What this MCCB is and what it handles
The Siemens 3VA2010-5HL36-0CC0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection — meaning it sits at the feeder or branch to protect cables and buswork, not a specific motor or load. Rated 100 A continuous across the full ambient range from 40 °C to 70 °C, so no derating curve to chase in a warm panel. Three-pole construction handles three-phase circuits. The interrupting ratings are tiered by system voltage: 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3 kA at 690 V. That 187 kA figure at 240 V covers high-fault scenarios common on large transformer secondaries. Power loss is 16 W maximum — a number to factor into panel thermal calculations if the enclosure is tight. Operating temperature spans -25 °C to 70 °C; storage from -40 °C to 80 °C.
Panel fit and auxiliary options
Footprint is 105 mm wide by 181 mm tall by 86 mm deep. Mounts on a DIN rail or directly to a backplate. Comes fitted with an undervoltage release (UVR) and two HQ auxiliary switches. The UVR trips the breaker when control voltage drops — common in emergency-stop chains or undervoltage protection schemes. The auxiliary switches give status feedback to a PLC or indication lamp without extra add-on modules.
What the ratings mean for your panel
The 100 A continuous rating is flat from 40 °C to 70 °C. That means no derating in a warm enclosure. Line protection design means the thermal-magnetic trip curve is set for cable and bus protection, not motor overload. If you need motor protection, you'd pair this with a separate overload relay or choose the motor-protection variant of the 3VA family.