Line protection MCCB with shunt trip and auxiliary switches
The Siemens SENTRON 3VA2225-5HN42-0HL0 is a 4-pole molded case circuit breaker rated for 250 A continuous current, designed for line protection in distribution panels. Its breaking capacity reaches 187 kA at 240 V and 121 kA at 415 V, with a derated 4.5 kA at 690 V. The 250 A rating holds at ambient temperatures up to 50 °C; above that, it linearly derates to 213 A at 70 °C. Maximum power loss is 48 W. This variant includes a shunt trip (STL) release and a complement of two auxiliary switches, one trip alarm switch, and one electrical alarm switch (HQ configuration). No undervoltage release or ground-fault monitoring is fitted. Mounting dimensions are 86 mm deep, 140 mm wide, and 181 mm high — fits standard panel cutouts for 4-pole MCCBs in this class. The trip indicator and voltage trigger are present.
Breaking capacity and selectivity planning
The 187 kA at 240 V and 121 kA at 415 V give this breaker substantial fault-current headroom for most low-voltage distribution systems. At 500 V the rating drops to 75.6 kA, and at 690 V to 4.5 kA — the latter limits its use on 690 V networks to locations with low available fault current. Compared to a smaller-frame sibling like the 3VA2116-5HL32-0AK0, the 3VA2225-5HN42-0HL0 carries a higher continuous rating and a different auxiliary switch complement. Panel cutouts and mounting pattern differ; verify footprint before assuming drop-in replacement. The base switch is 3VA2225-5HN42-0AA0; the -0HL0 suffix adds the shunt trip and auxiliary switch package. If your BOM specifies the -0AA0, this variant provides additional control wiring that must be accounted for.
Environmental and compliance range
Operating temperature range is -25 °C to +70 °C; storage range extends from -40 °C to +80 °C. The thermal derating curve above 50 °C must be applied for continuous load calculations.