The Doepke DFS4 040-4/0.03-HPFI-Schutzschalter is a robust 4-pole residual-current circuit breaker designed for 400 V electrical installations. Ideal for industrial panels and commercial setups, it combines reliable overcurrent protection with precise residual-current detection to safeguard people and equipment.

Key Features & Design

• Polzahl: 4-pole configuration for full three-phase protection and neutral integrity
• Rated voltage: 400 V AC
• Rated current: 40 A
• Residual current sensitivity: 0.03 A (30 mA) for fast fault detection

Performance / Benefits

With 30 mA sensitivity, this HPFI-Schutzschalter provides reliable protection against earth-fault currents, reducing the risk of electric shock and protecting connected equipment. The four-pole design ensures complete disconnection in fault conditions, supporting safer operation of three-phase systems and multi-wire installations. A solid choice for distribution boards and control panels that demand dependable residual-current protection.