Martindale Electric 50V/440V AC Proving Unit

Operating a voltage indicator without first verifying its function is a critical safety risk. The Martindale AC proving unit is an essential tool designed to enable the full and safe checking of voltage indicators, in full compliance with Health and Safety recommendations.

This robust unit provides two crucial test voltages: a low 50V check and a high 440V check, ensuring your voltage detection equipment is functioning accurately across a typical range. It is fully compatible with Martindale's own range of voltage indicators and is also suitable for use with any two-pole voltage tester that features LED or LCD indication.

For enhanced flexibility in workshop or site use, the unit features an input for an external 12V power supply unit (PSU), sold separately. This allows for operation away from a mains power source. Constructed to reliable standards, this proving unit is a fundamental component for any electrician's or engineer's safety protocol, helping to prevent accidents by confirming test equipment is live and working correctly before use.

Key Features:

• Provides essential 50V and 440V test outputs for proving voltage indicators.
• Ensures compliance with health and safety procedures for electrical work.
• Compatible with Martindale voltage indicators and other two-pole testers with LED/LCD displays.
• Can be powered by an optional external 12V DC PSU for portable use.
• Compact and durable design for use in various environments.