160 A MCCB with 187 kA interrupting capacity — fit and sourcing
The Siemens SENTRON 3VA2116-5HN36-0AD0 is a 3-pole molded case circuit breaker rated for 160 A continuous current, sized for line protection duty in distribution panels. Its interrupting capacity hits 187 kA at 240 V AC and still holds 121 kA at 415 V and 440 V — meaning it can clear high-fault currents on the secondary side of a large transformer without upstream coordination headaches. At 690 V the rating drops to 3.7 kA, so this is a low-voltage distribution breaker, not a motor-circuit device. The breaker measures 86 mm deep by 105 mm wide by 181 mm high, which fits the standard 3-pole MCCB footprint for panelboard mounting. It carries no undervoltage release, no ground-fault monitoring, and no communication module — a straight line-protection device with three auxiliary switches HQ for status feedback.
Thermal performance and ambient derating
The breaker holds its full 160 A rating across the ambient range from 40 °C to 70 °C without derating — useful for a crowded panel where internal temperatures run high. Maximum power loss is 25.5 W. Operating temperature span runs from -25 °C to 70 °C; storage from -40 °C to 80 °C.