The Siemens SENTRON 3VA2010-7HM46-0AA0 is a 4-pole molded case circuit breaker rated for 100 A continuous current, designed for line protection in distribution panels. Its interrupting capacity reaches 330 kA at 240 V, stepping down to 242 kA at 415 V and 440 V, and 187 kA at 500 V — at 690 V it holds 3 kA, which tells you this breaker is built for low-voltage main or feeder duty, not 690 V branch circuits. The 100 A rating holds flat across the full ambient range from 40 °C to 70 °C, so no derating curve to chase in a warm enclosure.
Interrupting ratings and what they mean for panel fit
The 330 kA at 240 V is the headline number, but the real-world decision point for most industrial panels is the 242 kA at 415 V — that covers common 400 V class distribution. If your upstream transformer or utility fault current at the service entrance exceeds that, you need a current-limiting upstream device or a higher-rated frame. The 3 kA at 690 V is a residual rating; this breaker is not your primary choice for 690 V switchgear.
Dimensions and panel integration
At 86 mm deep, 140 mm wide, and 181 mm tall, this MCCB fits standard SENTRON 3VA mounting footprints. The 140 mm width is the key dimension for multi-pole grouping in a panel — four poles at that width means 35 mm per pole, which is typical for this frame class. Power loss at rated current is 7.7 W, manageable for thermal budgeting in a sealed enclosure but worth checking if you're packing multiple breakers in a small cabinet.
Ground-fault and monitoring capability
This variant includes ground-fault monitoring via summation current formation on L + N conductors — it senses the vector sum of line and neutral current, so it catches leakage to ground without a separate sensor. No undervoltage release, no communication function, and no trip indicator on this order code; if those are required, you'd step to a different 3VA variant.