50440 is a closed toroid earth leakage current sensor designed for equipment monitoring and control applications. It features an inner diameter of 120 mm and a rated current of 250 A, making it suitable for detecting earth leakage currents in various electrical systems. The sensor is compatible with Vigilohm Insulation Fault locators and VigiPacT type A residual current protection and monitoring relays, ensuring effective coordination with circuit breakers that switch off within 40 milliseconds. Its specifications include a rated short-time withstand current of 85 kA for 0.5 seconds and a residual short-circuit withstand current of 85 kA for the same duration. The 50440 is versatile for panel or DIN rail mounting and is used primarily for equipment monitoring and safety protection.

Schneider Electric is a global leader in energy management and automation solutions, offering products such as PLCs, circuit breakers, and building management systems. Known for innovation and sustainability, Schneider Electric’s technologies optimise efficiency, safety, and sustainability across industries like energy, manufacturing, and infrastructure.