The Siemens 3VA2225-7KP32-0KL0 is a SENTRON molded case circuit breaker (MCCB) rated for 250 A continuous current at 40 °C, with a 3-pole configuration and a maximum breaking capacity of 330 kA at 240 V AC — that SCCR covers most industrial service-entrance and distribution applications where fault currents are high but secondary-side coordination is manageable.
Breaking capacity and thermal derating
Breaking capacity drops from 330 kA at 240 V to 242 kA at 415/440 V, then to 187 kA at 500 V, and falls sharply to 4.5 kA at 690 V — so at higher line voltages this breaker is best applied where the available fault current is known to be modest, not at the full 690 V rating. Thermal continuous current holds at 250 A from 40 °C through 50 °C, then derates to 238 A at 55 °C, 225 A at 60 °C, 213 A at 65 °C, and 200 A at 70 °C — useful for panels near ovens, foundries, or outdoor enclosures in hot climates where the ambient exceeds 50 °C.
Auxiliaries and releases
This variant ships with a shunt trip release (STL) for remote tripping, plus two auxiliary switches, one trip alarm switch, and one electrical alarm switch — enough status feedback for a PLC-based distribution monitoring system without adding external interface relays. The breaker includes a voltage trigger and a trip indicator, but no undervoltage release and no ground-fault monitoring module — if you need UVR or GF protection, that has to come from an external relay or a different 3VA variant.
Communication and integration
A communication function is built in (the -0KL0 suffix signals this), so the breaker can report status and accept remote commands over the SENTRON bus system — no separate communication module needed for basic integration into a power-monitoring network. Physical dimensions are 181 mm height, 105 mm width, 86 mm depth — the 105 mm width is standard for 3-pole SENTRON 3VA frames up to 250 A, so it drops into existing panel cutouts and busbar arrangements designed for that footprint without re-drilling or re-bussing.