Residual current device P 304 4P 25 A 100 mA type AC, DX3 series 411712

Protection and Safety in Your Electrical Installation

This four-pole residual current device (RCD) from the DX3 series, rated at 25A and with a sensitivity of 100mA, type AC, is a critical component ensuring the safety of personnel and equipment in electrical installations. Its use minimizes the risk of electric shock and prevents fires caused by insulation damage or short circuits. It provides reliable protection for both installers and end users.

Functionality and Installation

The device is designed for DIN rail mounting, and its 4-module width allows efficient use of space in the distribution board. The permissible conductor cross-sections range from 0.75 mm² to 50 mm² for single-core cables and from 0.75 mm² to 35 mm² for multi-core cables, offering great flexibility during installation. Equipped with a lockout mechanism, it prevents accidental re-energizing after tripping due to fault activation. The enclosure has an IP20 protection rating and provides protection against direct contact and limited protection against solid objects.

Characteristics and Operating Parameters

The device operates at a rated voltage of 400V and frequency of 50Hz, with a short-circuit withstand capacity (Icw) of up to 10 kA. The rated impulse withstand voltage (Uimp) is 4 kV, ensuring resilience against voltage surges. The device features a test button for regular verification of its functionality—a simple procedure to confirm the proper operation of the protection system. The operating ambient temperature range is from -25°C to 60°C, enabling use in diverse environmental conditions. Additionally, the device is compatible with the HX³ Optimal Power Distribution System up to 125A and supports integration with various auxiliary devices (auxiliary contacts, signaling devices, etc.).