdrivers insulated to 1000V, with a comfortable grip and durable blades. Supplied in a carrying case. 


Metrel PATLINK Software for BetaPlus and OmegaPlus

Use this software to create PAT testing reports. 


PAT Testing Training DVD with Online Exam and Certificate

Fully accredited training DVD; provides a viable alternative to PAT testing courses.


PAT Adapter - 240V IEC to 100V 16 Amp 3 Pin Socket

Compatible with all PAT testers; facilitates the testing of 3 pin leads and cables; can be used for loop creation.


Microwave Leakage Detector

Use to check the radiation leakage levels of microwaves. Displays radiation leakage levels on its LCD display and will issue an audible and visual alarm when high radiation leakage levels are detected.


IEC Clover Leaf Adapter

Suitable for testing laptop and PC power supply lead; features IEC and cloverleaf connectors and is compatible with all PAT testers.


PASS Handbook of Portable Appliance Testing

A PAT testing reference book with text, illustrations and high-quality guides.


Adaptor IEC Plug (C14) to Fig 8 (C7)

IEC to figure eight adapter; suitable for use with all PAT testers; can be used to test laptop power supplies.


Adapter IEC Plug (C14) to C5

Designed to help test portable projectors and laptop power supplies; converts a standard IEC plug to a Clover Leaf; is suitable for use with all PAT testers.


PAT Adaptor - 240V, 13A Plug to 110V Female 16A, 3 Pin Socket

Suitable for use with all PAT testers and has been optimised for testing in dangerous environments such as construction sites.


UNI-T UT70A UK Socket Tester 

Standard, British, 3-pin Plug design; features LED indicators; can be used to determine the wiring status of UK plugs.


500 Green on White Labels

44 x 34mm; space for the appliance ID, tester name, date and next test date.


Roll of 500 Wrap Labels for Cords

80 x 44mm; features fields for appliance ID, name of engineer, test date, and next test due date.


500 Circular Passed Labels

Space for entering the next test due date; can be customised to include barcodes and company details.


CCD Barcode Scanner with RS232 Connection

Can be used with a variety of PAT testers to quickly scan barcode labels thereby improving testing efficiency.


Roll of 1000 Barcoded Labels Numbered 1-1000

Suitable for use with PAT testers and barcode scanners; each label features a unique code. 


Roll of 1000 Barcoded Labels Numbered 1001-2000

Suitable for use with PAT testers and barcode scanners; each label features a unique code. 


500 Blue Visual Inspection PASS Labels

Waterproof and resistant to sun damage; includes space for additional information.

Part CodeMI3310

Metrel MI 3310 SigmaPAT Technical Specifications

Earth Bond Resistance Readout - test current set to 200mA    
Range Resolution Accuracy
0 to 1.99Ω 0.01Ω ±(5% of reading + 3 digits)
2 to 9.99Ω 0.01Ω ±10%
10 to 19.9Ω 0.1Ω ±10%
Insulation Resistance, Insulation - S Resistance (250V DC, 500V DC)    
Range Resolution Accuracy
0 to 0.5MΩ 0.001MΩ ±(10% of reading + 5 digits)
0.501 to 1.999MΩ 0.001MΩ ±(5% of reading + 3 digits
2 to 19.99MΩ 0.01MΩ
20 to 199.9MΩ 0.01MΩ
Differential Leakage Current (230V AC)    
Range Resolution Accuracy
0 to 19.99mA 0.01mA ±(5% of reading + 5 digits)
Touch Leakage Current (230V AC)    
Range Resolution Accuracy
0 to 3.99mA 0.01mA ±10% of reading + 5 digits
Subleakage Current, Subleakage - S current (40V AC)    
Range Resolution Accuracy
0 to 19.99mA 0.01mA ±(5% of reading + 5 digits)
Power/Functional Test (230V AC)    
Range Resoluton Accuracy
0 to 4kVA 0.01kVA ±(5% of reading + 3 digits)
Clamp Current    
Range Resolution Accuracy
0 to 9.99mA 0.01mA ±(5% of reading + 10 digits)
10 to 99.9mA 0.1mA ±(5% of reading + 5 digits)
100 to 999mA 1mA ±(5% of reading + 5 digits)
1A to 9.99A 0.01A ±(5% of reading + 5 digits)
10 to 24.9A 0.1A ±(5% of reading + 5 digits)
(P)RCD Testing - Single, Autotest (10mA, 15mA, 30mA)    
Range Resolution Accuracy
0 to 300mA (1/2 x IΔN) 1ms ±3ms
0 to 300ms (IΔN) 1ms
0 to 40ms (5 x IΔN) 1ms
General Specs    
Power Supply Voltage 9V DC (6 x 1.5V batteries or accu, size C) 230V AC
Operation 10h
Working Temperature Range 0 to 40°C
Maximum Relative Humidity 85% RH (0 to 40°C) non-condensing
Display 240 x 128 dot matrix display with backlight
Memory 6000 memory locations
Communication Ports 2 x RS232 (9pin D sub, female)
USB (connector type B)
Overvoltage Category CAT II / 300V
Protection Classification Double insulation
Protection Degree Case IP50 / Connectors IP 20
Dimensions (W x H x D) 31cm x 13cm x 25cm
Weight 5kg
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