The Siemens SENTRON 3VA2225-7HM32-0HL0 is a 3-pole molded case circuit breaker (MCCB) rated at 250 A continuous, designed for line protection in distribution panels. Its interrupting capacity reaches 330 kA at 240 V and 242 kA at 415 V and 440 V, dropping to 4.5 kA at 690 V — so the fault-current rating you need to match is the one at your system voltage, not the headline number. The breaker includes a shunt trip (STL) release and a full auxiliary switch set: 2 auxiliary switches plus 1 trip alarm and 1 electrical alarm switch (HQ designation). No undervoltage release is fitted, and there is no communication module onboard.
Thermal derating and trip settings
The 250 A rating holds flat from 40 °C through 50 °C ambient. Above that it derates: 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C. If your panel ambient runs above 50 °C, the breaker still carries the load but at a lower continuous current — size the upstream conductor accordingly. The adjustable thermal-magnetic trip has a full-scale value of 250 A and an initial value of 50 A, giving a 5:1 adjustment range for coordinating with downstream feeders. A trip indicator is present for quick fault identification during troubleshooting.
Physical fit and panel integration
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep. The 105 mm width is a standard 4-module footprint on DIN-rail or direct-mount panels — confirm the backplate cutout matches before wiring. Maximum power loss is 48 W, so ventilation around the breaker in a sealed enclosure should be checked. Storage range spans -40 °C to 80 °C; operating range is -25 °C to 70 °C.