What this MCCB delivers for a panel build
The Siemens SENTRON 3VA2010-7KQ46-0AA0 is a 4-pole molded case circuit breaker rated for 100 A continuous current, with a full-scale value of 100 A and an initial trip setting of 20 A. It is designed for line protection and includes a communication function for integration into a building management system or industrial network — no gateway hack required if the BMS speaks the same protocol. The breaker carries a maximum breaking capacity of 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3 kA at 690 V, so it handles high-fault-current scenarios typical of main distribution panels. The rated insulation voltage is 800 V.
Breaking capacity — what the numbers mean for selectivity
The 330 kA at 240 V is the ultimate short-circuit breaking capacity (Icu) at that voltage — it tells you the breaker can safely interrupt a fault up to that level without welding contacts or cascading failure upstream. At 415 V and 440 V the Icu drops to 242 kA, still high enough for most industrial service-entrance applications. At 690 V the Icu falls to 3 kA, so if your panel runs at 690 V, this breaker is only suitable for low-fault branches, not the main. For a site electrical engineer planning selective coordination, the 100 A continuous rating and the 150 A minimum breaking capacity give headroom for downstream breakers rated up to that level.
Thermal derating — flat from 40 °C to 70 °C
The breaker maintains its full 100 A rating across an ambient temperature range from 40 °C to 70 °C, with no derating required. That simplifies panel layout — you don't need to oversize the breaker or add forced cooling for a warm enclosure. The operating temperature range is -25 °C to 70 °C, and storage range is -40 °C to 80 °C.
Ground-fault monitoring and communication
This MCCB includes ground-fault monitoring using summation current formation on the L + N conductors — it detects leakage by comparing the vector sum of phase and neutral currents. The communication function (listed as present) allows the breaker to report status and trip events to a controller or BMS, which is useful for remote monitoring in a multi-vendor system. Power loss is rated at a maximum of 7.7 W.
Physical fit and panel integration
Dimensions are 86 mm deep, 140 mm wide, and 181 mm high (3.39 x 5.51 x 7.13 inches). The 4-pole width of 140 mm is standard for a 100 A frame — it will drop into a panel cutout sized for a SENTRON 3VA molded case breaker without rewiring, as long as the bus bars and lug spacing match the 4-pole footprint. No undervoltage release or voltage trip is fitted on this variant.
Lifecycle and sourcing posture
The lifecycle stage is listed as current — this is an active-production part, not a phase-out or NRND item. It is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time. No official successor has been announced, so this remains the standard BOM line for a 100 A 4-pole SENTRON MCCB with communication and ground-fault monitoring.