The Siemens SENTRON 3VA2216-7HM32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 160 A across the full ambient range from 40 °C to 70 °C with no derating — that means the 160 A rating holds even in a hot panel or next to other heat sources, so you don't lose headroom when the enclosure runs warm. Interrupting capacity hits 330 kA at 240 VAC and 242 kA at 415 VAC, which is high enough for most transformer-fed or generator-backed fault scenarios without cascading upstream breakers.
Panel fit and footprint
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — a standard 3-pole MCCB footprint for a 160 A frame. The depth means it clears a 100 mm deep enclosure backplate with room for wiring gutters; the 105 mm width matches typical SENTRON 3VA2 busbar spacing, so it drops into an existing panel without re-drilling the mounting plate.
Ground-fault and monitoring capability
This breaker includes a ground-fault monitoring version configured for summation current formation on the L-conductor — it senses residual current by summing the phase conductors through an external core-balance transformer, not through an internal electronic trip unit. That means it pairs with a separate ground-fault relay module; the breaker itself does not trip on ground fault unless the relay signals the undervoltage or shunt release. No communication function or voltage-trigger release is built in, so it's a straightforward thermal-magnetic or electronic line-protection device without auxiliary monitoring stack.