Its 50 A continuous rating holds across 40 °C to 50 °C ambient, then derates to 45 A at 70 °C — so if your panel runs hot near the top of the enclosure, you lose 5 A of headroom. Breaking capacity is 76 kA at 240 VAC and 9 kA at 415 VAC — sufficient for most North American 240 V distribution panels; the 415 V figure tells you it clears faults on 400 V-class systems but you need to verify SCCR coordination with the upstream transformer.
This part is listed as current production.
Width is 25.4 mm (1 inch) — a standard 1-pole MCCB slot. Depth of 70 mm (2.76 in) and height of 130 mm (5.12 in).
Trip unit and protection design
Maximum power loss is 5 W, which is modest for a 50 A frame.