Siemens SENTRON 3VA2110-5JQ32-0KL0 — 100 A MCCB for Line Protection
The Siemens SENTRON 3VA2110-5JQ32-0KL0 is a 3-pole molded case circuit breaker (MCCB) rated at 100 A full-scale, designed for line protection in industrial distribution panels. It carries a 187 kA interrupting capacity at 240 V, dropping to 121 kA at 415 V and 440 V, then to 75.6 kA at 500 V, and 3.7 kA at 690 V — so the available fault current at your service voltage is the deciding factor for whether this breaker clears without upstream coordination issues. Continuous current rating holds at 100 A across the full ambient range from 40 °C to 70 °C, meaning no derating is needed for typical panel temperatures — a useful simplification when populating a BOM for a warm enclosure.
Interrupting Capacity and Selectivity Planning
At 240 V the 187 kA SCCR is high enough for most service-entrance and large subfeed applications. At 415/440 V the 121 kA rating still covers heavy industrial fault levels. The drop to 75.6 kA at 500 V and 3.7 kA at 690 V means this breaker is not suited for 690 V main feeders with high fault current — for that voltage class you would step up to a higher-rated frame. The 100 A continuous rating is flat across the temperature range, so no thermal derating tables are needed for panel design.
Physical Fit and Auxiliary Configuration
Dimensions are 86 mm deep, 105 mm wide, and 181 mm high — a standard 3-pole MCCB footprint that fits most Siemens SENTRON panelboards and switchgear cubicles without adaptor plates. The auxiliary switch complement includes 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch (HQ type), plus a shunt trip release (STL) for remote tripping. A communication function is built in, enabling integration with energy management or SCADA systems. Maximum power dissipation is 10 W at rated load, which is modest for a 100 A frame — panel ventilation requirements are minimal.