Residual current device P 302 2P 63 A 100 mA type AC, DX3 series 411516

Safety and Protection of Electrical Installations

The residual current device (RCD) P 302 2P 63A 100mA AC from the DX3 series is a critical component of every modern electrical installation, providing protection against electric shock and preventing fires caused by short circuits. The device effectively detects leakage currents to earth and immediately disconnects the circuit, minimizing the risk of hazardous situations.

Functionality and Applications

Designed for operation in networks with a voltage of 230V and frequency of 50Hz, this RCD is suitable for protecting electrical circuits in residential, commercial, and industrial buildings. Its two-pole (2P) construction enables protection of both live conductors. The rated current of 63A makes it appropriate for circuits with medium power demand. A sensitivity of 100mA ensures effective protection against electric shock. The AC type designation indicates that the device responds to sinusoidal alternating currents—ideal for protecting most household and industrial appliances.

Installation and Design Features

Installation is performed on a DIN rail, facilitating seamless integration with existing distribution equipment. Compact dimensions (2 module width, 44mm mounting depth) allow efficient use of space within the distribution board. With a short-circuit withstand rating of 10kA, the device ensures reliable operation even under severe overvoltage conditions. Additionally, a lockout mechanism prevents accidental re-energizing after tripping, enhancing operational safety. The enclosure is rated IP20, protecting against contact with live parts and ingress of solid objects larger than 12.5 mm. The rated impulse voltage withstand of 4kV ensures resistance to sudden voltage spikes. Conductors can be connected using single-core cables with cross-sections from 0.75 to 50 mm² or multi-core cables from 0.75 to 35 mm². The device is constructed from materials resistant to ambient temperatures ranging from -25°C to +60°C. The housing color, close to RAL 7035, provides an aesthetic appearance and easy identification within the distribution board.