63 A MCCB with flat thermal derating across the panel
The Siemens SENTRON 3VA2063-5HL32-0AD0 is a 3-pole molded case circuit breaker rated for 63 A continuous current, with no derating from 40 °C through 70 °C ambient — every temperature point in that band carries the full 63 A. Breaking capacity varies sharply with system voltage: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. That 690 V figure means this breaker is not intended for 690 V line-side faults — the 3 kA limit is a coordination constraint, not a primary rating.
Panel fit and auxiliary switch configuration
Current lifecycle stage and sourcing posture
The breaker carries a maximum power loss of 5.4 W, which is typical for a 63 A frame and keeps internal panel temperature rise manageable in a crowded enclosure.