Residual current device P 304 4P 63 A 30 mA Type A DX3 series 411761

Safety and Protection of Electrical Installations

The residual current device (RCD) P 304 4P 63A 30mA Type A from the DX³ series is a critical component ensuring safety in every electrical installation. Its purpose is to protect users from electric shock and to safeguard electrical equipment against the effects of short circuits and overloads. Thanks to its design and parameters, this device provides reliable protection in both residential and commercial buildings.

Characteristics and Applications

The P 304 residual current device is a four-pole (4P) unit with a rated current of 63A and a sensitivity of 30mA, meaning it responds to leakage currents as low as 30 milliamperes—quickly enough to prevent hazardous situations. The Type A classification indicates its ability to detect both alternating and pulsating DC leakage currents, significantly expanding the scope of protection. Mounted on a DIN rail, it occupies 4 modules in width.

This RCD model performs exceptionally well in circuits with higher power demands, such as those supplying heating devices, pumps, or motors. It ensures effective protection against the consequences of short circuits and overloads while minimizing the risk of electric shock. Additionally, the presence of a test button allows for regular verification of its functionality.

Construction and Product Features

The P 304 DX³ RCD stands out for its robust construction and high manufacturing quality. The IP20-rated enclosure protects internal components against direct contact and ingress of solid objects larger than 12mm. The rated insulation voltage (Ui) is 500V, and the short-circuit withstand capacity (Icw) reaches up to 10kA—ensuring reliable operation even under demanding environmental conditions. The option to install additional accessories enables customization to meet specific installation requirements.

• Wide operating temperature range: from -25°C to +60°C allows use in diverse environmental conditions.
• Lockout mechanism: Provides additional safety by preventing accidental re-energizing after tripping.
• Conductor cross-sections: Accepts single-core cables from 0.75 mm² to 50 mm² and multi-core cables from 0.75 mm² to 35 mm².
• Compliance with standards: Meets requirements of IEC/EN 61008-1, confirming its safety and reliability.
• Compatibility with HX³ system: Enables wireless integration with the HX³ Optimal Energy Distribution System up to 125A, simplifying connection to modern electrical installations.