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Seaward PrimeTest 100 PAT Tester - New 5th Edition

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£358.80 £299.00
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England, Wales and most of Scotland.

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Guaranteed Next Working Day Delivery: Pre-Noon


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UK - Highlands & Islands

Includes Northern Ireland (excludes Gibraltar).

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Choose a Special Offer

  • Essential Bundle (1,000 Labels & Logbook)
    Essential Bundle (1,000 Labels & Logbook)
  • Essential Bundle (1,000 Labels & Logbook) SKU: (PAT-ESSENTIAL-BUNDLE)
    Essential Bundle (1,000 Labels & Logbook)
  • 110V Construction Bundle (240V to 110V IEC & Plug Leads)
    110V Construction Bundle (240V to 110V IEC & Plug Leads)
  • 110V Construction Bundle (240V to 110V IEC & Plug Leads) SKU: (PAT-CONSTRUCTION-BUNDLE)
    110V Construction Bundle (240V to 110V IEC & Plug Leads)
  • IT Bundle (3 x IEC Adaptors & Socket Tester)
    IT Bundle (3 x IEC Adaptors & Socket Tester)
  • IT Bundle (3 x IEC Adaptors & Socket Tester) SKU: (PAT-IT-BUNDLE)
    IT Bundle (3 x IEC Adaptors & Socket Tester)
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FREE PAT Accessory Bundle
3 Bundle Deals Available...

The upgraded version of Seaward's PrimeTest 50, the PrimeTest 100 is designed with ease of use in mind with simple, three-button control for fast and convenient switching between testing modes and portable, handheld design for porting from appliance to appliance.

Seaward's Primetest 100 is compliant with the 5th Edition Code of practice and is now capable of;

  • 250V insulation Resistance Test and new settings menu where you can choose the default test voltage (you can switch to the non-default test voltage (250V /500v) by holding down the test key)
  • Select pass-fail values for earth continuity (0.1, 0.2, 0.3Ω) from the menu
  • Long lead testing
  • Class 1 equipment with no exposed parts and a Class 2 FE test sequence
  • Pass-fail limit of 5mA for Equivalent Leakage test

These updates have meant the Primetest 100 can stay relevant whilst still offering the same value for money and easy-to-use features you can expect from the PT100.

This tester is suitable for use in carrying out earth continuity, insulation resistance and substitute leakage with measured test result values.

Want to see how it works? This product guide from Seaward shows the tester in action!

Seaward PrimeTest 100 PAT Tester Key Features

  • An upgraded version of the PrimeTest 50 - displays full results as well as PASS/FAIL indication
  • Compact design - one of the smallest PAT testers available
  • Simple to use - connect your appliance, press one of the three testing buttons and the tester will do the rest
  • Performs earth continuity, leakage, insulation and wire testing
  • Suitable for use on class I and class II appliances
  • Also suitable for testing IT equipment and leads
  • Battery-powered - portability for testing hard-to-access appliances

What's Included?

  • Seaward PrimeTest 100 PAT Tester
  • Soft Carry Case
  • Earth Bond Test Lead with Crocodile Clip
  • IEC Lead
  • 6 x AA Batteries
  • Instruction Manual
  • PATGuard Evaluations Software Package (Free Trial)

Seaward PATMobile App

Designed for use with Seaward's PrimeTest PAT Testers, the Seaward PATMobile App (available for free from GooglePlay**) is a manual data entry app capable of recording and organising data and asset records, as well as producing and exporting PDF and CSV reports. Additionally, when used with Seaward’s Test ‘n’ Tag Printer and compatible labels (sold separately), the Seaward PATMobile App can be used to produce labels. For a comprehensive introduction to the Seaward PATMobile App and its features, please see the following video.


Accessing the required features, functions and settings is made quick and easy as a result of the Seaward PATMobile App’s intuitive and fast interface. Moreover, its powerful and quick search and filter allow the user to view required and relevant data efficiently.

In addition to this, the Seaward PATMobile App’s dashboard enables the user to monitor assets and see which appliances have become out-of-date. Other tools included in this app are integrated calculators for risk-assessments and resistance, auto-incrementation of asset IDs, and support for user-customisation: the user can upload a company logo or signature for inclusion in reports. It is also possible to include images of the appliance, captured using the smartphone's/ tablet’s camera, in records and reports.

The Seaward PATMobile App can also be used for the following:

  • Recording and managing data
  • Creating PDF reports
  • Creating CSV reports
  • Exporting CSV or 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)

The Seaward PATMobile App is a simple-to-use and powerful manual data entry app with a multitude of features and functions.

** 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 100 Bundle Offers

Want even more out of your PAT tester? We supply unique PAT testing kits that you won't find anywhere else, packed full of additional accessories designed to be used everyday in PAT testing applications.

Better yet - you'll save hundreds over buying all of this equipment separately!

Just take a look at the table below to see our kit options for the PrimeTest 100 PAT Tester:

Item Description   PrimeTest 100 PAT Tester Essentials Kit (Bundle 1) PrimeTest 100 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.


Seaward PrimeTest 100 FAQs

We often get asked a lot of questions about the PrimeTest 100 capabilities, functions and other quirks. That's why we've put together this handy FAQs section to answer all of these common questions!

Is The PT100 Suitable For Testing Mains Sockets?

Yes! After switching on the tester by holding down both the class I and class II buttons until it beeps twice, plug a short IEC lead into the tester's IEC socket and the 13A plug end directly into the mains socket.

If the test is a pass, the letters 'LN', 'LE' and 'NE' will be displayed on the left-hand side of the screen. These values will be displayed alongside a tick (√) icon and the word 'PASS'.

If a problem is detected and there's a fault in the socket (e.g. disconnected earth), a cross will be displayed against each portion of the test which failed.

What Does LO LOAd On The Screen Mean And Why Is It Displayed?

You'll likely see this before an insulation test; this is because the PT100 is checking the load (in Watts) of the equipment but it can't read below 200W.

If the wattage of the equipment under test is below that level (for example a 23W battery charger), the LO LOAd icon will be displayed. This is not a fault; it is only indicating that it can't see a load.

To fix, simple press the button again and the tester will continue testing. The usual cause for this display is that you may not have switched the equipment on, in which case you should immediately switch it on and try again.

Does The Primetest 100 Have Any Quirks?

The PrimeTest 100 has some interesting features.

The abbreviations on the screen are as follows:

  • “Rpe” stands for Resistance of Protective Earth and is measured in Ohms.
  • “Riso” stands for Resistance of Insulation and is measured in MegOhms.
  • “Ileak” stands for Touch or Leakage Current and is measured in milliamps.

Seaward PrimeTest 100 Technical Specifications

Earth Continuity  
Test Current ±200mA DC
Display Range 0.00 to 19.99Ω
Pass Value 0.2Ω
Insulation Range  
Test Voltages 500V DC
Display Range 0.2 to 19.99MΩ
Pass Value 2MΩ
IEC Lead Test  
Tests Performed Earth Continuity
Insulation Resistance
Live, Neutral Continuity and Polarity
Equivalent Leakage Class I  
Test Voltage 40V, 50Hz AC Nominal
Display Range 0.10mA to 19.99mA
Pass Value 0.75mA
 Equivalent Leakage Class II
Test Voltage 40V, 50Hz AC Nominal
Display Range 0.10mA to 19.99mA
Pass Value 0.25mA
Power Socket Test  
Input Voltage Range 230V + 10% - 15% AC
Indicators Phase to Earth Voltage
Phase to Neutral Voltage
Neutral Earth
Additional Information  
Weight and Dimensions  800g/26cm (I) x 10cm (w) x 5.5cm (d) 
Power Source 6 x AA batteries
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Manufacturer Part Code 344A910
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