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PrimeTest 250+ Portable Appliance Tester

The PrimeTest 250+ is a versatile, easy-to-use PAT tester designed to deliver all tests required by the IET 5th Edition Code of Practice and BS EN50699, making it an ideal solution for professionals who need simple, reliable, and fast appliance testing.

With USB data transfer, compatibility with Test n Tag printers, and the ability to integrate seamlessly with Seaward’s PATMobile App and PATGuard 3 software, the PrimeTest 250+ streamlines PAT record-keeping and compliance documentation.

Built in Britain and trusted by thousands of organisations, the PrimeTest 250+ combines robust performance with portability, making it suitable for everyday PAT testing across a wide range of environments.

Key Features

  • Full 5th Edition Compliance – Performs all required safety tests (earth continuity, insulation resistance, leakage, IEC lead, protective conductor, touch current).

  • USB Download Capability – Transfer results quickly in CSV format or import directly into PATGuard 3 software.

  • Plug & Print – Works directly with the Test n Tag Pro printer for instant label printing with no setup required.

  • Seaward ‘ZAP’ Technology – Ensures reliable earth continuity measurements even through rust, limescale, or surface contamination.

  • PATMobile App Integration – Enables record keeping, photo tagging, wireless label printing, and mobile reporting on iOS and Android.

  • Lightweight & Portable – Battery-powered (6 x AA) with carry case included.

  • Trusted Build Quality – Durable British-made tester used daily by professionals worldwide.

Technical Specifications

Earth Continuity

  • Output Current: 200mA minimum into 2Ω

  • Test Voltage (o/c): 9VDC nominal

  • Test Duration (Class I): 2s nominal

  • Display Range: 0.01–19.99Ω

  • Pass Value (Class I): 0.1/0.2/0.3Ω

Insulation Resistance

  • Test Voltages: 250/500VDC @ 1mA nominal

  • Test Current: <2mA (s/c)

  • Test Duration: 2s

  • Display Range: 0.01–19.99MΩ

  • Pass Value: 1.0MΩ (Class I), 2.0MΩ (Class II)

Substitute Leakage

  • Test Voltage: 40V nominal AC 50Hz (o/c)

  • Test Duration: 2s

  • Display Range: 0.1–19.99mA

  • Pass Value: 0.5 / 3.5 / 5.0mA

IEC Lead Test

  • Test Voltage: 5VDC nominal

  • Duration: 2s max

  • Tests for o/c, s/c, and crossed polarity

Protective Conductor Current

  • Test Voltage: Supply voltage, max current 13A

  • Duration: 120s max

  • Display Range: 0.15–19.99mA

  • Pass Value: 3.5 / 5.0mA

Touch Current

  • Test Voltage: Supply voltage, max current 13A

  • Duration: 120s max

  • Display Range: 0.10–5.0mA

  • Pass Value: 0.5 / 5.0mA

Standard Accessories

  • 0.5m extension adaptor

  • Earth bond lead

  • 6 × AA batteries

  • Carry case

PrimeTest 250+ Kits

PrimeTest 250+ Pro Bundle

Includes everything needed for fast, professional PAT testing:

  • PrimeTest 250+ portable appliance tester

  • Test n Tag Pro printer (serial model)

  • 4 × Test n Tag printer label rolls

  • PrimeTest checkbox

  • PATBag carry case

Part number: 403A956
With PATGuard 3 software: 403A957

PATMobile Bundle

Transforms manual PAT testing into a digital workflow using the PATMobile App:

  • Test n Tag Pro Bluetooth label printer

  • 4 × Test n Tag label rolls

  • IEC to Cloverleaf adaptor

  • PrimeTest checkbox

  • PATBag carry case

  • Online Guide to PAT Course

Part number: 403A961
Compatible with both iOS and Android.

Optional Accessories

  • Test n Tag Pro Printer (339A933)

  • Label rolls – Small (approx. 400 off, 52 × 25mm) (339A947)

  • 110V to IEC adaptor (344A050)

  • 230V to 110V adaptor (270A076)

  • PATCheckbox (227A910)

  • 3 Phase Leakage Adaptors (16A/32A, Star/Delta)

  • PATBag Carry Case (71G099)

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