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PrimeTest 100 PAT Tester

The Seaward Primetest 100 PAT Tester ideally suited to low to medium volume testers, small business & tradesmen looking to PAT test their own equipment. Simple to use, battery-powered PAT Tester with large LCD display.

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424.80 incl. VAT)
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  • Competitive quote
  • Expert technical advice/demos
  • Trusted aftercare support




Seaward PrimeTest 100 Portable Appliance Tester

5th edition compliant, user-friendly PAT Tester! The new updated 5th Edition PrimeTest 100 now includes a 250V insulation resistance test for testing sensitive and surge protected equipment.

The perfect minimum of fuss, entry-level tester for those with low volume test requirements; capable of testing Class 1, Class 2, Cables and IT equipment, providing clear PASS / FAIL indication on a large LCD display.

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.

Three test buttons allow the user to select the appropriate test and an internal smart circuit identifies if an appliance or an extension cord is connected.

The tests are Earth Continuity (soft test), Insulation Resistance (500V) and IEC lead test. The Primetest 100 has the capability of basic data logging and label printing when used in conjunction with the Seaward PATMobile app.

The Primetest 100 is tiny compared to the competition; plus being battery operated it‘s lightweight! It fits easily in the palm of your hand and measures only 26 x 10cm.

What can be easier than a simple push-button procedure?

  • Connect your test appliance
  • Simply choose the test you require; either earthed appliance, double insulated appliance, or mains cord testing
  • Push the button
  • This tester gives a simple PASS / FAIL indicator. It could not be easier!

You can also connect the PrimeTest 100 to a power outlet and it will automatically check the socket wiring and mains voltage. It doesn’t get much simpler!

▶ Video: Seaward PrimeTest 100 PAT Tester

Video for Seaward PrimeTest 100 PAT Tester

Seaward PrimeTest 100 Key Features:

  • Tough and light-weight
  • Handheld and battery powered
  • Simple to use push button operation
  • Easy-to-read display with LCD display
  • Shows simple pass/ fail indication
  • Accurate and reliable earth continuity testing

Seaward PrimeTest 100 Electrical/Analysis Test Functions:

  • Mains supply check
  • IEC lead test
  • Earth continuity (200mA)
  • Insulation resistance (500V)
    • 250V insulation resistance test for testing sensitive and surge protected equipment

How does the PrimeTest 100 differ from the PrimeTest 50?

The PrimeTest 100 offers Alternative Substitute Leakage Testing. Alternative or substitute leakage is measured using a technique similar to that used when measuring insulation resistance, although it uses a reduced test voltage, typically 40V AC.  A test voltage is applied between both live conductors (Line & Neutral) and the protective conductor (Earth) during a Class I test, or a test probe connected to exposed metal parts during a Class II test. The resultant current is measured and then scaled to indicate the current that would flow at the nominal supply voltage.

Seaward PrimeTest 100 Perfect For:

  • Basic, low-volume testing
  • Maintenance Staff
  • Schools and Colleges
  • Care Homes
  • Leisure Industry

What comes with the Seaward PrimeTest 100?

  • Seaward PrimeTest 100 PAT Tester
  • Earth Bond Lead
  • 0.5m Extension Adapter
  • 6 x AA Batteries
  • Carry Case

What comes with the Seaward PrimeTest 100 PATBag?

(see dropdown for option)

  • PrimeTest 100 PAT Tester
  • PATBag Carry Case
  • PAT Online Training Course Card
  • 110V adaptor
  • 500 x Passed Labels
  • 500 x Failed Labels
  • Seaward Guide to PAT Testing
  • PAT reference look-up card
  • PAT logbook
  • Quick start video guide
  • Seaward Business Builder CD

Easy Information Management

Unlock extra features with Seaward‘s free and easy-to-use PATMobile App available for use on both Android and iOS devices, the handy app works with the PrimeTest 100 to enable the digital input and storage of pass/fail results alongside barcode scanning, label printing* and photo tagging.
*Print label feature only available for Android device.

▶ Video: Overview of The PATMobile PAT Testing App

Video thumbnail Seaward PATMobile PAT Testing App

Please Note: PrimeTest 100 does not have a backlight


Comparison Chart for: Seaward PrimeTest 100 PAT Tester

Primetest 50Primetest 100Primetest 250+
General Features
On-board memory999 records
Scanner and Printer CompatiblePrinter only (PATMobile app)Printer only (PATMobile app)Printer only
Electrical Test Functions
Accurate Earth Continuity circuit
Mains Supply check
IEC Lead test
Earth continuity200mA200mA200mA
Insulation Resistance500V500V250V/500V
Earth Leakage230V only
Touch Current230V only
Alternative substitute leakage
RCD Test
3 phase leakageRequires adapter
Data Transfer Features
USB download
PC download/uploadDownload only
Remote data transfer via mobile deviceManual entry (PATMobile app)Manual entry (PATMobile app)


Accessory Code Description Price (Ex VAT)
209A910 3 Phase Adaptors SW3 Delta 4 Pin 16A 415V £76.00 ADD
209A911 3 Phase Adaptors SW3 Star 5 Pin 16A 415V £76.00 ADD
209A912 3 Phase Adaptors SW3 Delta 4 Pin 32A 415V £76.00 ADD
209A913 3 Phase Adaptors SW3 Star 5 Pin 32A 415V £76.00 ADD
227A910 PAT Checkbox £290.00 ADD
270A076 230/110V Adaptor £32.00 ADD
270A076 Seaward 110V / 230V Adaptor (270A076) £32.00 ADD
300A002 0.5m Extension Adaptor £21.00 ADD
347A002 Earth Lead fitted with large Fixed Crocodile Clip for PT50/PT100 £30.00 ADD
71G082 Primetest Carry Case £32.00 ADD
91B038 Pass Labels - 500 off £49.00 ADD
91B311 Fail Labels - 500 off £49.00 ADD