What this MCCB is and what it does
The Siemens 3VA2110-6KQ46-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous current in a 4-pole configuration, designed for line protection in distribution panels. The 100 A rating holds flat from 40 °C through 70 °C ambient — no derating curve to chase when the panel runs hot near a furnace or summer roof. Breaking capacity runs 242 kA at 240 V, 187 kA at 415/440 V, 121 kA at 500 V, and 3.7 kA at 690 V, so it handles high-fault utility feeds downstream of a transformer. Ground-fault monitoring uses summation current formation on L+N conductors, and the breaker includes a communication function for integration into a plant monitoring system.
Dimensions and panel fit
The breaker measures 181 mm high, 140 mm wide, and 86 mm deep. That 86 mm depth (3.39 in) matters when the MCCB sits in a shallow enclosure or a pull-section behind a deadfront — verify the gutter depth before laying out the bus bars. Width of 140 mm (5.51 in) is standard for a 4-pole SENTRON 3VA frame; it occupies four 35 mm DIN-rail modules worth of panel width if using the optional DIN-rail mount adapter.
What the ratings mean for your coordination study
The 100 A continuous rating is the breaker's full-scale value — set the Ir (thermal) long-time pickup at or below this for the protected feeder. The 242 kA interrupting rating at 240 V tells you this MCCB can safely clear a fault at that level without venting or upstream cascade; at 690 V the same frame drops to 3.7 kA, so verify the available fault current at the installation voltage. Insulation voltage is rated 800 V, which covers 480/277 V and 600 V systems with margin. The 10 W maximum power loss at rated load is heat that stays inside the enclosure — factor it into the panel thermal budget if the MCCB shares a compartment with electronics.