63 A C-curve MCB for panel distribution
Its 10 kA breaking capacity is certified under both IEC/EN 60898-2 and UL1077, covering the two dominant standards for panelboard and branch-circuit protection globally.
Thermal derating and ambient limits
Rated 63 A at 35 °C ambient, the breaker derates to 59.16 A at 40 °C, 57.14 A at 45 °C, 55.06 A at 50 °C, 52.92 A at 55 °C, and 50.65 A at 60 °C — a continuous curve that matters when the breaker shares a crowded enclosure with other heat sources.
