The Siemens SENTRON 3VA2110-5MN32-0AJ0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current, holding that rating across the full ambient temperature range from 40 °C to 70 °C without derating — that 100 A is the same at 70 °C as it is at 40 °C, which simplifies panel thermal budgeting in a crowded enclosure. Breaking capacity at 415 V is 121 kA, sufficient for high-fault installations where the available short-circuit current exceeds typical 50–65 kA MCCB ratings. At 240 V it reaches 187 kA, and at 690 V it drops to 3.7 kA — the part is designed for 400 V class distribution, not 690 V motor circuits. This unit is designated for motor protection, with phase failure detection built in. It carries a trip indicator for visual confirmation of a fault event, and its auxiliary switch configuration — 2 auxiliary switches plus 1 trip alarm switch HP — supports remote status monitoring without an add-on module.
Lifecycle and sourcing
For BOM freeze and PCN-watch purposes, the 3VA2110-5MN32-0AJ0 is under change control; any revision to its design or supply status would trigger a manufacturer notification. Sourced and quoted to order against an RFQ through independent distribution — availability and current pricing confirmed at quote time.
Integration and mounting
Footprint dimensions are 105 mm wide by 181 mm tall by 86 mm deep — a standard SENTRON 3VA2 frame size that fits existing panel cutouts and DIN-rail mounting patterns for this class. The 86 mm depth leaves clearance for rear-connected busbars in a typical 400 mm deep enclosure. Maximum power loss at rated current is 10 W, which is low enough that forced ventilation is not required in a standard IP54 panel, but should be accounted for in a sealed, high-density layout alongside other heat sources. Operating temperature range is -25 °C to 70 °C; storage range extends from -40 °C to 80 °C. The storage limit governs handling and warehousing, not running conditions.