The Siemens SENTRON 3VA2225-5HN32-0BC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 250 A. With interrupting capacities of 187 kA at 240 V and 121 kA at 415 V, it is sized for high-fault installations such as main switchboards or large distribution panels where selectivity with downstream breakers is required.
The 250 A rating at 40 °C is the baseline; the breaker holds that full current up to 50 °C, then derates linearly to 213 A at 70 °C. The interrupting ratings step down with voltage: 187 kA at 240 V (typical for 208/240 V distribution), 121 kA at 415/440 V, 79 kA at 500 V, and 5.1 kA at 690 V.
Dimensional fit and integration
The breaker measures 105 mm wide, 181 mm high, and 86 mm deep.