SENTRON 3VA2 with ETU850 — 160 A, 440 kA at 415 V
The Siemens SENTRON 3VA2116-0KP46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 160 A continuous current, with an ETU850 electronic trip unit and a maximum breaking capacity of 440 kA at 415 V AC. This is a line-protection design, meaning it's specified for feeder and main breaker positions in distribution panels, not for direct motor starting.
Trip unit and protection flexibility
The ETU850 is an electronic overcurrent release with communication capability. It supports adjustable N-conductor protection from OFF through 20% to 100% of the phase rating, which matters for panels feeding mixed single-phase and three-phase loads where neutral current can exceed phase imbalance. The trip indicator is absent, so fault-event logging relies on the communication interface rather than a local mechanical flag. Power loss at full rated current is 19.7 W — a figure to include in enclosure thermal calculations if the breaker is in a sealed, uncooled cabinet.
Front-face protection is IP40, adequate for enclosed distribution boards but not for washdown areas. Dimensions are 181 mm height, 140 mm width, 86 mm depth.