Arc-fault detection device with residual current operated circuit-breaker with overcurrent protection, conforms to IEC/EN 62606, reliably detects arc faults, residual current circuit-breaker part is mains voltage-independent, optionally pulse-current sensitive, delayed or non-delayed, red/green contact position indicator, trip indication with LED; guide for secure terminal connection, three-position DIN rail clip – makes removal from an existing busbar system possible, comprehensive range of accessories that can be retrofitted, rated fault currents: 10 mA or 30 mA, rated operational currents of up to 40 A, trip characteristics B,C, rated making and breaking capacity of up to 10 kA, suitable for outdoor use (building and outdoor distribution boards) at temperatures as low as -25 °C