It carries a continuous current of 50 A at 40 °C and holds that rating steady up to 50 °C — at 55 °C it derates to 49 A, and by 70 °C it's at 45 A. The interrupting ratings are the headline here: 187 kA at 240 VAC, 121 kA at 415 VAC, 76 kA at 440 VAC, and 17 kA at 500 VAC. The operating voltage is rated up to 690 VAC, with a DC rating of 500 V. Insulation voltage is 800 V. It measures 70 mm deep, 76.2 mm wide, and 130 mm tall, so it fits the standard 3-pole MCCB footprint on a DIN rail or panel-mount base.
It's a straight-ahead line-protection breaker for a distribution panel. Power loss is 15 W maximum at rated current — modest for a 50 A MCCB, but worth factoring into panel thermal calculations if the enclosure is tightly packed.