Its continuous current rating holds 50 A from 40 °C up through 50 °C, then derates to 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. If your load draws 48 A and the panel runs at 60 °C, this breaker still holds without nuisance tripping.
Breaking capacity — the real fault-handling envelope
This MCCB delivers 52.5 kA at 240 V, 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at both 500 V and 690 V. The 52.5 kA figure at 240 V is the headline number, but the 32 kA at 415 V is what matters for a 400 V-class panel — that covers most industrial distribution transformers up to about 2 MVA. At 690 V the 7.5 kA rating still clears a fault in a 690 V drive line-up, though you'd want to verify coordination with upstream fuses if the available fault current exceeds that.
Built-in auxiliary release and switch configuration
The shunt trip lets a remote emergency-stop button or a PLC output trip the breaker without pulling the handle.
Power loss and thermal budget
Maximum power loss is 14.6 W. In a sealed, high-fill-factor panel, that heat stays inside; if you're stacking several breakers in a row, factor the cumulative loss into the enclosure's ventilation or forced-air cooling.
The 76.2 mm width is exactly three 25.4 mm (1-inch) module spaces — standard for a 3-pole MCCB on a DIN rail or panel-mount footprint. Depth of 70 mm means it clears most shallow enclosures; verify the door clearance for handle operation.