Siemens 3VA2225-5HL32-0DF0 — 250 A SENTRON MCCB for Line Protection
The Siemens 3VA2225-5HL32-0DF0 is a SENTRON molded case circuit breaker (MCCB) rated for 250 A continuous current at 40 °C, configured as a 3-pole line-protection device with an integrated undervoltage release and a 1 auxiliary switch plus 1 trip alarm switch (HQ design). Its interrupting capacity reaches 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V — figures that define the fault-current headroom available for selective coordination downstream. The breaker carries a trip indicator and an undervoltage release as standard, and is designed without communication function or ground-fault monitoring.
The 250 A rating holds from 40 °C through 50 °C ambient; above that it derates linearly to 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C. Maximum power loss is 50.5 W, a figure to account for in enclosure thermal calculations when the breaker is fully loaded.
Dimensions are 181 mm height, 105 mm width, and 86 mm depth — a standard 3-pole MCCB footprint that fits SENTRON 3VA2 panel cutouts and busbar systems. The 86 mm depth (3.39 in) is the dimension to check against enclosure gland-plate clearance and door-mounted operator mechanisms.