Residual current device PR 304 4P 63 A 300 mA type AC, DX3 series 410512

Residual Current Device – Protection and Installation Safety

The residual current device PR 304 is a reliable unit providing effective protection for people and electrical installations against electric shock and damage caused by short circuits and overloads. Designed for use in circuits with voltage ratings of 250–440 V, it performs excellently in both residential and industrial installations. Its DX³ technology-based construction ensures high quality and durability.

Functionality and Applications

This device is a four-pole (4P) residual current circuit breaker with a rated current of 63 A and a sensitivity of 300 mA, type AC. This means it responds to alternating residual currents, which is particularly critical for protection against hazards arising from insulation faults or direct contact with live conductors. The PR 304 is suitable for protecting lighting, socket, and electrical equipment circuits. Thanks to its mechanical lock, accidental tripping is prevented, enhancing operational safety.

Key Features and Benefits

• High Selectivity: AC sensitivity ensures effective protection against alternating residual currents, minimizing false tripping.
• Wide Application Range: Operates reliably in temperatures ranging from -25°C to 70°C, enabling use in diverse environmental conditions.
• Easy Installation: DIN rail mounting simplifies and accelerates installation.
• Enhanced Safety: Mechanical lock prevents accidental disconnection of the device.
• Versatility: Supports connection of single-core cables with cross-sections of 1.5–35 mm² and multi-core cables of 1.5–25 mm².
• Durability: Constructed from high-quality materials, resistant to mechanical damage (IK02) and environmental factors (IP20).
• Standards Compliance: Meets requirements of standard NF EN 61009-1, guaranteeing safety and reliable operation.

The rated current is 63 A, with a rated voltage range of 250–440 V. The device features four poles, AC sensitivity, and a residual current rating of 300 mA. Protection rating is IP20, and operating temperature ranges from -25°C to 70°C. Single-core cables from 1.5 to 35 mm² and multi-core cables from 1.5 to 25 mm² can be connected.

The residual current device PR 304 is an investment in the safety of your electrical installation and its users. Its reliability and functionality make it an ideal choice for professional installers and conscientious end-users.