25 A SENTRON MCCB with ETU560 — what the ratings mean for panel fit
The Siemens 3VA2025-7JQ36-0AA0 is a SENTRON-series molded case circuit breaker (MCCB) configured for line protection, carrying a continuous current rating Iu of 25 A that holds flat across the full operating temperature range — no derating from 40 °C through 70 °C. The ETU560 electronic trip unit gives you adjustable overload and short-circuit protection curves, plus a communication function for integration into a monitored distribution system — this is not a thermal-magnetic breaker; it's a programmable protective device that reports status. Three-pole construction, 800 V rated insulation voltage, and an interrupting capacity that starts at 330 kA at 240 V and steps down to 3 kA at 690 V — the SCCR headroom at the lower voltages means this breaker can sit upstream of a high-fault panel without cascading.
Mounting and panel integration
Dimensions are 86 mm deep, 105 mm wide, 181 mm tall — fits standard MCCB mounting patterns in a distribution panel or enclosure. IP40 on the front face protects against tool entry; the rear and sides are open to the enclosure environment, so panel sealing is your call. Optional motor drive available (Product Extension / Optional / Motor Drive: Yes) for remote trip or reset — useful if the breaker is in a locked or hard-to-reach section of the line-up.