Siemens SENTRON 3VA2025-7HL36-0AA0 — 25 A MCCB with ETU320 release
The Siemens SENTRON 3VA2025-7HL36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 25 A across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Its ETU320 electronic overcurrent release gives you adjustable thermal-magnetic characteristics for coordination studies, not just a fixed bimetal curve. Breaking capacity hits 330 kA at 240 V, dropping to 242 kA at 415/440 V and 187 kA at 500 V — still well above typical 25 A feeder fault levels, so you get selectivity headroom without oversizing the frame.
Power loss is a modest 0.5 W max, so thermal rise in a sealed panel is negligible.