SENTRON 3VA2125-7MQ36-0AA0 — motor protection MCCB with ETU860M release
The Siemens 3VA2125-7MQ36-0AA0 is a 3-pole SENTRON molded case circuit breaker (MCCB) configured for motor protection, carrying a rated continuous current (Iu) of 25 A that holds flat from 40 °C through 70 °C ambient — no derating needed across that band. Interrupting capacity reaches 330 kA at 240 V AC, 242 kA at 415 V and 440 V, and 187 kA at 500 V, dropping to 3.8 kA at 690 V. This is the motor-protection variant, so the trip curve and release logic are tuned for motor-start inrush rather than general distribution loads.
Communication function is onboard, so it can integrate with higher-level monitoring systems for status and trip data. Maximum power loss is 10 W, manageable in a ventilated enclosure.
Operating power and endurance
Rated operating power in AC-3 duty (motor switching) is 5.5 kW at 230 V and 11 kW at 400 V.