MCCB for 250 A Line Protection
The Siemens SENTRON 3VA2225-6JP32-0AG0 is a 3-pole molded case circuit breaker rated for 250 A continuous current at 40 °C, designed for line protection in distribution panels. Its interrupting capacity hits 242 kA at 240 V and 187 kA at 415 V, so it handles high-fault scenarios without cascading upstream. The 250 A rating holds flat through 50 °C, then derates to 238 A at 55 °C and 200 A at 70 °C — useful when the breaker sits near other heat sources in a crowded enclosure.
Interrupting Performance and Panel Fit
Fault current capability drops with voltage: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 4.5 kA at 690 V. The 86 mm depth, 105 mm width, and 181 mm height (3.39 x 4.13 x 7.13 in) mean it fits standard MCCB panel cutouts. A built-in trip indicator speeds fault diagnosis on the line. Communication function is present, enabling integration with monitoring systems.
Environmental and Power Loss
Operates from -25 °C to 70 °C ambient; storage range -40 °C to 80 °C. Maximum power loss is 48 W at full load — factor that into enclosure thermal calculations if the panel is sealed or high-density.