What this MCCB carries — and what that means for the panel
The Siemens SENTRON 3VA2110-5HL36-0CH0 is a 3-pole molded case circuit breaker rated for 100 A continuous current at 40 °C, with an adjustable thermal-magnetic trip unit covering 150 A to 1 200 A. That trip range means you set the instantaneous pickup to match the downstream load's inrush — useful for motor or transformer feeders where you want to avoid nuisance trips on startup while still clearing a hard fault. Breaking capacity runs 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. At typical 480 V distribution, that 121 kA SCCR covers most industrial service-entrance and sub-feed applications without needing a current-limiting fuse upstream. It ships with an undervoltage release (UVR) built in — the coil drops the breaker if control voltage falls below the dropout threshold, which is standard for emergency-stop circuits and safety interlock schemes where loss of control power must open the main disconnecting means.
Panel fit and integration
Dimensions are 105 mm wide, 181 mm high, 86 mm deep. The auxiliary switch configuration is 2 auxiliary switches plus 1 trip alarm switch (HQ type), which gives you one N/O + one N/C for status feedback and a separate alarm contact that closes only on a trip event — not on manual switching. That lets a PLC distinguish a breaker trip from a normal open command.
Temperature derating — what the 100 A rating actually means
The continuous current rating holds at 100 A across the full operating temperature range from 40 °C to 70 °C, with no derating required up to the maximum ambient of 70 °C. That is unusual for a molded case breaker — most need a derate factor above 40 °C. If your panel internal ambient stays under 70 °C, you can load this breaker to its full 100 A nameplate.