Business in a box PAT tester

  • Everthing you need to start a PAT testing business in one box
  • Comprehensive pagage including PAT tester, pad of 50 certificates, pass labels and adaptors
  • Guide to marketing a PAT testing business, how to find clients and how to sell to them
  • Guide to PAT testing, what to test and how to test it
  • Free life-time product support

The Electricity At Work Act requires that electrical equipment used in premises where people are employed or are open to the public is maintain in a safe condition. An acceptable way of showing that the electrical equipment is safe is by performing routine portable appliance testing.

The New ‘Business in a Box’ from Megger includes everything an electrical contractor needs to diversify into PAT Testing. Any competent person can benefit from this package. It includes comprehensive guides on performing PAT testing, and marketing a PAT testing business to help any business or entrepreneur launch and promote this new venture.

Technical Documents
Technical guide
Earth leakage tests of portable appliances
Technical guide
Parallel earth paths
Technical guide
PAT testing IT equipment
Technical guide
Testing 110 V appliances
Technical guide
Testing appliances fitted with RCDs
Technical guide
The Importance and Benefits of Portable Testing
Firmware for PAT300 and 400 series

The PAT300/400 Series portable appliance testers are firmware upgradeable via a Windows PC with a USB interface. Firmware updates are developed and released to add additional functionality to your PAT300/400 Series tester.


i, You must register your PAT300/400 Series portable appliance tester in order to download the update software and associated firmware files.

ii, Install PAT upgrader driver software BEFORE connecting your PAT300/400 Series tester to your computer via the USB interface.

iii, Each PAT400 zip file contains multiple language versions with applicable test groups, please use the correct file corresponding to your region.

Please follow PAT upgrader instructions accompanying the upgrader software. Latest PAT300/400 firmware version 2.50. If using in conjunction with PowerSuite software, an upgrade may be required in order to provide compatibility with the latest firmware.

Do not install firmware version 2.50 if your current firmware version is below 2.10.

Latest firmware version: 2.50 - Released 2014

PAT300 Firmware 2.50
3.1 MB | 04/07/22
PAT release notes v2.50
10.9 KB | 04/07/22
PAT410 Firmware 2.50
12.3 MB | 04/07/22
PAT420 Firmware 2.50
9.2 MB | 04/07/22
PAT450 Firmware 2.50
12.3 MB | 04/07/22