What this MCCB delivers on the line
The Siemens SENTRON 3VA2110-5KP32-0AD0 is a 3-pole molded case circuit breaker rated for 100 A continuous current, designed for line protection in distribution panels. Its 187 kA interrupting capacity at 240 V AC handles high-fault scenarios typical in industrial feeder circuits, while the 121 kA rating at 415 V and 440 V covers common European and North American distribution voltages. At 690 V the rating drops to 3.7 kA — still adequate for motor-circuit protection in grounded-wye systems, but the key number for sizing is the 100 A frame at the actual system voltage. This MCCB carries a communication function, meaning it can integrate with plant monitoring or energy management systems — useful for a pulp mill or continuous process line where you want breaker status and load data back in the DCS without a separate I/O run.
Breaking capacity — what the numbers mean for your panel
The 187 kA at 240 V is the short-circuit current rating (SCCR) at that voltage — the maximum fault current this MCCB can safely interrupt without welding contacts or rupturing the case. At 415 V and 440 V the rating holds at 121 kA, which covers most industrial secondary-distribution transformers. At 500 V it's 75.6 kA, and at 690 V it drops to 3.7 kA. If your panel feeds a 690 V motor drive, verify the available fault current at that bus; the 3.7 kA limit may require upstream current-limiting fuses or a larger-frame breaker.
Thermal performance across the panel ambient range
Rated 100 A continuous from 40 °C all the way through 70 °C ambient — no derating needed in a warm enclosure. That's a solid spec for a mill MCC room or a hot rooftop panel where summer ambients push 55 °C. Power loss is 10 W maximum, so heat buildup inside a compact panel is manageable.
Physical fit and auxiliary configuration
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — a standard 3-pole MCCB footprint for DIN-rail or panel-mount installation. The breaker ships with three auxiliary switches (HQ type) fitted, so you get remote status indication without ordering add-on modules separately. No undervoltage release or ground-fault monitoring on this variant — those are separate accessories if your application requires them.