Technical Specifications / Parameters Parameter Specification Manufacturer Type Code GSH204 AC 4P Brand / Series ABB System PRO M compact® (GSH201/GSH204 Series) Device Type Residual Current Circuit Breaker (RCCB) / Residual Current Operated Circuit-Breaker without Integral Overcurrent Protection Number of Poles 4-Pole (4P). It protects a three-phase circuit with neutral by monitoring all four conductors. Rated Current (In) This is a variable selection. The base code "GSH204" indicates a 4-pole platform, and the rated current (e.g., 25A, 40A, 63A) must be specified (e.g., GSH204 AC 4P 40A). Rated Residual Operating Current (IΔn) This is a variable selection. Common sensitivities are 30mA, 100mA, 300mA, etc. It must be specified (e.g., GSH204 AC 4P 40A/0.03 for 30mA). Residual Current Type Type AC: Sensitive to sinusoidal alternating residual currents only. Rated Operational Voltage (Ue) 400 V AC (3P+N~) Rated Insulation Voltage (Ui) 500 V AC Tripping Characteristic Instantaneous (typically < 0.1 seconds) for residual currents ≥ IΔn. Short-Circuit Capacity Requires series protection by upstream MCBs (e.g., three SH201 plus one for neutral, or a 4-pole SH204). Its own conditional short-circuit withstand rating is defined by standard (e.g., 4.5kA or 6kA to IEC 61008/9). Mechanical Life ≥ 20,000 operations Test Button Yes. A built-in "T" button to test the mechanical and electrical functionality. Mounting DIN Rail Mounting (35 mm symmetrical rail, EN 60715) Module Width 72 mm (4 modules) Standards Compliance IEC/EN 61008-1, IEC/EN 61009-1 (for construction), CE, CCC, etc. Terminals Cage Clamp Terminal for all poles. Connectable Conductors Rigid/Flexible Copper: Up to 35 mm² (depending on the current rating). Ambient Temperature Range -25°C to +55°C (for calibration)