What the ratings mean for the panel
The 3VA2010-5JQ32-0KA0 is a 3-pole SENTRON molded case circuit breaker (MCCB) from Siemens, designed for line protection in distribution panels. Its adjustable thermal-magnetic trip unit covers 20 A to 100 A full-scale, so one frame size covers a range of feeder or branch circuits — you set the pickup with the dial, not by swapping the breaker. Breaking capacity is the headline: 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. At typical 400 V class distribution voltages, that 121 kA SCCR means this breaker can sit ahead of a transformer or a high-fault bus without needing a current-limiting fuse upstream — it interrupts the full available fault current on its own. A built-in communication function allows the breaker to report status and trip events to a BMS or PLC. It carries a shunt trip release (STL) for remote emergency-off or undervoltage tripping, and the ground-fault monitoring version uses summation current formation on the L-conductor — meaning it sums phase currents to detect leakage to earth.
Physical fit and panel integration
Dimensions: 86 mm deep, 105 mm wide, 181 mm tall. That 105 mm width is a standard 3-pole MCCB footprint — it fits the same panel cutout and bus-bar spacing as other SENTRON 3VA frame breakers. The 86 mm depth means it clears most 200 mm deep enclosures with room for wiring gutters. Power loss is 13.5 W maximum at rated load — negligible for thermal budgeting in a ventilated panel, but worth noting if the breaker is packed tightly with other heat sources in a sealed enclosure. Operating temperature range: -25 °C to 70 °C; storage from -40 °C to 80 °C. No derating required across the full ambient range up to 70 °C — the trip unit holds its 100 A rating from 40 °C through 70 °C without adjustment.