The Siemens 3VA2225-6JQ32-0CH0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 250 A at 40 °C and an insulation voltage of 800 V. That 250 A figure holds flat through 50 °C — only at 55 °C does it start to taper (238 A), dropping to 200 A at 70 °C. For a panel that runs warm, the full rating is available up to 50 °C ambient without derating. Breaking capacity is the standout: 242 kA at 240 V, 187 kA at 415 V, 121 kA at 500 V, and still 6 kA at 690 V.
Trip unit, auxiliaries, and communication
The overcurrent release is an ETU560 electronic trip unit — adjustable long-time, short-time, instantaneous, and ground-fault protection. Ground-fault monitoring uses summation current formation on the L-conductor. Communication function is built in — this variant is ready for integration into a higher-level monitoring system without an external comm module. The depth is 86 mm, which fits most standard distribution boards. Mechanical endurance is rated at 20,000 operations.