The Siemens 3VA2325-5HM32-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 250 A continuous current at up to 70 °C ambient, with a 3-pole configuration and a rated insulation voltage of 800 V. Designed for line protection, it carries a 187 kA breaking capacity at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V. The adjustable thermal-magnetic trip range spans 375 A to 3 000 A (Ir = 250 A full-scale, Ii = 50 A initial).
What the key ratings mean for fit
The 250 A continuous rating holds flat from 40 °C through 70 °C — no derating needed in a warm enclosure, which is rare for a compact MCCB. The 187 kA SCCR at 240 V means it safely interrupts faults up to that level without cascading upstream, critical for high-available-fault-current panels. At 690 V the breaking capacity drops to 7.5 kA, so verify the available fault current if the breaker lands on a 690 V bus. The adjustable trip range (375 A minimum to 3 000 A maximum) lets you set the magnetic pickup to coordinate with downstream devices without swapping the breaker.
Integration and deployment context
Mounts in a standard panel on a DIN rail or direct-screw base. Dimensions are 110 mm deep, 138 mm wide, 248 mm tall — fits a 3-pole MCCB footprint common to SENTRON 3VA2 frames. The 37.5 W maximum power loss at full load should be factored into enclosure thermal calculations. Ground-fault monitoring uses summation current formation on the L-conductor; no undervoltage release or communication function is built in.