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Megger PAT420 Downloadable PAT Tester

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£1,164.00 £970.00
Lead Time: 1-2 Weeks Free UK Delivery* Delivery Options

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£14.95 (Pre-Noon)
£19.95 (Pre-10:30am)

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Note: Next day delivery is not guaranteed for orders placed after 3:00pm. Prices Ex VAT.

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  • PAT Accessory Bundle
    110V Adapter + Logbook + 1,000 Labels (500 Pass, 250 Cord & 250 Fail) (PATBUNDLE)
  • 110V Adapter + Logbook + 1,000 Labels (500 Pass, 250 Cord & 250 Fail) (PATBUNDLE)
    PAT Accessory Bundle
  • PAT Handbook, Logbook, 500 Pass / 250 Fail Labels
    PAT Handbook + Logbook + 750 Labels (500 Pass & 250 Fail) (PATBUNDLE3)
  • PAT Handbook + Logbook + 750 Labels (500 Pass & 250 Fail) (PATBUNDLE3)
    PAT Handbook, Logbook, 500 Pass / 250 Fail Labels
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This is the Megger PAT420, a professional-grade PAT tester that's also the upgraded version of the Megger PAT410.

New features exclusive to this model include a wider range of earth bond/continuity test currents (200mA, 10A and 20A) to test a wider amount of appliances at full strength (or use the low current 200mA test for IT equipment) and this tester also comes as standard with its own 110V appliance connector, meaning there's absolutely no external adapters required to test your 110V appliances! The 110V connector makes the Megger PAT420 an excellent choice for those working on construction sites or other areas where 110V tools are regularly used*.

*Note: the PAT420 is also suitable for testing 415V equipment and leads; however you will need to use a set of compatible 415V adapters to do so. You can get a set of adapters from us by following this link.

Megger's PAT420 PAT tester is designed to help you create a comprehensive record of your testing results, customers and appliance IDs. With built-in 10,000 record memory storage, a full QWERTY keyboard for making text entries and full support for optional barcode scanners and printers for easier asset management/label printing, the PAT420 provides everything you need for cataloguing your PAT testing results.

Downloading from the PAT420 is simple; just plug in a USB stick, download onto it, and plug into your PC. Results can be exported in CSV format (compatible with programs such as Microsoft Excel) or alternatively you can invest in optional Megger Powersuite software (or third party software such as Simply Pats) to create a full database of your results and gain the ability to create reports and certificates based on your PAT testing data.

The Megger PAT410 is designed to do absolutely all basic PAT tests in accordance with the IT code of practice, as well as more specialist testing modes. It can test both 230 and 110V appliances and includes testing modes such as earth bond/continuity at 200mA, 10A and 25A, insulation testing at 250V and 500V and performs substitute, differential and touch current leakage tests. This tester can also be used for testing extension leads and will check earth bond, insulation, polarity and portable RCDs.

With the PAT420, you can take full control over PAT testing. You can either use the built-in automatic testing routines to speed up your testing, or take full manual control of your tests and adjust the testing times, or the pass limits of appliances.

If you're looking for a professional-grade PAT tester that'll help you test all appliances faster, and let you log all information ready for analysis on a PC, look no further than Megger's PAT420.

Megger PAT420 Downloadable PAT Tester Key Features

  • The upgraded version of the Megger PAT410 - even more features for professional PAT testers!
  • Earth bond/continuity testing at 200mA, 10A and 25A, catering for a wide variety of appliances (NEW for this model)
  • Built-in 110V connector - no need to use external 110V adapters (NEW for this model)
  • Keep track of all of your measurement results with 10,000 record built-in memory storage
  • Download testing results to PC in CSV format (compatible with Excel) or purchase Megger's optional Powersuite software for full database management
  • Easy asset management using the tester using built-in QWERTY keyboard and function keys
  • Manual and automatic testing modes - speed up your testing with automatic test routines, or adjust testing times and pass limits in manual mode
  • Insulation testing at 250V and 500V
  • Substitute, differential and touch current leakage tests
  • Operational VA test
  • Earth bond, insulation, polarity and extension lead tests
  • Portable RCD tests
  • Built-in lead storage pouch
  • Full colour, large-size VGA screen
  • Can be used with optional barcode scanners and printers (sold separately)

What's Included?

  • Megger PAT420 Downloadable PAT Tester
  • Printed Quick Start Guide
  • Full User Guide on CD
  • Calibration Certificate
  • Continuity/Earth Bond Lead + Probe
  • Extension Lead Adaptor (13A)
  • Carry Case w/ Lead/Document Pouch
  • Plug Adaptor IEC C6 - C13 (3 Way 5A PSU)

Optional Megger Powersuite Software

Expand the capabilities of the Megger PAT420 by combining it together with this optional software package.

Powersuite allows you to take full control of your testing results, including allowing the creation of a database where you can manage customers, create customised reports and much, much more.

The software can be purchased separately from the tester by following this link (the software is also included in many of our optional bundles; more information available below).

Exclusive PAT Testing Kits

Available exclusively at PASS, these kits come with everything you'll need to PAT test!

They include all standard manufacturer accessories plus our own additional products.

Item    PAT Essentials Kit (Bundle 1)PAT Business Kit (Bundle 2)
PAT Premium Kit (Bundle 3)PAT Elite Printer Kit (Bundle 4)

UNI-T UT07A Socket Tester

Need to check if your sockets are working right? Just plug this in to a standard UK plug socket and if there's a problem, the socket tester will let you know about it!

(socket tester may vary depending on current stock)

 Yes  Yes Yes Yes

CK Tools AV05050 Screwdriver Set

This bundle pack includes a set of 5 fully insulated electrical screwdrivers which are suitable for live electrical work to 1000V

Yes Yes Yes  Yes

PAT Testing Training DVD + Online Examination for 1 Person

Not trained to perform PAT testing? With our training DVD, you can learn from your workplace or at home how to PAT test!

The course is based on our own full, tutor-lead PAT Competency Course and includes access to our online examination for 1 person.

Yes Yes Yes  Yes

PASS PAT Testing Handbook

A comprehensive, extremely detailed guidebook with useful information, diagrams, pictures and case studies related to PAT testing.

The book breaks down everything from requirements to actually performing testing and is an essential for any PAT tester

Yes Yes Yes  Yes

Microwave Leakage Detector

It's common practice to check microwave radiation levels while you're PAT testing - use this portable, easy-to-use microwave leakage detector to do so

Yes Yes Yes  Yes

IEC Adapter Set

A special bundle pack with three IEC adapters, allowing you to use your PAT tester with various types of IEC cables and power supplies

Yes Yes Yes  Yes

110V Adapter Set

Use these two 110V connector leads to connect your PAT tester to 110V equipment commonly found on construction sites and similar applications

Yes Yes Yes  Yes

Passed PAT Testing Labels

A PAT essential! We include two 500 label rolls in your purchase, ensuring you have everything you need for labelling appliances after testing

Yes, 1000x Yes, 1000x Yes, 1000x  Yes, 500x

1000 x Circular Passed PAT Labels

Uniquely-designed passed PAT testing labels with circular design - ideal for smaller plugs or appliances where you can't easily fit other labels

Yes, 500x Yes, 1000x Yes, 1000x  Yes, 500x

500 x PAT Testing Cable Wrap Labels

These labels wrap around cables, and are great for labelling appliance power leads where you can't fix a suitable label

Yes, 500x Yes, 500x Yes, 500x  Yes, 500x

500 x Failed PAT Testing Labels

You won't need these very often, but if an appliance ever fails testing you should place one of these labels and take it out of use for repair or replacement

Yes, 500x Yes, 500x Yes, 500x  Yes, 500x

Visual Inspection Labels

You should check your appliances over for obvious signs of damage before testing. Look for frayed wires, loose connection and damaged plugs, then place one of these labels on if the appliance passes

No Yes Yes  Yes

Powersuite SoftwareMegger Powersuite Contractor Software

Use Megger's software alongside your PAT tester to download your results to PC and keep a database of all of your findings

No Yes Yes  Yes

PASSPTA27 Barcode ScannerBarcode Scanner

This Bluetooth/USB barcode scanner is great for speeding up your record keeping by using your Megger PAT tester and barcode labels

No No Yes  Yes

Barcode Labels

Pair these up with your Bluetooth barcode scanner and quickly recall your previous records, or make new records, using your Apollo series PAT tester

No No Yes, 2000x  Yes, 1000x

Brother PrinterBrother Printer and Printer Cartridge

Create customised labels when out testing with this portable printer and cartridge pack!

 No  No No  Yes


There are a number of accessories available for the Megger PAT420 Professional Downloadable PAT Tester; please see the table below for further details. For further information please contact our sales team. 

Our SKU Megger's Part Number  Product
1000-766 1000-766 110V Mains Lead Adaptor BS1363 - BS4343
1000-767 1000-767 415V Adaptor Lead (4 Pin) TO BS (16A)
1000-770 1000-770 415V Adaptor Lead (5 Pin) TO BS (16A)
1000-971 1000-971 Pass Test Labels (1000) Green (UK)
1001-227 1001-227 Fail Test Labels (1000) Red
PT-P700 PT-P700 Barcode Printer Brother P700
1001-047 1001-047 Barcode Scanner (USB)
1001-299 1001-299 PATR210 PAT Report Book
2000-551 1001-232 Plug Adaptor IEC C6-C13 
2000-870 1001-233 Continuity/Bond Lead Set 32A 
1001-234 1001-234 Extension Lead Adaptor 230V UK 13A
MEGPTA8 6220-639 Extension Lead Adapter - 110V 
2001-044 2001-044 PAT Accessory Case
2001-372 2001-372 PAT Testing Guide Book
1004-610 1004-610 Lead USB Type A to Type B 1.8m 
MEGPTA22 6121-483 Barcode Labels (Preprinted) - 1000 per roll
90001-010 9001-010 Printer Cartridge for Brother PT-9500PC
2000-962 1006-225 Carry Case PAT300/400/500
MEGPTA12 1007-165 Flash Test Lead 3.0KV 3.5mA (Red)
1004-610 1004-610 Lead USB Type A to Type B 1.8m 
MEGSW1 1000-631 Powersuite Lite - 17th Edition and PAT Certification Software
Please note that the accessories listed above and the attached datasheets are subject to change. Both were correct at the time of publication. 
Accessories related to this product:
  1. Megger Roll of 1000 FAIL Test Labels
    £28.80 £24.00
  2. 250 Wm7 Fail Pat Testing Labels
    £7.79 £6.49
  3. Megger 1006-225 Carry Case for PAT300/400/500 Testers
    £56.70 £47.25
  4. Megger 415V 4-Pin Adaptor Lead to BS1363 16A
    £64.80 £54.00
  5. Megger PAT Certification Full Database Software
    £449.83 £374.86
  6. Megger 1007-165 Flash Test Lead
    £35.10 £29.25
  7. Megger 1001-234 Extension Lead Adaptor
    £16.20 £13.50
  8. 500 Wm1 Pass Pat Testing Label Roll
    £11.99 £9.99
  9. Megger 2001-044 PAT Accessory Pouch
    Megger 2001-044 PAT Accessory Pouch
    Lead Time: 1-2 Weeks
    £60.30 £50.25
  10. Megger 415V 5-Pin Adaptor Lead to BS1363 16A (Adaptor)
    Megger 415V 5-Pin Adaptor Lead to BS1363 16A
    Lead Time: 1-2 Weeks
    £64.80 £54.00
  11. megger bar code scanner usb pat400
    Megger Barcode Scanner (USB) PAT400
    Lead Time: 1-2 Weeks
    £288.00 £240.00
  12. Megger 6121-483 Appliance Barcode Labels
    £78.30 £65.25
  13. Megger 1004-610 Data/ Printer 1.8m Lead - USB Type-A to Type-B
    £9.90 £8.25
  14. Megger PATR210 PAT Test Certificate Book - Front
    Megger PATR210 PAT Test Certificate Book
    Only 1 in Stock
    £26.10 £21.75
  15. Megger Lite including Ultra-mobile PDA software
    £355.50 £296.25
  16. Megger 2001-372 PAT Test Guide Book
    £21.60 £18.00
  17. Megger Roll of 1000 PASS Test Labels
    Megger Roll of 1000 PASS Test Labels
    Lead Time: 1-2 Weeks
    £28.80 £24.00
  18. megger continuity earth bond lead probe black
    £30.60 £25.50
  19. Megger 6220-639 Extension Lead Adapter
    £21.00 £17.50
  20. Megger 1001-232 Plug Adaptor - IEC C6 - C13
    Megger 1001-232 Plug Adaptor - IEC C6 - C13
    Lead Time: 1-2 Weeks
    £15.30 £12.75
  21. Megger 110V Mains Lead Adaptor for PAT Testing
    Megger 110V Mains Lead Adaptor for PAT Testing
    Lead Time: 1-2 Weeks
    £35.10 £29.25
  22. Megger PAT Certification Software
    £246.00 £205.00
  23. Megger 90001-010 Barcode Printer Label Refills for Brother PT-9500PC
    £49.50 £41.25
Part Code1000-752

Megger PAT420 Technical Specifications

Electrical Supply Range 230V ±10 @ 50/60Hz
110V ± 10% + 110V ±10% @50Hz
Bond Test (10A and 25A)  
Open Circuit Voltage 9V AC ±10% ± 0.1V
(supply: 230V 50Hz)
Earth Bond Resistance Accuracy ±5% ± 3 digits (0 to 0.49Ω)
±5% ±5 (0.5 to 0.99Ω)
Display Range 0 to 1.99Ω
Continuity Test (200mA)  
Continuity Test Voltage 9V AC ± 10% ± 0.1V
(supply: 230V 50Hz)
Continuity Resistance Accuracy ±5% ± 3 digits (0 to 0.49Ω)
±5% ± 5 digits (0.5 to 0.99Ω)
Continuity Resistance Resolution 10mΩ (1 to 19.99Ω)
Display Range 0 to 19.99Ω
Insulation Test (250V and 500V)  
Insulation Resistance Accuracy (230V) ±2% ±5 digits (0 to 19.99MΩ)
±5% ± 10 digits (20 to 99.99MΩ)
Insulation Resistance Resolution 0.01MΩ
Display Range 0 to 99.99MΩ
Substitute Leakage Test  
Test Voltage and Frequency 40V AC ±10% nominal mains frequency
Leakage Current Accuracy ±5% ± 5 digits
Leakage Current Resolution 0.01mA
Display Range 0 to 19.99mA
Differential Leakage Current  
Test Voltage Nominal mains 110/230V AC
Test Frequency Nominal mains 50/60Hz
Differential Leakage Current Accuracy ±5% ± 0.05mA (1.0mA to 9.99mA)
±5% ± 0.1mA (0.1mA to 0.99mA)
Resolution 0.01mA
Display/Measurement Range 0.10mA to 19.99mA
Test Duration User-selectable from 1 sec
10 sec to infinity
Touch Current Test  
Test Voltage and Frequency Nominal mains supply
Touch Current Accuracy ±5% ± 5 digits
Touch Current Resolution 0.01mA
Display 0 to 10mA
Operational Test  
Test Voltage and Frequency Nominal mains supply
VA Rating 230V 3700VA
110V 1800VA
VA Accuracy ±5% ± 10 digits (0 to 99VA)
±5% ± 50 digits (100VA to 999VA)
±5% ± 100 digits (1000VA to 3700VA)
Resolution 1VA (0 to 3700VA)
Display Range 0 to 3990VA
Extension Lead Test  
Tests Performed Bond, insulation and polarity
Polarity Test Voltage 12V
Polarity checks Lead ok
Live neutral S/C
Live neutral reversed
Live/neutral O/C
Portable RCD Test  
Test Voltage and Frequency Nominal mains supply
Test Current Accuracy -8% to -2% (1/2 x I)
+2 to +8% (1 x I, 5 x I)
Trip Time Accuracy ±1% ± 5 digits
Trip Time Resolution 0.1ms
Display Range 0 to 1999ms (1/2 x I)
0 to 300ms (1 x I)
0 to 40ms (5 x I)
Fuse Test  
Test Voltage 3.3V
Warning Audible beep if fuse is OK
Operating Temperature -10 to 50°C
Storage Temperature -20 to 60°C
Humidity 90% RH @ -10 to 30°C
75% RH @ +30 to 50°C
Maximum Altitude 2000m
Ingress Protection IP40
Weight 4.4kg
Dimensions 180 (H) x 255 (W) x 320mm (L)
Safety IEC 61010-1: CAT II 300V
EMC IEC 61326-1: 2006
IEC 61326-2-2: 2005
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