Residual current circuit breaker P 312 2P C 25 A 30 mA Type A, DX3 series 411063

Residual Current Circuit Breaker – Safety and Installation Protection

This two-pole residual current circuit breaker from Legrand’s DX³ series combines protective functions against electric shock and overcurrent. It provides comprehensive protection for electrical circuits, safeguarding both people and equipment. This is a critical component of every modern electrical installation, ensuring safe operation.

Construction and Application

The P 312 C 25A/30mA type A breaker is designed to protect circuits with a rated voltage of 230V and a rated current of 25A. The C characteristic indicates delayed response to short-term current surges, which is especially important when connecting devices with electric motors or other components generating high inrush currents. Type A ensures protection against both alternating and pulsating direct residual currents, enhancing safety in case of insulation failure. Installation is performed on a TH35 rail, and its compact dimensions (2 module width) allow efficient use of space in the distribution board.

Key Features and Benefits

• Combined Functions: A single device serves as both a residual current and overcurrent breaker, simplifying installation and saving space in the distribution panel.
• Shock Protection: Rated residual current of 30mA ensures rapid response upon detection of earth leakage, minimizing the risk of electric shock.
• Overload and Short-Circuit Protection: C characteristic and 6kA breaking capacity guarantee effective protection against the consequences of overloads and short circuits in the installation.
• Versatility: Compatibility with the HX³ Optimal Energy Distribution System and support for additional modules (auxiliary contacts, trip units) enhances device functionality.
• Safe Operation: Lockout mechanism prevents accidental re-energizing after tripping due to a fault.
• Easy Testing: Test button enables regular verification of the residual current device’s proper operation.
• Robust Construction: Manufactured from high-quality materials to ensure durability and reliability even under demanding operating conditions (IP20 protection rating).
• Compatible with Various Conductors: Supports connection of single-core cables with cross-sections of 0.75–16 mm² and multi-core cables with cross-sections of 0.75–10 mm², ensuring compatibility with diverse installation types.