What this 100 A MCCB delivers — and where the fat isn't
The Siemens 3VA2110-6HN36-0AF0 is a SENTRON molded case circuit breaker rated for 100 A continuous current across the full ambient range up to 70 °C — no derating curve to chase at 40, 50, or 60 °C, it holds 100 A flat. Three-pole line-protection design, 800 V insulation voltage, and a breaking capacity that starts at 242 kA at 240 V and drops to 3.7 kA at 690 V — the SCCR headroom you need for high-fault utility feeds or transformer secondaries. The auxiliary switch configuration is 1 auxiliary + 1 trip alarm switch (HQ type), so you get both a status mirror and a separate fault-signal contact without adding a module. At 10 W max power loss, this MCCB runs cool enough to pack tightly on a DIN rail — no forced ventilation required in a standard IP54 enclosure.
Panel fit and wiring
Dimensions are 105 mm wide × 181 mm high × 86 mm deep — a standard 3-pole MCCB footprint that drops into existing SENTRON mounting plates and busbar systems without adapter brackets. Storage range from -40 °C to 80 °C means it can sit in an unheated warehouse or on a truck in transit without damage; operating range is -25 °C to 70 °C, covering most indoor panel environments.