What this MCCB does on the line
The Siemens SENTRON 3VA2010-5JQ32-0AB0 is a 3-pole molded case circuit breaker rated for line protection, carrying a full-scale value of 100 A across the entire ambient range from 40 °C to 70 °C — no derating curve to chase when the panel gets hot. With a breaking capacity of 187 kA at 240 V and 121 kA at 415 V, it handles high-fault utility feeds without cascading upstream — sized for main or large feeder duty in industrial switchboards. The 86 mm depth and 105 mm width fit standard SENTRON mounting patterns, so a panel builder can swap this into an existing 3VA lineup without redrilling the gland plate.
Panel fit and field notes
Dimensions are 86 mm deep by 105 mm wide by 181 mm tall — a 3-pole MCCB footprint that drops into a SENTRON panelboard or standalone enclosure without surprises. Maximum power loss is 13.5 W, which keeps internal cabinet temperature rise manageable even in a densely packed lineup. Operating temperature range of -25 °C to 70 °C and storage range of -40 °C to 80 °C cover most unheated plant floors and warehouse conditions.