Siemens SENTRON 3VA2225-6HL32-0KH0 — 250 A MCCB, 3-Pole, Line Protection
The Siemens SENTRON 3VA2225-6HL32-0KH0 is a 3-pole molded case circuit breaker (MCCB) rated for 250 A continuous current at 40 °C, designed for line protection in distribution panels and industrial switchgear. Its breaking capacity varies by system voltage: 242 kA at 240 VAC, 187 kA at 415 VAC and 440 VAC, 121 kA at 500 VAC, and 4.5 kA at 690 VAC — the 690 V figure is a steep drop, so verify your fault current at that voltage before specifying. The continuous current rating holds at 250 A from 40 °C through 50 °C ambient, then derates linearly to 213 A at 70 °C. Maximum operating temperature is 70 °C; storage range spans -40 °C to 80 °C. Power loss at full load is 48 W maximum — factor that into enclosure thermal calculations. This variant includes a shunt trip (STL) auxiliary release and comes equipped with 2 auxiliary switches plus 1 trip alarm switch (HQ configuration). A voltage trigger indicator is present; undervoltage release and ground-fault monitoring are not fitted on this order code. No communication function is built in — it is a standalone thermal-magnetic or electronic trip unit (the base switch is 3VA2225-6HL32-0AA0).
Physical Fit and Panel Integration
Dimensions: 181 mm height, 105 mm width, 86 mm depth. The 3-pole frame mounts on a DIN rail or directly to a backplate via the screw terminals. At 105 mm wide, it occupies three standard 35 mm module spaces plus a small margin — confirm clearance against adjacent devices in a crowded enclosure.