What this MCCB is and what it does
The Siemens 3VA2110-5HL36-0KA0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection in distribution panels. It carries a rated continuous current Iu of 100 A at 40 °C, with the same rating holding at 45 °C and 50 °C before derating begins at 55 °C (96.25 A) down to 85 A at 70 °C. Breaking capacity is 187 kA at 240 V, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 4.25 kA at 690 V — figures that cover most industrial low-voltage fault levels. The rated insulation voltage Ui is 800 V. The overcurrent release is an ETU320 electronic unit, and the auxiliary release is a shunt trip (STL). The basic switch is order code 3VA2110-5HL36-0AA0; the integrated auxiliary trip is 3VA9688-0BL33.
Panel fit and mounting
Dimensions are 105 mm wide, 181 mm high, and 86 mm deep — a standard 3-pole MCCB footprint for DIN-rail or screw-mount panel integration. The 86 mm depth is the dimension to check against enclosure gland-plate clearance and door swing. Maximum power loss is 10 W, which feeds into the enclosure thermal budget for derating calculations.
Operating limits and environment
Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The part has no trip indicator, no undervoltage release, no communication function, no phase failure detection, and no auxiliary contacts. It does include a voltage trigger. Mechanical endurance is rated at 20,000 operations — a figure that governs the maintenance interval for the breaker in high-cycle applications.