The Siemens SENTRON 3VA2025-7HL32-0AG0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 25 A across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Interrupting capacity hits 330 kA at 240 V, 242 kA at 415 V and 440 V, and 187 kA at 500 V; at 690 V it still clears 3 kA. The insulation voltage is rated 800 V.
What the ratings mean for fit
The 25 A continuous rating is flat from 40 °C to 70 °C — that means no thermal derating curve to chase in a warm enclosure. The interrupting ratings tell you where this breaker can sit in a distribution panel: 330 kA at 240 V is high enough for most service-entrance or large-feeder applications, but at 690 V the 3 kA limit means it's only suitable for low-fault locations on that voltage class. The 1.5 A minimum trip threshold (adjustable via the thermal-magnetic element) lets it protect smaller branch circuits without nuisance tripping on inrush.
Panel integration
The breaker measures 105 mm wide by 181 mm high by 86 mm deep — fits a standard 3-pole MCCB footprint. It carries one auxiliary switch and one trip alarm switch (HP type) for remote status indication. The trip indicator is built in. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C. Power loss at rated current is 0.5 W — negligible for thermal budgeting inside a sealed enclosure.