What this MCCB delivers for line protection
The Siemens SENTRON 3VA2325-6HL32-0KC0 is a 3-pole molded case circuit breaker (MCCB) rated for 250 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. That flat thermal curve simplifies panel design when the breaker sits near other heat sources. Breaking capacity runs 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 7.5 kA at 690 V. For a 250 A frame, those numbers give generous SCCR headroom in most low-voltage distribution panels — the 242 kA at 240 V covers high-fault utility feeds without cascading upstream. Designed for line protection, this variant ships with a shunt trip (STL) auxiliary release and two HQ auxiliary switches. The shunt trip lets a remote signal — from a safety relay, PLC, or emergency-stop circuit — open the breaker independently of the overcurrent mechanism.
Panel fit and mounting
Dimensions are 248 mm high, 138 mm wide, 110 mm deep. The 138 mm width for a 3-pole 250 A frame is standard for SENTRON 3VA2 breakers — it drops into the same mounting footprint as other 3VA2 three-pole units, so a panel laid out for a 3VA2116-5HL32-0AK0 accepts this breaker without re-drilling the gland plate or reworking the bus bars. Maximum power loss is 37.5 W at rated load. That's moderate for a 250 A frame; factor it into enclosure ventilation if the panel is sealed or densely packed.
What the ratings mean for your panel
The 250 A continuous rating holds at every 5 °C step from 40 °C to 70 °C — no thermal derating curve to calculate. That is unusual for a compact MCCB and simplifies coordination studies in warm enclosures. Storage temperature range is -40 °C to 80 °C; operating range is -25 °C to 70 °C. The storage floor matters for unheated warehouses in cold climates — the breaker can sit at -40 °C without damage, as long as it's not energized until it warms to within the operating band.