The Siemens 3VA2010-8KQ46-0AA0 is a 4-pole SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous current, designed for line protection with integrated ground-fault monitoring via summation current formation on the L + N conductor. Breaking capacity runs 440 kA at 240 V, 330 kA at 415 V, 330 kA at 440 V, 220 kA at 500 V, and 52.5 kA at 690 V — that's enough SCCR headroom for most industrial service-entrance and distribution panels without cascading upstream. Rated insulation voltage is 800 V.
What the ratings mean for fit
The 100 A continuous rating holds flat from 40 °C to 70 °C — no derating curve to chase across the ambient range of a warm panel. The 4-pole construction (switching all three phases plus neutral) is what you need for TN-S or TT systems where the neutral must be protected and switched; it also simplifies coordination in a fully rated distribution scheme. Ground-fault monitoring uses summation current sensing on L + N — it detects leakage without a separate GFCI module, which saves a DIN space and a wiring step. Communication function is onboard, so this breaker can talk to a higher-level monitoring system for load profiling or remote trip indication — useful on a line where you want to know what popped without walking the panel. Max power loss of 7.7 W is low enough that you don't have to budget extra cooling for a densely packed enclosure.
Mounting and panel integration
Dimensions are 181 mm high, 140 mm wide, 86 mm deep — a standard MCCB footprint that fits most DIN-rail or bolt-on panel layouts without rework. Operating temperature range of -25 °C to 70 °C covers unheated electrical rooms and outdoor enclosures in most climates; storage range extends to -40 °C to 80 °C for warehousing.