What this MCCB carries and where it fits
The Siemens SENTRON 3VA2225-5HN42-0AB0 is a 4-pole molded case circuit breaker (MCCB) rated for 250 A continuous current, sized for line protection in distribution panels and machine supply feeders. Its interrupting capacity hits 187 kA at 240 VAC, 121 kA at 415/440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V — so the same breaker clears faults across a wide voltage range without swapping frames. The thermal curve is published from 40 °C through 70 °C: it holds the full 250 A up to 50 °C, then derates to 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C. That matters when the breaker sits inside a crowded panel or near heat sources — the 40 °C rating is the one to size against unless you know ambient stays below 50 °C. Maximum power loss is 48 W, which feeds into the enclosure thermal budget. Dimensions are 140 mm wide, 181 mm high, 86 mm deep — a standard SENTRON 3VA frame footprint that drops onto DIN rail or mounts via the rear panel studs.
Lifecycle and sourcing posture
The basic switch variant is 3VA2225-5HN42-0AA0; this listing adds two HP auxiliary switches. No undervoltage release, no ground-fault monitoring, no communication module — it is a straight line-protection MCCB with auxiliary signalling.