PrimeTest 250 Plus Front on

PrimeTest 250+

IET 5th Edition and BS EN50699 Compliant

The PrimeTest 250+ portable appliance tester is battery powered and handheld to allow for fast and efficient testing with clear PASS/FAIL indication and test result values. It has a comprehensive range of mains and battery powered tests, data storage and label printing features.

- Selectable 250V/500V Insulation test
- Mains leakage testing
- Portable RCD Testing
- Variable Earth Continuity and Leakage pass/fail limits
- Can be used with the Seaward PATMobile App

On-board storage & data mangement
Store up to 999 test records
Reliable earth continuity testing
Features Seaward's zap circuit technology
Label printing capability
Print pass and fail labels using the Test n Tag Pro printer
2 year warranty included
Register your 250+ to extend your warranty

More about the PrimeTest 250+

Enabling simple, professional and fast PAT testing, this versatile tester features all of the required tests of the IET 5th Edition Code of Practice and BS EN50699, along with USB download. It is also fully compatible with the Test n Tag Pro serial printer for quick and easy label printing without any setup required – just plug and print.

Using Seaward’s free datalogger program and pressing a single download key allows test result data to be quickly and easily transferred from the PrimeTest 250+ to PC at the press of a button.

Data is downloaded in a simple CSV spreadsheet format for your PAT records or alternatively it can be imported directly into Seaward’s PATGuard 3 software for more enhanced record keeping, reporting and certification.

Seaward’s unique ‘ZAP’ technology ensures that earth continuity measurements are accurate in situations where other testers struggle to provide reliable measurements, such as measuring through rust, limescale and other surface contamination.

The PrimeTest Series Testers can be used with our free PATMobile App as part of a combined record keeping and reporting solution. The PATMobile App works with the PrimeTest 250+ to enable the input and storage of test records alongside barcode scanning, wireless label printing, photo tagging and mobile reporting.

Built in Britain and used by 1,000’s of organisations every day.

View the PrimeTest 250+ Overview Video

PrimeTest 250 PAT Testing Kits

The PrimeTest 250+ Pro Bundle

This PAT testing kit includes:

  • PrimeTest 250+ portable appliance tester
  • Test n Tag Pro printer (serial model)
  • 4 x Test n Tag printer label rolls
  • PrimeTest checkbox
  • PATBag carry case

Part number: 403A956

The PrimeTest 250+ Pro Bundle is also available with PATGuard 3 software. Part number: 403A957

PATMobile Bundle

The PATMobile accessory bundle has been created to give those using manual PAT Testing equipment the ability to create digital results storage, reporting and labelling solutions when used in conjunction with our PATMobile App

  • Test n Tag Pro Bluetooth label printer
  • 4 x Test n Tag label rolls
  • IEC to Cloverleaf adaptor
  • PrimeTest Checkbox
  • Durable, purpose-made PATBag with compartments for all of your PAT accessories and labels
  • Online Guide to PAT Course

PATMobile is compatible with both IOS and Android

Part number: 403A961

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Optional Accessories

Technical Specifications

Earth Continuity
Output Current 200mA minimum into 2Ω
Test Voltage (o/c) 9VDC nominal
Test Duration (Class I Test) 2s nominal
Display Range 0.01 - 19.99Ω
Pass Value (Class I Test) 0.1Ω/0.2Ω/0.3Ω
Equivalent Leakage
Test Voltage 40V Nominal AC 50Hz Open Circuit
Test Duration 2s
Display Range 0.1 - 19.99mA
Pass Value 0.5 / 3.5 / 5.0mA
Protective Conductor Current
Test Voltage Supply Voltage, max current 13A
Test Duration 120s maximum
Display Range 0.15 - 9.99mA
Pass Value 3.5 / 5.0mA
3 phase leakage current (Requires 3 phase adaptor accessory)
Test Voltage 3 phase supply voltage
Test Duration Continuous measurement
Display Range 0.10 - 9.99mA
Pass Value 5mA
Power Socket Check
Input Voltage Range 225 - 254VAC max current 13A UK
Indicates Configuration of Voltage Potential Line potential phase to earth. Line potential phase to neutral. Line potential neutral to earth
Insulation Resistance
Test Voltage 250/500VDC @1mA nomina
Test Current < 2mA (s/c)
Test Duration (Class I or II) 2s
Display Range 0.01 - 19.99MΩ
Pass Value Class I 1.0MΩ
Pass Value Class II 2.0MΩ
IEC Lead Test
Test Voltage 5VDC nominal
Test Duration Time for test (2s max)
Test Live / Neutral Checks for o/c, s/c and crossed
Touch Current
Test Voltage Supply voltage, max current 13A
Test Duration 120s maximum
Display Range 0.10 - 5mA
Pass Value 0.5 / 5.0mA
RCD Trip Time
RCD Type Plugtop and fixed installation
Test Voltage Mains supply voltage
Test Current 30/150mA rms sinusoidal
Test Current Phase 0°/180° auto switched on alternate tests
Measuring Range 0 – 500ms
Pass Value 200ms/40ms


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