TECHNICAL SPECIFICATIONS – 4-pole RCCB, rated current 40A, residual current 30mA, Type A protection, operating voltage up to 480Y/277V AC, DIN rail mounting, screw terminals, electrical endurance 10,000 cycles, mechanical endurance 20,000 cycles. TYPE A RESIDUAL CURRENT PROTECTION – Type A RCCB detects alternating and pulsating DC residual currents, helping protect circuits and connected equipment from earth leakage faults in power distribution boards and electrical panels. DIN RAIL INSTALLATION DESIGN – Compact 4-pole RCCB mounts on standard DIN rails in distribution boards and switchboards. Screw terminals with failsafe bi-directional cylinder-lift design allow secure wiring and reliable long-term performance. 30MA SENSITIVITY SAFETY – Rated 30mA residual current sensitivity with instantaneous operation for dependable fault detection. Helps improve protection of installations against leakage current to earth and supports safer system operation. ABB PROTECTA PLUS SYSTEM – Part of the ABB Protecta Plus modular distribution system for indoor installations, offering high internal accessibility, removable internal modules for simplified wiring, insulated neutral and earth bars, and an expandable cabinet concept for flexible electrical distribution solutions.