- Martindale HPAT550 PAT Tester
- TL67 Earth Bond Probe
- EX322 IEC Adaptor Lead
- TC57 Carry Case
- USB-A to USB-C Cable
- TL178 Null Pin on Keyring
- Instruction Manual
- Verification Certificate
- Simple one-button PAT tester with a high-quality colour display and a simple PASS/FAIL indication
- The HPAT550 is able to conduct Automatic Class I, Class II, and power lead tests
- Supplied with a range of accessories, including a carry case for simple transportation
Related Categories
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Find out more on our delivery information page.
- Simple one-button PAT tester with a high-quality colour display and a simple PASS/FAIL indication
- The HPAT550 is able to conduct Automatic Class I, Class II, and power lead tests
- Supplied with a range of accessories, including a carry case for simple transportation
Related Categories
Martindale HPAT550 PAT Tester
The Martindale HPAT550 PAT Tester is an easy-to-use, simple one-button PAT tester which features a high-quality colour display and simple PASS/FAIL indication. This reliable instrument is able to conduct Automatic Class I, Class II, and power lead tests, and is powered by rechargeable batteries, with the ability for simple charging through the inbuilt USB-C port. Its portable, lightweight, and rugged design make this the ideal tool for testing in all locations, with a bright colour display also furthering the HPAT550's reach.
The HPAT 550 is supplied with an extension lead adaptor, an earth bond probe with clip, a USB-C to USB-A cable for charging, and a carry case which allows for the instrument and accessories to be transported safely and with ease. The tester also offers selectable 250V and 500V insulation test voltages, as well as being able to perform safe 200mA earth continuity testing.
Martindale part number: HPAT550
Key Features
- Lightweight and portable design for easy transportation and application
- Features a high-quality colour display
- Clear and simple PASS/FAIL indication with measured values
- Offers automatic testing Class I, Class II, and IEC power lead tests
- Selectable 250V or 500V insulation test
- 200mA earth bond test
- Is USB-C rechargeable, with power save mode and fast charge support available
Martindale HPAT425 vs HPAT550 vs HPAT650
| HPAT425 | HPAT550 | HPAT650 | |
|---|---|---|---|
| Class I / Class II test | ✓ | ✓ | ✓ |
| PASS/FAIL indication | ✓ | ✓ | ✓ |
| Test values displayed | - | ✓ | ✓ |
| 200mA Earth continuity test current | ✓ | ✓ | ✓ |
| Insulation Test Voltage 250V & 500V | ✓ | ✓ | ✓ |
| Lead Test | ✓ | ✓ | ✓ |
| Reachargeable (via USB-C) | ✓ | ✓ | ✓ |
| Sequenced test mode | ✓ | ✓ | ✓ |
| Single test execution mode | - | - | ✓ |
| Memory (100 results) | - | - | ✓ |
| Selectable limits | - | - | ✓ |
| Substitute leakage test | - | - | ✓ |
What's In The Box?
| No |
Earth Continuity
Insulation
Power
Environmental
General
|

Please see our terms and conditions for full details of TM Care & Protect.

Everything you’re likely to require for the next 3 or 5 years:
✅ Annual calibrations included
No further calibration costs for either 3 or 5 years
✅ Free collection and return for annual calibration
No hidden postage costs when it’s time for calibration
✅ ‘Zero-Downtime’ for the life of your care plan
Free loan equipment should your purchase ever need sending away for repair
✅ Anti-theft protection
Each care plan includes a SmartTrace Forensic Marking kit that acts as a deterrent for your test equipment and other tools
✅ Instrument cleaning kit
Cleaning kit included with each TM Care & Protect plan
Our hope is that TM Care & Protect will bolster our commitment to support you throughout your journey with us, providing you peace of mind from the hassles of annual servicing, potential tool theft and loss of earnings.
Ensures complete reliability, minimised downtime and peace of mind. TM Care & Protect packages include:
✅ Annual Calibration
No further calibration costs for up to 5 years.
✅ Zero Unplanned Downtime
In case of any unforeseen repairs, we provide FREE loan instruments so you can continue working.
✅ Theft Deterrent Kit
Each care plan includes a SmartTrace forensic marking kit: The UK's most powerful theft deterrent. Use on your test equipment, van and tools.
✅ No Shipping Cost
Includes collection and return deliveries when it's time for calibration.
✅ Instrument Cleaning Kit
Avoid preventable issues by keeping your test equipment clean.
Our hope is that TM Care & Protect will bolster our commitment to support you throughout your journey with us, providing you peace of mind from the hassles of annual servicing, potential tool theft and loss of earnings.
Please see our terms and conditions for full details of TM Care & Protect.
Martindale HPAT550 PAT Tester
The Martindale HPAT550 PAT Tester is an easy-to-use, simple one-button PAT tester which features a high-quality colour display and simple PASS/FAIL indication. This reliable instrument is able to conduct Automatic Class I, Class II, and power lead tests, and is powered by rechargeable batteries, with the ability for simple charging through the inbuilt USB-C port. Its portable, lightweight, and rugged design make this the ideal tool for testing in all locations, with a bright colour display also furthering the HPAT550's reach.
The HPAT 550 is supplied with an extension lead adaptor, an earth bond probe with clip, a USB-C to USB-A cable for charging, and a carry case which allows for the instrument and accessories to be transported safely and with ease. The tester also offers selectable 250V and 500V insulation test voltages, as well as being able to perform safe 200mA earth continuity testing.
Martindale part number: HPAT550
Key Features
- Lightweight and portable design for easy transportation and application
- Features a high-quality colour display
- Clear and simple PASS/FAIL indication with measured values
- Offers automatic testing Class I, Class II, and IEC power lead tests
- Selectable 250V or 500V insulation test
- 200mA earth bond test
- Is USB-C rechargeable, with power save mode and fast charge support available
Martindale HPAT425 vs HPAT550 vs HPAT650
| HPAT425 | HPAT550 | HPAT650 | |
|---|---|---|---|
| Class I / Class II test | ✓ | ✓ | ✓ |
| PASS/FAIL indication | ✓ | ✓ | ✓ |
| Test values displayed | - | ✓ | ✓ |
| 200mA Earth continuity test current | ✓ | ✓ | ✓ |
| Insulation Test Voltage 250V & 500V | ✓ | ✓ | ✓ |
| Lead Test | ✓ | ✓ | ✓ |
| Reachargeable (via USB-C) | ✓ | ✓ | ✓ |
| Sequenced test mode | ✓ | ✓ | ✓ |
| Single test execution mode | - | - | ✓ |
| Memory (100 results) | - | - | ✓ |
| Selectable limits | - | - | ✓ |
| Substitute leakage test | - | - | ✓ |
What's In The Box?
- Martindale HPAT550 PAT Tester
- TL67 Earth Bond Probe
- EX322 IEC Adaptor Lead
- TC57 Carry Case
- USB-A to USB-C Cable
- TL178 Null Pin on Keyring
- Instruction Manual
- Verification Certificate
| No |
Earth Continuity
Insulation
Power
Environmental
General
|

Please see our terms and conditions for full details of TM Care & Protect.

Everything you’re likely to require for the next 3 or 5 years:
✅ Annual calibrations included
No further calibration costs for either 3 or 5 years
✅ Free collection and return for annual calibration
No hidden postage costs when it’s time for calibration
✅ ‘Zero-Downtime’ for the life of your care plan
Free loan equipment should your purchase ever need sending away for repair
✅ Anti-theft protection
Each care plan includes a SmartTrace Forensic Marking kit that acts as a deterrent for your test equipment and other tools
✅ Instrument cleaning kit
Cleaning kit included with each TM Care & Protect plan
Our hope is that TM Care & Protect will bolster our commitment to support you throughout your journey with us, providing you peace of mind from the hassles of annual servicing, potential tool theft and loss of earnings.
Ensures complete reliability, minimised downtime and peace of mind. TM Care & Protect packages include:
✅ Annual Calibration
No further calibration costs for up to 5 years.
✅ Zero Unplanned Downtime
In case of any unforeseen repairs, we provide FREE loan instruments so you can continue working.
✅ Theft Deterrent Kit
Each care plan includes a SmartTrace forensic marking kit: The UK's most powerful theft deterrent. Use on your test equipment, van and tools.
✅ No Shipping Cost
Includes collection and return deliveries when it's time for calibration.
✅ Instrument Cleaning Kit
Avoid preventable issues by keeping your test equipment clean.
Our hope is that TM Care & Protect will bolster our commitment to support you throughout your journey with us, providing you peace of mind from the hassles of annual servicing, potential tool theft and loss of earnings.
Please see our terms and conditions for full details of TM Care & Protect.
Kit Options
Kit
1 x Martindale HPAT550 PAT Tester
Kit
1 x Martindale HPAT550 PAT Tester
Kit
1 x Martindale HPAT550 PAT Tester
Kit
1 x Martindale HPAT550 PAT Tester
Kit
1 x Martindale HPAT550 PAT Tester
Kit
1 x Martindale HPAT550 PAT Tester
Kit
1 x Martindale HPAT550 PAT Tester