Line protection MCCB with ETU350 — 160 A, 242 kA SCCR
The Siemens 3VA2116-6HN32-0AC0 is a 3-pole SENTRON molded case circuit breaker rated for line protection, carrying a continuous current Iu of 160 A and an interrupting capacity of 242 kA at 240 V, 187 kA at 415 V, and 121 kA at 500 V.
At 55 °C it drops to 154 A, at 60 °C to 148 A, at 65 °C to 142 A, and at 70 °C to 136 A. For a panel that runs warm — say a packed enclosure with drives — the 55 °C derate is the one to budget against. The auxiliary contact version fitted is 2 auxiliary switches HQ, and the breaker includes a latching endurance of 20 000 cycles.