Residual current device P304 4P 63A 30mA type F (HPI) DX3 series 411696

Safety and Protection in Your Electrical Installation

This four-pole residual current device (RCD) from Legrand’s DX3 series is a critical component ensuring the safety of people and property in every electrical circuit. Marked with the code 411696, it protects against electric shock and prevents fires caused by earth faults. Its primary function is to rapidly disconnect the power supply upon detecting current leakage, making it indispensable in any modern building.

Functionality and Application

The P304 circuit breaker, rated at 63A and with a sensitivity of 30mA (Type F/Hpi), is designed to protect circuits operating at 400V. The Hpi type provides high immunity to disturbances, which is especially important in installations exposed to pulsating currents—such as those powering electronic devices or control systems. Installation is performed on a standard DIN rail, simplifying integration into existing electrical infrastructure. The device’s width of 4 modules enables efficient use of space in the distribution board.

Design and Key Features

The circuit breaker has been engineered for durability and reliability. With a short-circuit withstand rating of 10kA, it ensures resilience against overloads, while its mechanical lock prevents accidental re-energization after tripping due to current leakage. The enclosure has an IP20 protection rating, protecting against accidental contact and providing basic protection against solid objects. The device can be expanded with additional accessories (auxiliary contacts, trip units), enhancing its functionality and allowing customization to meet specific installation requirements. The conductor cross-section range for connections is 0.75 mm² to 50 mm² for single-core cables and up to 35 mm² for multi-core cables, offering great flexibility in selecting supply conductors. Additionally, the circuit breaker features a gray operating handle for easy identification of its status.