The 50 A continuous rating holds up to 50 °C without derating; at 55 °C it's 49 A, at 60 °C it's 48 A, at 65 °C it's 46 A, and at 70 °C it's 45 A — so in a warm panel you lose 5 A by the time you hit 70 °C ambient. Interrupting capacity is 53 kA at 240 V AC and 8 kA at 415 V AC — the 415 V figure is the one to watch for three-phase line-to-line faults in a 400 V system; 8 kA is modest, so verify the available fault current at the installation point. The 53 kA at 240 V covers single-phase or line-to-neutral faults comfortably.
At 25.4 mm wide (1 inch), this single-pole MCCB snaps onto a DIN rail. Depth is 70 mm (2.76 in), height 130 mm (5.12 in). No trip indicator, no undervoltage release, no communication function — this is a bare thermal-magnetic MCCB with no auxiliaries. If you need remote signaling or undervoltage protection, you'll add external modules or step up to a 3VA-series frame that supports those accessories.
Maximum power loss is 5 W — negligible for panel thermal budgeting, but worth noting if you're packing many breakers into a sealed enclosure. Insulation voltage rated at 500 V, operating voltage up to 415 V AC or 125 V DC.