SENTRON 3VA2125-5KP36-0AA0 — 25 A MCCB with ETU850 Trip Unit
The breaking capacity reaches 187 kA at 240 V AC, dropping to 121 kA at 415/440 V, and 75.6 kA at 500 V; at 690 V it's still rated at 3.7 kA.
The 25 A continuous rating is the breaker's nominal current — it's the load it carries without tripping under normal conditions. The ETU850 trip unit lets you set the overload pickup and short-time delay, so you can achieve selectivity with downstream breakers. The IP40 front protection means the breaker face is dust-protected but not sealed against water; it's fine for indoor panel mounting.
Integration Notes
Dimensions are 105 mm wide, 181 mm high, and 86 mm deep — standard for a 3-pole SENTRON 3VA2 frame. The ETU850 supports communication, so you can integrate it into a monitoring system via the breaker's communication module slot.