The Siemens SENTRON 3VA2116-6KQ32-0AA0 is a 3-pole molded case circuit breaker rated for a continuous current Iu of 160 A across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Breaking capacity is the headline: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V.
Panel integration and deployment
The optional motor drive allows remote electrical closing, useful for automated transfer schemes or remote-reset applications. Communication function is built in, supporting integration with higher-level monitoring systems.
Ground-fault and release detail
The ETU860 release is an electronic trip unit with LSI protection curves (long-time, short-time, instantaneous) plus ground-fault protection. The ground-fault monitoring uses summation current formation on the L-conductor — meaning it measures the vector sum of phase currents to detect leakage to earth. This is a true residual-current detection method, not a zero-sequence sensor, so it catches arcing ground faults that a simple overcurrent device would miss.