The SENTRON 3VA4110-1BB34-0AA0 is a 3-pole molded-case circuit breaker (MCCB) rated for a continuous current of 100 A across ambient temperatures from 40 °C up to 60 °C, derating to 97 A at 65 °C and 94 A at 70 °C. That flat 100 A band means you can mount it in a warm panel without losing capacity until the internal air hits 65 °C — common in enclosed switchgear with multiple breakers stacked. The MCS110 overcurrent release is a fixed instantaneous-only (I) type, set at 1600 A (li). No thermal or short-time delay adjustment — this is a switch-disconnector with fault make-and-break capability, not a full selective breaker. Use it where you need a load-break switch with magnetic trip for short-circuit backup, not for cable overload protection. Dimensions are 76.2 mm wide, 129.4 mm tall, and 75.1 mm deep — a compact 3-inch-wide footprint that fits standard SENTRON panel cutouts.
Maximum power loss is 18.5 W at rated current — a modest heat load for a 3-pole MCCB. Electrical endurance is 8 000 switching cycles at 480 V, which covers routine switching in a motor branch circuit or distribution panel over many years of normal operation.
No auxiliary contacts are included (0 CO contacts), and no communication function or motor drive option is fitted — this is a standalone breaker. Ground-fault monitoring is absent. For a simple branch-circuit disconnect with short-circuit backup, it's a clean drop-in. The storage limit is wider because the breaker isn't dissipating heat when stored — handle it accordingly if it sits in an unheated warehouse.