The Siemens SENTRON 3VA2116-6HN36-0AA0 is a 3-pole molded case circuit breaker rated for 160 A continuous current, with an ETU350 electronic trip unit designed for line protection. It delivers a 242 kA interrupting capacity at 240 V AC and 187 kA at 415 V AC, meaning it can safely clear a fault up to that level without upstream cascading — critical for high-fault panels downstream of a large transformer. The breaker carries an 800 V rated insulation voltage and operates from -25 °C to 70 °C ambient, with storage from -40 °C to 80 °C. The IP40 front protection keeps the face sealed against small solid objects in a panel environment.
Interrupting ratings and selectivity
The interrupting capacity is the key figure for a sourcing decision: at 240 V the breaker clears 242 kA, at 415 V and 440 V it holds at 187 kA, at 500 V it drops to 121 kA, and at 690 V it is rated 3.7 kA. The 160 A rating is flat across the full -25 °C to 70 °C operating range — no thermal derating needed up to that ambient ceiling. The ETU350 trip unit supports selective coordination with downstream breakers, which matters when you are trying to isolate a faulted branch without dropping the main bus.
Physical integration
The breaker measures 105 mm wide, 181 mm high, and 86 mm deep. At 25.5 W maximum power loss, the heat load is moderate for a 160 A frame — panel ventilation planning should account for it when densely populated. The IP40 front protection is standard for switchboard mounting; no washdown rating, so this belongs in a dry indoor enclosure.