Technical Specifications / Parameters Parameter Specification Manufacturer Type Code GSH204 AC-D40/0.03 Brand / Series ABB System PRO M compact® (GSH200 Series - RCBO) Device Type D-Curve Residual Current Circuit Breaker with Overcurrent Protection (RCBO) Number of Poles 4-Pole (4P) (Protects phases L1, L2, L3, and Neutral) Rated Current (In) 40 A (Continuous current carrying and overcurrent protection rating) Tripping Characteristic (Overcurrent) D Curve (Very high inrush tolerance). • Instantaneous Magnetic Trip Range: 10In to 20In (i.e., 400A to 800A). Rated Residual Operating Current (IΔn) 30 mA (0.03A) (High sensitivity for personal protection against direct and indirect contact). Residual Current Type Type AC: Detects sinusoidal alternating residual currents only. Rated Operational Voltage (Ue) 400 V AC (3P+N~) Rated Breaking Capacity (Icn) 6 kA (According to IEC/EN 61009-1) Mechanical Life ≥ 20,000 operations Test Button Yes (Built-in "T" button for functional testing). Mounting DIN Rail Mounting (35 mm symmetrical top-hat rail, EN 60715) Module Width 72 mm (4 modules) Standards Compliance IEC/EN 61009-1 (RCBOs), IEC/EN 61008-1 (General requirements for RCCBs), CE, CCC, and other regional approvals. Terminals Cage Clamp Terminal (screwless clamp technology) for easy and secure wiring. Connectable Conductors Rigid and Flexible Copper: 10 - 35 mm² (typical range for 40A rating). Ambient Temperature Range -25°C to +55°C (for calibration; derating may apply at higher temperatures).