SENTRON 3VA2025-5KQ46-0AA0 — 25 A MCCB with 187 kA Interrupting Capacity
The Siemens SENTRON 3VA2025-5KQ46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 25 A continuous current, designed for line protection in distribution panels and industrial switchgear. Its interrupting capacity reaches 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V — covering fault levels from low-voltage mains down to motor-control centers. The 25 A rating holds across the full operating temperature range from -25 °C to 70 °C with no derating needed — each ambient point from 40 °C through 70 °C lists 25 A. That simplifies panel design: no temperature-correction factor to apply for this frame size. Mounts on a standard DIN rail or panel-mount footprint. Dimensions are 181 mm high, 140 mm wide, 86 mm deep — fits a 4-pole MCCB slot in a SENTRON distribution board or a third-party enclosure with matching cutout.
Key Functional Features
Built-in communication function allows integration into energy management or monitoring systems — the 3VA platform supports optional communication modules for remote trip indication and load data. Ground-fault monitoring uses summation current formation on L + N conductors, covering both phase-to-ground and neutral-to-ground faults. Rated insulation voltage is 800 V, and maximum power loss is 0.84 W — low thermal dissipation for a 25 A MCCB, which keeps enclosure internal temperature rise manageable. Storage range spans -40 °C to 80 °C.