What this MCCB is and what it does
The Siemens SENTRON 3VA2110-6HL32-0KH0 is a 3-pole molded case circuit breaker (MCCB) designed for line protection in distribution panels and industrial switchgear. It carries a continuous current rating of 100 A, which holds flat across the entire ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling. The interrupting capacity tells you where this breaker can be applied: 242 kA at 240 V AC, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V. That 242 kA figure at 240 V is unusually high — it means this breaker can be used on the secondary side of a large distribution transformer where fault currents are severe, without needing a current-limiting fuse upstream. This is a line-protection device (not a motor-protection or generator-protection variant), so it's sized for cable and busbar protection in a main or feeder breaker role. The 3VA2 frame is the higher-interrupting series within the SENTRON family, suited for installations where SCCR requirements are demanding.
Auxiliaries and releases built in
Factory-fitted with 2 auxiliary switches plus 1 trip alarm switch (HQ designation), and a shunt trip release (STL). That means you get remote status indication and remote tripping capability out of the box — no separate aux kit to order. The shunt trip allows a PLC or safety relay to open the breaker on demand, which is useful for emergency-stop circuits or interlocking schemes. No undervoltage release or ground-fault monitoring is included on this variant. If UVR or GF protection is needed, that's a different order code within the 3VA2 family. The trip indicator and voltage trigger features are present, so local visual trip indication is standard.
Physical fit and panel integration
Dimensions are 181 mm high, 105 mm wide, 86 mm deep. That 105 mm width is the standard 3-pole MCCB footprint for this frame size — it fits the same panel cutout and busbar spacing as other 3VA2 three-pole breakers. The 86 mm depth means it protrudes less than older SENTRON frames, which can help with shallow enclosure fit. Maximum power loss is 10 W, which is moderate for a 100 A MCCB. In a sealed enclosure with multiple breakers, that heat adds up — factor it into your thermal budget rather than assuming zero dissipation.
Lifecycle and sourcing posture
Operating temperature range is -25 °C to +70 °C, storage from -40 °C to +80 °C. That covers most indoor industrial environments and unheated warehouses. The 100 A rating is continuous at any temperature within the operating range, so no summer derating worry.