Residual current device RH99P7 48VAC 0.03-30A 56505

Differential relay RH99P7 is a reliable device used to protect electrical circuits from the effects of leakage and short-circuit currents to ground. It is a key element ensuring the safety of people and installations, especially in industrial and commercial environments. This relay, manufactured by Schneider Electric, is characterized by its versatility – it works perfectly in mixed circuits.

Functionality and application

The device is designed to monitor differential currents in the range of 0.03 to 30A, allowing for precise detection of even small leakage currents. This ensures effective protection against electric shock and minimizes the risk of equipment damage. It finds application in electrical installations of residential, commercial and industrial buildings, where high reliability and safety are required. The ability to work with both AC and DC voltage increases its flexibility and range of applications.

Technical characteristics and construction

The RH99P7 relay has compact dimensions (72 x 72 x 92 mm) which makes installation easier even in tight spaces. It is equipped with clamp terminals, which provide quick and secure connection of wires. The device requires an external power source with a voltage of 24-130V DC or 48V AC (50/60Hz). It has one normally open and one normally closed contact, allowing integration with various control and signaling systems. It is worth noting the wide operating frequency range – from 50 to 400 Hz – which makes it suitable for different types of installations. The maximum permissible delay time when power is applied is 4.82 seconds, and the differential current adjustment range is 0.03-30mA and 0.015-60mA, allowing you to adjust the device's sensitivity to specific application needs. The lack of error memory function means that after removing the cause of the trip, the relay automatically returns to the ready-to-work state.