What this MCCB is and what the ratings mean for fit
The Siemens 3VA2110-5HL36-0BH0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) sized for line protection in distribution panels. It carries a continuous current rating of 100 A that holds flat from 40 °C through 70 °C — no derating needed as the panel warms up, which simplifies panel layout when you're stacking breakers in a confined enclosure. The interrupting ratings are the real story here: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. That 187 kA at 240 V means this breaker can sit at the main lug of a high-fault panel without needing a current-limiting fuse upstream — it handles the full available fault current on its own. At 690 V the 3.7 kA figure is lower, so verify the available fault current at that voltage if you're feeding a 690 V bus. It's a 3-pole unit with an undervoltage release (UVR) built in, plus two auxiliary switches and one trip alarm switch (HQ). The UVR means the breaker trips automatically when control voltage drops below a threshold — useful for safety circuits or coordinated shutdown sequences. The auxiliary switches let you feed status back to a PLC or indicator lamp without adding external relays.
Panel integration and physical fit
Dimensions are 181 mm high, 105 mm wide, 86 mm deep. That 86 mm depth is the dimension that matters when you're fitting it into a shallow wall-mount enclosure — measure the backpan-to-cover clearance before you cut the gland plate. Power loss is 12.5 W maximum at rated load. In a densely populated panel, that heat adds up — account for it in your thermal budget, especially if the breaker is enclosed in a separate compartment. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C. The storage range is wider because it's not dissipating heat — that's the limit for warehousing and shipping, not running.