The Siemens 3VA2025-6HN36-0AA0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for a continuous current Iu of 25 A across the full ambient temperature range from 40 °C to 70 °C — no derating curve to chase, which simplifies panel schedules in warm enclosures.
Breaking capacity across voltage classes
The interrupting rating drops predictably as voltage rises: 242 kA at 240 V, 187 kA at both 415 V and 440 V, 121 kA at 500 V, and 3 kA at 690 V. For a 480 V distribution panel, the 187 kA figure at 440 V is the applicable benchmark — well above typical available fault currents in most industrial switchboards, provided the upstream transformer impedance is within normal ranges.
The 3VA2025-6HN36-0AA0 measures 105 mm wide, 181 mm high, and 86 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without gland-plate surprises. Power loss is 0.84 W maximum — negligible for thermal budgeting inside a crowded panel.