What this MCCB carries and where it fits
The Siemens SENTRON 3VA2163-5HL32-0KL0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to the 70 °C operating maximum. That flat thermal curve simplifies panel sizing in warm enclosures or near other heat sources. Its interrupting ratings climb to 187 kA at 240 V, drop to 121 kA at 415 V and 440 V, then to 75.6 kA at 500 V, and 3.7 kA at 690 V. The 187 kA figure at 240 V tells you this breaker handles high available fault current on 240 V distribution — typical for large transformer-fed panels or industrial service entrances where the upstream transformer is close-coupled.
Line protection design with integrated accessories
This variant is configured for line protection — the base design of the product is protection of the feeder or branch circuit, not motor or generator protection. It ships with a shunt trip release (STL) and an auxiliary switch block carrying 2 auxiliary switches plus 1 trip alarm switch plus 1 electrical alarm switch. The trip indicator and voltage trigger are present; undervoltage release and ground-fault monitoring are not fitted on this order code. Dimensions are 105 mm wide, 181 mm high, 86 mm deep — a standard 3-pole MCCB footprint that fits SENTRON panel-mounting accessories and busbar systems. The 4 W maximum power loss at rated current is low enough that internal cabinet heating from the breaker itself is negligible in a ventilated enclosure.