MCCB with a thermal-magnetic release and a derating curve you need to read
At 40 °C it carries 63 A continuously, and the derating is minimal up to 50 °C — still 63 A — then drops to 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. Breaking capacity is rated 121 kA at 240 V, 76 kA at 415 V, 53 kA at 440 V, and 12 kA at 500 V — so the available fault current at the panel location determines which voltage column governs the selection.
Front protection is IP40, so it keeps out tools and fingers but is not sealed against moisture — standard for panel-mounted MCCBs.
