Rated 63 A, 187 kA at 240 V — line protection for high-fault panels
The Siemens SENTRON 3VA2163-5HL36-0JH0 is a 3-pole molded case circuit breaker rated for 63 A continuous current at 40 °C, with no derating needed all the way up to 70 °C — every temperature point in the evidence shows 63 A solid. That means it holds its full rating in a hot panel, which matters when you're packing breakers tight on a DIN rail or inside a sealed enclosure. Interrupting capacity hits 187 kA at 240 V, drops to 121 kA at 415 V and 440 V, then 75.6 kA at 500 V, and 3.7 kA at 690 V. That 187 kA at 240 V tells you this breaker is built for high-fault industrial distribution where a line-side transformer can dump serious short-circuit current. The 3.7 kA at 690 V is still enough for most 690 V motor circuits, but if you're close to a big transformer you'll want to check the available fault current against that number.
Built for line protection with shunt trip and auxiliary switching
This MCCB is designed as line protection — it protects the feeder, not a specific load. It comes with a shunt trip (STL) for remote tripping, plus two auxiliary switches and one trip alarm switch (HQ). That's enough aux contacts to signal a PLC that the breaker has tripped, or to interlock with another device. The 86 mm depth, 105 mm width, and 181 mm height fit a standard MCCB footprint — it'll drop into a SENTRON panel or any distribution board with the right busbar spacing. No undervoltage release on this variant, so if you need UVR for a machine safety circuit, you'll want a different order code in the 3VA2 family.