Its 16 A rating holds flat from 40 °C up to 55 °C, then derates to 15 A at 60 °C and above — so no head-scratching about summer ambient in a non-climate-controlled panel.
Breaking capacity — what it means on the line
The interrupting ratings are given at several voltages: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. At 690 V the 17 kA figure is still respectable for motor branch circuits.
