Residual current circuit breaker with overcurrent protection 1P+N 6kA C 20A/30mA Type AC ADC970D

Comprehensive protection for electrical installations.

The Hager ADC970D residual current circuit breaker with overcurrent protection is a reliable solution for ensuring safety in electrical installations. The device combines the functions of an overcurrent circuit breaker (MCB) and a residual current device (RCD), offering comprehensive protection against overloads, short circuits and electric shock. It is an ideal choice for both professionals and end users looking for an effective and compact solution.

Functionality and application

The circuit breaker is designed for use in single-phase 1P+N circuits with a rated voltage of 240V and a frequency of 50Hz. It is characterized by a rated current of 20A and a residual current sensitivity of 30mA (0.03A) of type AC, which provides effective protection against dangerous leakage currents. The C tripping characteristic means that the device copes well with impulse loads, such as starting motors or devices powered by transformers. The rated short-circuit breaking capacity at 6kA guarantees quick and safe disconnection of the circuit in the event of a short circuit.

Construction and mounting

The Hager ADC970D circuit breaker is only 2 modules wide, which saves space in the distribution board. It has a protection degree of IP20, which protects against accidental contact. Mounting is done on a TH35 rail, and the connection of wires is done using screw terminals – both solid (1-25mm²) and stranded (1-16mm²). Simultaneous disconnection of the N pole increases safety. The device operates in a temperature range from -25°C to 40°C.

Safety and compliance with standards

The circuit breaker meets the requirements of IEC 60898-1 and IEC 60947-2 standards, which confirms its high quality and reliability. Energy limitation class 3 ensures effective limitation of short-circuit energy, minimizing the risk of damage to the installation. The rated impulse withstand voltage Uimp is 4kV, which guarantees resistance to overvoltages. The device has overvoltage category III and pollution degree 2.