Martindale PD440S 440V Proving Unit

The Martindale PD440S Proving Unit is an alternative to Martindale’s industry-standard PD440 Proving Unit. It is a small, lightweight tester housed in a tough, low-profile, over-moulded case with an MG3 high-strength magnetic hanger. The Martindale PD440S Proving Unit is suitable for testing voltage indicators, two-pole testers, and test lamps.

The Martindale PD440S Proving Unit is optimised for simplicity of use and to this end has a single voltage output of 440V AC. The full voltage is supplied upon contact with the instrument under test. The Martindale PD440S Proving Unit is part of a series of Martindale PDS and PDSX Proving Units (including 690V models) and is colour coded to indicate that it has a voltage output of 440V AC.

The Martindale PD440S Proving Unit is ideal for ensuring compliance with Electricity at Work Regulations, as it can be used to prove low- and high-impedance voltage indicators, multimeters, Drummond test lamps, and two-pole voltage testers both before and after use, thereby ensuring that they are functioning correctly.

Finally, the Martindale PD440S Proving Unit has a long battery life and an Auto Power Off function. The low battery indicator alerts the user when the batteries require attention.

The Martindale PD440S Proving Unit is a safe, small, simple-to-use proving unit for quickly checking voltage indicators, test lamps, and two-pole testers. It is ideal for contractors and maintenance teams.

Martindale PD440S 440V Proving Unit Key Features

• An alternative to the industry-standard Martindale PD440 Proving Unit
• Small, lightweight tester
• Tough, low-profile over-moulded case
• MG3 high-strength magnetic hanger
• Prove low- and high-impedance voltage indicators, two-pole testers, and test lamps
• Optimised for simplicity of use
• Single voltage output: 440V AC
• Full voltage is supplied upon contact with the instrument-under-test
• Colour coded to indicate a voltage output of 440V AC
• Part of Martindale’s series of PDS and PDSX Proving Units
• Ensure compliance with Electricity at Work Regulations
• Long battery life
• Auto Power Off function
• Low battery indicator
• A safe, small, simple-to-use proving unit
• Quickly prove voltage indicators, test lamps, and two-pole testers
• Ideal for contractors and maintenance teams

What’s Included?

• Martindale PD440S 440V Proving Unit
• Martindale MG3 Magnetic Hanger
• 6x 1.5V AA Alkaline Batteries
• Instruction Manual 

Martindale PDS and PDSX Proving Units Comparison Chart