What this MCCB does on the line
The Siemens SENTRON 3VA2225-5HL42-0AB0 is a 4-pole molded case circuit breaker rated for 250 A continuous current at 40 °C, with a maximum interrupting capacity of 187 kA at 240 V. It's designed for line protection — meaning it sits at the main feeder or a large branch, not on a motor or a control transformer. The 250 A frame holds solid up to 70 °C ambient (derated to 213 A at that temp), so it handles a warm panel without tripping early. That 187 kA at 240 V tells you this breaker can clear a massive fault without welding its contacts shut — important when the transformer feeding the panel can dump that kind of energy.
Panel fit and footprint
The breaker measures 140 mm wide by 181 mm tall by 86 mm deep — a standard SENTRON 3VA frame size. That 86 mm depth means it clears most shallow enclosures without bumping the gland plate. Four-pole construction takes up the full width; if you're swapping from a three-pole unit, plan for an extra 35 mm or so of DIN rail space. It ships with two auxiliary switches (HP type) built in, so you don't need to add a separate side-mount for status feedback to the PLC.