MCCB for motor protection duty
The Siemens 3VA2110-7MN36-0CL0 is a SENTRON molded case circuit breaker (MCCB) designed specifically for motor protection, with a continuous current rating of 100 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to the maximum operating temperature. Rated for 3-pole operation, it includes an undervoltage release and phase failure detection as integral functions, making it suited for protecting three-phase motor loads in industrial control panels where loss of a phase or voltage dip could damage the driven equipment.
Breaking capacity and selectivity
The interrupting rating reaches 330 kA at 240 V AC and 242 kA at 415 V and 440 V AC — figures that place this MCCB well into the high-fault category, suitable for installation close to large transformers or in heavy industrial distribution where available fault current is substantial. At 690 V AC the breaking capacity drops to 3.7 kA, so for 690 V applications this breaker is best used downstream of a current-limiting device or where the prospective fault current is known to be low.
Auxiliary switch complement and trip indication
The breaker ships with a built-in auxiliary switch block comprising 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch — a total of four signal contacts that can report breaker status and trip events back to a PLC or annunciator panel. A trip indicator is present on the front face, giving a local visual confirmation that the breaker has tripped on fault rather than being manually opened.
Physical footprint and panel fit
Dimensions are 181 mm high, 105 mm wide, and 86 mm deep — a standard 3-pole MCCB footprint that fits most SENTRON mounting bases and panel cutouts without requiring adapter plates. Maximum power dissipation is 12.5 W, which should be factored into the enclosure thermal budget when grouping multiple breakers in a sealed panel.