SENTRON 3VA2110-5KP32-0JC0 — 100 A MCCB for Line Protection
The Siemens SENTRON 3VA2110-5KP32-0JC0 is a 3-pole molded case circuit breaker rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. It is designed specifically for line protection, meaning it guards cables and busbars against overload and short-circuit, not motor or generator circuits. The interrupting capacity reaches 187 kA at 240 V and still holds 121 kA at 415 V and 440 V, which gives substantial fault-current headroom for most industrial distribution panels. At 690 V the rating drops to 3.7 kA, so verify the available fault current if deploying on a 690 V line.
What the Ratings Mean for Panel Integration
Dimensions are 105 mm wide, 181 mm high, and 86 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without re-drilling. The unit ships with a shunt trip (STL) auxiliary release and two HQ auxiliary switches, so remote tripping and status feedback are built in without adding external modules. A communication function is included, which on the 3VA platform typically means a modular communication-capable trip unit; confirm the protocol interface (PROFIBUS, PROFINET, or Modbus) when specifying the system integration.
Selectivity and Coordination Note
The 100 A frame with a 1 200 A maximum and 150 A minimum setting range (on the trip unit) gives the panel designer flexibility to coordinate downstream breakers. The 187 kA SCCR at 240 V means this breaker can be installed ahead of a 65 kA-rated downstream panel without cascading failure — a common requirement for service-entrance or main-switchboard positions. At 415 V the 121 kA rating still covers most industrial transformer secondaries.