Black Friday Deals
All Seaward Products

Seaward PrimeTest 250 PAT Tester


This product is no longer available

or Call 01642 931 329 to discuss alternatives

Free Accessory Bundle
5 Bundle Deals Available...

The second-most powerful model in the PrimeTest series, and the upgraded version of Seaward's PrimeTest 100, the PrimeTest 250 is a handheld portable appliance tester (PAT) designed to test a wide variety of electrical appliances.

There are several differences between the PrimeTest 250 and the PrimeTest 100. The most obvious is the inclusion of extra testing buttons on the front of the instrument; the PrimeTest 250 PAT tester can perform more tests than the PT100, including specific tests for testing RCD operation and for testing 3 phase equipment (requires optional 3 phase adapter). This makes the PrimeTest 250 suitable for PAT testing in practically any application ranging from offices, schools and shops to industrial applications such as factories and workshops.

Each of the six buttons on the front of the tester is assigned to a specific test or appliance type; just connect up the appliance you want to test, press the button and the PT250 will automatically cycle through applicable testing procedures for that appliance. Results are shown with clear Pass/Fail indication on screen alongside full testing results.

Seaward's PrimeTest 250 is capable of carrying out earth continuity, insulation resistance, equivalent leakage, IEC lead, protective conductor current, touch current, 3 phase differential leakage current (requires 3 phase adapter accessory - sold separately), RCD trip time and power socket testing procedures. Touch current and protective conductor current measurements require the tester to be connected to the mains in order to proceed.

This PAT tester is designed to be used on all types of machinery and is ideal for testing class I and class II appliances, cords, IT equipment and other appliances. It's also certified for use on 3-phase machinery, allowing specific three-phase equipment used in factories, workshops and other locations to be tested for electrical safety.

Seaward PrimeTest 250 PAT Tester Key Features

  • Easy to use manual PAT tester (no built in memory)
  • Shows Pass/Fail indication plus full testing results
  • Lightweight, handheld and portable design
  • Automatic test sequences assigned to six buttons on front of the tester
  • Suitable for testing all appliance types, including 3 phase and RCD (requires optional accessories)
  • Long life battery power
  • Test earth continuity
  • Test insulation resistance at 250 and 500V DC
  • Equivalent leakage tests
  • IEC lead tests
  • Protective conductor current tests
  • Touch current tests
  • 3 phase differential leakage current tests (requires accessory)
  • RCD trip time tests
  • Power socket checks

What's Included?

  • Seaward PrimeTest 250 PAT Tester
  • Soft Carry Case
  • Earth Bond Test Lead
  • Crocodile Clip
  • 240V IEC Lead
  • 6 x AA Batteries
  • Instruction Manual
  • PATGuard Evaluations Trial Software
  • Mains Lead

Seaward PATMobile App

The Seaward PATMobile App (available for free on GooglePlay**) is a simple and powerful manual data entry app with an eclectic array of features. It is optimised for use with Seaward’s PrimeTest PAT Testes and is capable of the following:

  • Recording and managing data
  • Creating PDF reports
  • Creating CSV reports
  • Exporting CSV and PDF reports via email
  • Scanning 1D and 2D barcodes (using the smartphone’s/ tablet’s camera)
  • Scanning Seward Apollo QR codes (using the smartphone's/ tablet’s camera)
  • Auto-incrementing asset IDs
  • Incorporating photos captured using the smartphone’s/ tablet’s camera into asset reports and records
  • Printing labels wirelessly via Bluetooth when used with Seaward’s Test n Tag Pro Printer and compatible labels (sold separately)

In addition to the above capabilities, the Seaward PATMobile App includes the following features:

  • A powerful search and filter for accessing required data
  • A dashboard for managing assets enabling the user to see when appliances are out-of-date
  • Integrated calculators for risk-assessments and resistance
  • User customisation: the user can upload a company logo and signature for inclusion in reports

The Seaward PATMobile App’s intuitive and fast user interface makes accessing the required features, settings and records quick and easy.

The Seaward PATMobile App is an effective and easy-to-use manual data entry app that can be used to keep records, manage test data, and create and share CSV and PDF reports. For further information regarding the Seaward PATMobile App, and for a brief introduction to using this app’s features, please see the following video.

** Please note that, currently, the Seaward PATMobile App is ONLY available for Android smartphones/ tablets with an operating system of Android 5.0 or above.

PrimeTest 250 Bundle Offers

Getting a Seaward PrimeTest 250? You may also be interested to know that also has a number of exclusive PAT testing kits that come with the tester and bumper packs of accessories for a vastly reduced price.

We've put these kits together to give PAT professionals everything they need on a daily basis when out PAT testing, so why not take a look at the comparison table below and see if one of our kits appeals?

Item Description    PrimeTest 250 PAT Tester Essentials Kit (Bundle 1) PrimeTest 250 PAT Tester Professional Kit (Bundle 2)

Deluxe Carrying Case

Keep all of your equipment safe and in one place with this large-size carrying case!

(appearance of case may vary depending on current stock)

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)

PAT Testing Training DVD +
Online Exam & Certificate for 1 Person

Not yet trained as a PAT tester? With our training DVD, you can train yourself from the comfort of your own home or workplace! The DVD includes access to our online examination for one person (you can also purchase additional exams for other team members, if needed).

The PASS Handbook of Portable Appliance Testing

Everything you need to know about PAT testing is outlined in this comprehensive book. Inside, you'll find useful information, colour-coded sections, photographic examples and much more to help you PAT test on a daily basis.

PASS PAT Testing Logbook

Keep a record of all of your testing with our logbook. The book includes carbon-copied records, allowing you to keep one for yourself and give the other to customers or keep for a reference.

Microwave Leakage Detector

When PAT testing, it's common practice to check microwaves are also not emitting high levels of radiation. With our microwave leakage detector you'll be able to do this testing with ease.

PASSPTA21 - IEC (C13 Female)
to Cloverleaf (C6 Male) PAT Adaptor

You'll need this adaptor to connect your PAT tester to laptop/PC power leads and other similar equipment which has a cloverleaf-shaped connector.

PASSPTA29 - IEC Plug (C14)
to Cloverleaf (C5) PAT Adaptor

This adaptor is used to connect to laptop power supplies, portable projectors and other similar equipment.

PASSPTA28 - IEC Plug (C14)
to Fig 8 (C7) Pat Adaptor

You'll find several appliances such as game consoles, laptop power supplies, audio/visual equipment and more use this type of connector - with this adaptor, you can connect them up to your PAT tester.

CK Tools AV05050 5 Piece Insulated Screwdriver Kit

A handy set of insulated screwdrivers (suitable for live working to 1000V) suitable for a wide variety of applications.
Includes 2 x PZ (1 x 80 and 2 x 100mm) + 3 x slotted (3 x 75, 4 x 100 and 5.5 x 125mm) screwdrivers in a carrying case.

WM1 - 500 x Passed PAT Testing Labels

You'll need these every time an appliance passes a test - just tear one off, fill in the fields (appliance ID, your name, test date and next test due date) and stick on the appliance when done.

WM6500 - 500 x Circular Passed PAT Testing Labels

These circular-shaped PAT labels are great for plug tops and any other appliance. The labels also include space for ticking the month/year the next test is due.

WM12 250 - 250 x Cable Wrap Labels

These passed labels wrap around a wire/cable from an appliance and are recommended for use with power supplies or on appliances where you can't stick a label. They also include space for writing your appliance ID, name, test date and next test date.

WM7 250 - 250 x Failed PAT Testing Labels

You won't need these as often as your passed labels, but you'll need to apply one of these whenever an appliance fails a test. If it does fail, the item should be taken out of service for repair or replacement

Seaward PATGuard Elements Manual-Entry Software

Keep a database of your PAT testing information on your PC and print reports with software. Please note that this software is manual entry; you cannot download directly from the PAT tester and you will need to type in records by hand.

Accessories related to this product:
  1. Seaward PATGuard 3 Elite Software - Non-Subscription
    £478.80 £399.00
  2. Seaward 3 phase adaptors SW3 Star 5 Pin 32A 415V
    £54.00 £45.00
  3. 250 Wm7 Fail Pat Testing Labels
    £7.79 £6.49
  4. Seaward 3 phase adaptor SW3 Delta 4 Pin 16A 415V
    £54.00 £45.00
  5. Seaward Test n Tag Pro Serial Printer (For PrimeTest 250+)
    £294.00 £245.00
  6. Seaward PAT Checkbox for Portable Appliance Testers - Kit
    PAT Checkbox for Portable Appliance Testers
    Lead Time: 1-2 Weeks
    £214.80 £179.00
  7. 500 Wm1 Pass Pat Testing Label Roll
    £11.99 £9.99
  8. Seaward 3 phase adaptors SW3 Star 5 Pin 16A 415V
    £58.50 £48.75
  9. PASS PAT Testing Logbook - Carbon Copy (Branded)
    £11.99 £9.99
  10. Handbook Of Portable Appliance Testing
    £19.99 £19.99
  11. Seaward PATGuard 3 PAT Software
    £145.20 £121.00
  12. Seaward 3 phase adaptors SW3 Delta 4 Pin 32A 415V
    £58.50 £48.75
  13. Pat Training Dvd With Exam And Certificate - Front
    £89.99 £74.99
  14. Metrel MLD100 Microwave leakage detector
    £58.80 £49.00
  15. Seaward NTB-1 Portable RCD  Isolator - Front
    £77.40 £64.50
Part Code382A910

Seaward PrimeTest 250 Technical Specifications

Earth Continuity  
Output Current 200mA minimum into 2Ω
Test Voltage (o/c) 9V DC nominal
Test Duration (Class I Test) 2s nominal
Display Range 0.01 ohm to 19.99 ohm
Pass Value (Class I Test) 0.2Ω
Insulation Resistance  
Test Voltage 250/500VDC @1mA nominal, < 2mA (s/c)
Test Duration (Class I or II) 2s
Display Range 0.01 Mohm to 19.99 Mohm
Pass Value 1.0 MΩ Class I
2.0 MΩ Class II
Equivalent Leakage
Test Voltage 40V Nominal AC 50Hz Open Circuit
Test Duration 2s – 30s nominal
Display Range 0.1 mA to 19.99mA
Pass Value 0.75mA CLI / 0.25mA CL II
IEC Lead Test  
Test Voltage 5V DC nominal
Test Duration Time for test (2s max)
Test Live / Neutral Checks for o/c, s/c and crossed
Protective Conductor Current  
Test Voltage Supply Voltage, max current 13A
Test Duration 30s maximum
Display Range 0.15 mA to 9.99 mA
Pass Value 0.75mA/3.5mA (user selectable with 0.75mA as default)
Touch Current  
Test Voltage Supply Voltage, max current 13A
Test Duration 30s maximum
Display Range 0.10 mA to 5.00 mA
Pass Value 0.25mA
3 Phase Differential Leakage Current (3 Phase Adaptor Accessory Required)  
Test Voltage 3 phase supply voltage
Test Duration Continuous measurement
Display Range 0.10 mA to 9.99 mA
Pass Value 3.5mA
RCD Trip Time  
Test Voltage Mains supply voltage
Test Current 10mA / 30mA rms sinusoidal
Test Current Phase 0°/180° auto switched on alternate tests
Measuring Range 0ms – 500ms
Pass Value 200ms
Power Socket Check  
Input Voltage Range 225 – 254V AC max current 13A UK
Indicates Configuration of Voltage Potential Line potential phase to earth
Line potential phase to neutral
Line potential neutral to earth
2 Reviews
Overall Rating

Write a Review

Write Your Own Review
You're reviewing:Seaward PrimeTest 250 PAT Tester
Your Rating

Subscribe to our Newsletter

International Enquiry