Residual current circuit breaker with overcurrent protection 3x1P+N 6kA C 13A/30mA Type A QC/QBB ADZ363D

Multifunctional protection in a compact housing

This residual current circuit breaker with overcurrent protection combines the functions of an RCCB (residual current circuit breaker) and an MCB (miniature circuit breaker) in one device. This solution saves space in the distribution board and provides comprehensive protection for the electrical installation. It protects against the effects of short circuits, overloads and electric shock, which is crucial for both the safety of users and the reliability of the system.

Application and design features

The circuit breaker is designed to protect electrical circuits with a rated voltage of 230V and a rated current of 13A. Characteristic C ensures that the device reacts quickly to overloads, but at the same time tolerates short-term current surges that occur, for example, during the starting of motors. The short-circuit breaking capacity at 6kA guarantees effective disconnection of the circuit in the event of a serious failure. Additionally, the presence of a disconnectable neutral pole (N) simultaneously with the other poles increases the level of safety.

• Versatility: Protection against leakage currents (30mA) and overloads in one device.
• Compact size: Width of 4 modules facilitates mounting even in crowded distribution boards.
• High selectivity: Minimizes the risk of unnecessary circuit tripping.
• Locking: Provides additional safety during maintenance and repairs.
• Wide operating temperature range: From -25°C to 70°C enables use in various environmental conditions.
• Flush mounting: Allows for aesthetic and discreet placement of the circuit breaker.
• Compliance with standards: Meets the requirements of overvoltage category III and pollution degree 2, which guarantees reliable operation in typical installation conditions.

This model is characterized by type A sensitivity, which means that it effectively detects leakage currents that are both sinusoidal and pulsating – typical of modern electronic devices. The rated impulse withstand voltage of 4kV provides resistance to transient overvoltages that can damage sensitive electronic components. The circuit breaker also has protection against unwanted tripping, which increases its reliability and minimizes the risk of false alarms.