What it is and what it does
The Siemens 3VA2010-6KP46-0AA0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in industrial power distribution. It carries a continuous current rating of 100 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to the top end, which simplifies panel sizing in warm enclosures. The 4-pole configuration handles three-phase plus neutral, and the ETU850 electronic trip unit provides adjustable overload and short-circuit protection with communication capability — a step up from thermal-magnetic units for selective coordination studies.
Breaking capacity — what the numbers mean
The interrupting ratings tell you where this breaker can be installed without cascading upstream. At 240 V it clears 242 kA — that's utility-grade fault current, typical for a main or large feeder in a 240 V distribution board. At 415 V and 440 V it still holds 187 kA, and at 500 V it manages 121 kA. The drop to 3 kA at 690 V means it is not a 690 V main breaker — at that voltage it protects a downstream branch with limited fault current.
Panel fit and integration
Dimensions are 181 mm high, 140 mm wide, 86 mm deep — a 4-pole frame that fits standard switchboard mounting. The front face carries IP40 protection, meaning it's protected against tools and solid objects larger than 1 mm but not sealed against moisture; install inside a suitable enclosure for washdown or outdoor environments.