What this MCCB is and what it does
The Siemens SENTRON 3VA2110-5MN36-0DC0 is a 3-pole molded case circuit breaker (MCCB) rated at 100 A continuously across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. It is designed specifically for motor protection, with built-in phase failure detection and an undervoltage release (UVR) that trips the breaker when supply voltage drops below the dropout threshold, preventing single-phasing damage to motor windings.
Breaking capacity — what the numbers mean for your fault level
This MCCB carries a 187 kA interrupting rating at 240 V AC, dropping to 121 kA at 415 V and 440 V, then 75.6 kA at 500 V, and 3.7 kA at 690 V. Those are the maximum fault currents the breaker can safely clear at each voltage level. For a motor feeder on a 415 V system with a prospective short-circuit current of, say, 85 kA, this breaker has headroom to spare. The 690 V figure (3.7 kA) is low enough that you should verify the available fault current if the breaker is applied on a 690 V line.
Panel fit and integration notes
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — a standard SENTRON 3VA frame size that mounts on a DIN rail or directly to a backplate via the supplied screw terminals. The breaker ships with two auxiliary switches (HQ design) and the undervoltage release pre-installed; no separate add-on modules to order. Maximum power dissipation is 12.5 W, so factor that into enclosure thermal calculations if the panel is densely packed.
Environmental range and storage
Operating temperature spans -25 °C to 70 °C; storage range is -40 °C to 80 °C. The storage limits govern handling and warehousing, not running conditions. No ground-fault monitoring version is included (this unit is the standard motor-protection variant without GF).