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PAT420 PAT Tester

Megger PAT420 a powerful PAT Tester with on-board data storage. Tests both 100 V & 230 V appliances, as well as offering bond testing at all three test currents, 200 mA, 10 A & 25 A.

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2526.00 incl. VAT)
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  • Competitive quote
  • Expert technical advice/demos
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Megger PAT420 Downloadable PAT Tester

Megger PAT420, the workhorse of the PAT400 series; tests both 100 V and 230 V appliances, as well as offering bond testing at all three test currents, 200 mA, 10 A and 25 A. This is the tester of choice for full-time industrial or commercial PAT testers.

Large, bright colour display, sufficient onboard memory for 10,000 asset results enables efficient, speedy PAT testing!

The proven long duty cycle, the simplicity of operation, plus the independently verified speed of test make for the best selling PAT Megger has ever produced.

Megger PAT420 simplified menu for quick operation

Five soft-keys give direct access to frequently used functions making navigation through the menus quick and the tester more productive, offering a greater return on investment.  A new feature is the expert and novice modes making testing even faster for the experienced user.

For corporate users, the PAT400 series now has an optional security log-in for controlling access to test parameters and limits, while logging the active user within the results database.

Using a standard USB memory stick, results can be quickly backed up for downloading.  The asset database is accessible via the PAT420 and with a full QWERTY keyboard, rapid data entry or adjustment is possible.

Megger PAT420 Key Features:

  • Expert mode to speed up testing
  • Secure user log-in option
  • Vast on-board memory to keep you on the job longer
  • Continuous operation, no need to stop and wait for the tester to cool down
  • Instant re-start as you move from room to room
  • Soft keys to speed you through the testing process
  • Automatic asset number generation
  • Quick test for instant access to single test functions
  • 10,000 asset on-board data storage
  • Large easy-to-read colour screen
  • Instant re-start
  • 25 A, 10 A and 200 mA “soft” bond test
  • Test lead null
  • Repeated high current bond testing possible
  • Insulation testing at 250 V and 500 V
  • Functional VA load test for 110 V and 230 V appliances
  • Extension and IEC lead testing including polarity, earth continuity, L-N continuity and L-N-E insulation
  • Standard differential leakage test plus
  • Protective conductor or touch current leakage test
  • Substitute earth leakage test at 40 V a.c.
  • Simple RCD test or full 30 mA RCD testing ½ x I,
  • I, 5 x I
  • Integral fuse checker

What comes with the Megger PAT420?

  • Megger PAT420 PAT Tester
  • 13A extension lead adaptor
  • Test and carry pouch
  • Document and accessory wallet (Internal or external mounting)
  • Earth bond / insulation lead
  • Plug adaptor IEC C6 - C13 (3way 5A PSU)
  • Quick-start guide
  • User guide CD
  • Warranty registration card (1 year)


Comparison Chart for: Megger PAT420 PAT Tester

Supply measurement
230 V
110 V
Supply measurement
Earth bond/Continuity
200 mA
10 A
25 A
Bond lead null
Insulation Test
250 V
500 V
Alternative Leakage Tests
Touch current
Operation Test
VA Measurement
Extension Leads Tests
Earth bond
Portable RCD tests
1.5 kV and 3 kV
Other Features
Low-profile light weight
Auto test routine
Manual testing
Fuse check
Colour display
110 V test connection
Configurable tests times
Selectable pass limits
Lead storage pouch
10,000 record on-board storage
Download to USB memory stick
PowerSuite compatible
Product Downloads


Accessory Code Description Price (Ex VAT)
1000-766 110V Mains lead adaptor BS1363 - BS4343 £47.00 ADD
1000-767 415V Adaptor lead (4 pin) to BS (BS1363) 16A £87.00 ADD
1000-770 415V Adaptor lead (5 pin) to BS (BS1363) 16A £87.00 ADD
1000-971 Roll of 1000 PASS Test Labels £35.00 ADD
1001-047 Barcode Scanner (USB) PAT400 £410.00 ADD
1001-227 Roll of 1000 FAIL Test Labels £35.00 ADD
1001-232 Plug Adaptor IEC C6 - C13 (3way 5A PSU) £24.00 ADD
1001-233 Continuity / Earth Bond lead + Probe (Black) £47.00 ADD
1001-234 Extension Lead Adaptor 230V UK 13A £25.00 ADD
1001-299 PAT Test Certificate Book £37.00 ADD
1005-423 Pass/Fail barcode label printer UK (USB) PAT400 £325.00 ADD
1006-225 Carry Case PAT300/400 £83.00 ADD
2001-372 PAT Test Guide Book £30.00 ADD
6121-483 Appliance Bar-code Labels (1-1000) £99.00 ADD
6220-639 Extension lead Adapter (ELA) 110V BS4343 £29.00 ADD
90001-010 Barcode Printer Label Refills (Cartridge) £67.00 ADD