The Siemens 3VA2010-5KP32-0JC0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. That makes it a straight drop-in for a 100 A feeder or motor branch circuit in a 480 V panel, where many breakers start to lose capacity above 40 °C. Its adjustable thermal-magnetic trip unit covers 150 A to 1 200 A, so it can be tuned to protect a specific load — a 200 A compressor or a 600 A main — without swapping the breaker body. The 3-pole construction suits three-phase systems common in industrial distribution.
Interrupting ratings and fault clearing
The interrupting capacity is 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 480 V (common in North American plants) the 121 kA rating at 440 V is the closest published figure — expect it to clear high-fault scenarios on a 480 V transformer secondary without upstream fuses. Maximum power loss is 13.5 W, which keeps heat rise low in a crowded enclosure. The breaker includes a communication function for remote monitoring or trip indication, and a shunt trip (STL) auxiliary release for emergency-off or remote-trip circuits.
Panel fit and integration
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard MCCB footprint that fits most 600 V panelboards and motor control center buckets. The 3-pole body occupies three 18 mm pole spaces; verify the existing bus-stab pattern if retrofitting into an older panel.