Martindale HPAT425 Fast, Simple PAT Testing You Can Trust
Looking for a reliable Martindale PAT Tester that makes portable appliance testing quick and straightforward? The Martindale HPAT425 is designed for electricians, facilities managers, landlords and maintenance teams who need fast, accurate results without complicated menus or lengthy setup. Lightweight, rechargeable and easy to use, this handheld tester helps you complete routine PAT testing with confidence.
Order the Martindale HPAT425 today and benefit from simple one-button testing, reliable PASS/FAIL results and a free verification certificate included as standard.

Why Choose the Martindale HPAT425?
The Martindale HPAT425 is built for users who want dependable testing with minimal training. Replacing the popular HPAT400, this Martindale PAT Tester combines automatic testing, clear on-screen results and a compact design that is easy to carry between sites.
Whether you‘re testing office equipment, school appliances, rental properties or workshop tools, the Martindale HPAT425 helps you work efficiently while supporting electrical safety compliance.
Automatic test sequences reduce the chance of user error, while the large greyscale display remains easy to read in both bright and low-light environments. The tester is also USB-C rechargeable, making it ideal for engineers who are regularly working on-site. The HPAT425 features automatic Class I, Class II and IEC lead testing, a 200mA IT-safe earth bond test and selectable 250V or 500V insulation testing.
Martindale HPAT425 Key Features:
- One-button automatic testing
- Tests Class I and Class II appliances
- Tests IEC power leads
- Clear PASS/FAIL indication
- IT-safe 200mA earth continuity test
- Selectable 250V and 500V insulation testing
- Suitable for surge-protected equipment
- Lightweight handheld design
- High-contrast greyscale display
- USB-C rechargeable battery
- Fast charging with power-saving mode
- Free verification certificate included
Built for Everyday PAT Testing
The Martindale HPAT425 is an excellent Martindale PAT Tester for organisations carrying out routine portable appliance testing. It has been designed to make testing as simple as possible, allowing users to complete safety checks quickly without sacrificing accuracy.
Its lightweight construction makes it comfortable to carry throughout the working day, while the straightforward interface helps both experienced engineers and occasional users perform tests with confidence.
Unlike more advanced PAT testers that include memory and reporting functions, the Martindale HPAT425 focuses on delivering reliable PASS/FAIL testing with simple operation. This makes it an ideal choice for businesses that need an efficient, cost-effective Martindale PAT Tester for everyday compliance testing.
Safe Testing for Modern Electrical Equipment
Many modern appliances contain sensitive electronics or surge protection. The Martindale HPAT425 includes both 250V and 500V insulation resistance testing, allowing you to select the appropriate test voltage for the equipment being tested.
The 250V option is particularly useful for surge-protected devices, while the IT-safe 200mA earth bond test helps protect electronic equipment during testing. This flexibility allows the Martindale PAT Tester to cover a wide range of portable appliances safely and effectively.
Technical Specifications:
Testing Functions
- Class I appliance testing
- Class II appliance testing
- IEC lead testing
Earth Continuity
- IT-safe 200mA test current
- Test range: 0.01Ω to 20Ω
Insulation Resistance
- 250V and 500V test voltages
- Measurement range: 0.01MΩ to 100MΩ
Display
- High-quality greyscale screen
- Clear PASS/FAIL indication
Power
- Rechargeable lithium polymer battery
- USB-C charging
- Approximately 1,700 complete tests per charge
- Automatic power-saving mode
Safety
- Complies with BS EN 61010-1 safety standard.
What comes with the Martindale HPAT425?

- Martindale HPAT425 PAT Tester
- TL67 earth bond probe
- EX322 IEC adaptor lead
- TC57 carry case
- USB-A to USB-C charging cable
- Instruction manual
- Verification certificate
Optional adaptors are also available for testing 110V appliances, extension leads and equipment fitted with 3-phase plugs.
❓ Frequently Asked Questions (FAQ)
Q1: What can the Martindale HPAT425 test?
A. The Martindale HPAT425 automatically tests Class I appliances, Class II appliances and IEC power leads.
Q2: Is the Martindale HPAT425 suitable for beginners?
A. Yes. The simple one-button operation and clear PASS/FAIL display make this Martindale PAT Tester easy to use, even for users with limited PAT testing experience.
Q3: Can the Martindale HPAT425 test surge-protected equipment?
A. Yes. The selectable 250V insulation test makes the Martindale HPAT425 suitable for testing many surge-protected appliances safely.
Q4: Does the Martindale PAT Tester replace an older model?
A. Yes. The Martindale HPAT425 replaces the HPAT400 and introduces USB-C charging, improved usability and a bright greyscale display.
Q5: Is the Martindale HPAT425 rechargeable?
A. Yes. It features a rechargeable lithium polymer battery with USB-C charging and can perform approximately 1,700 complete tests on a full charge.
Order the Martindale HPAT425 Today
If you need a dependable Martindale PAT Tester that is easy to use, lightweight and built for everyday portable appliance testing, the Martindale HPAT425 is an excellent choice. With automatic testing, selectable insulation voltages and a compact handheld design, it delivers the speed and reliability professionals expect.
Buy the Martindale HPAT425 today and simplify your PAT testing with a trusted solution from Martindale Electric.