This residual current circuit breaker detects and interrupts abnormal leakage currents to prevent electrocution and electrical hazards. It ensures protection for personnel and premises by cutting off power when current exceeds 30 mA, particularly in systems with direct or varying DC components. **Technical Specifications:** Rated operational voltage: Works on three-phase AC systems up to 400V. B Type sensitivity makes it suitable for detecting both AC and pulsating DC faults, along with a smooth DC component up to specific frequencies. Nominal conditions: Supports nominal rated current up to 40 amps on all four poles. Designed for installations requiring comprehensive fault coverage in industrial or commercial settings where high-frequency components might exist. Housing & Standards Compliance: Housed in durable molded plastic — capable of being DIN rail-mounted. Tested under IEC/EN standards regulations; compliant with IEC61008-1 for safety parameters. **Important Notes/Limits:** - Limited use for applications exceeding specified frequency range requirements (consult datasheet). - Trip threshold fixed at 30 mA; non-adjustable configuration. - Not intended as an overcurrent protective device — must be combined with breakers covering overload functions. - Sensitivity may vary slightly depending on environmental factors such as extreme temperature exposure during operation.
