Four poles, rated continuous current Iu of 50 A, and a TM220 thermal-magnetic overcurrent release. At 415 V the breaking capacity drops to 76 kA, at 440 V to 53 kA, and above 500 V it settles at 11.9 kA through 690 V. That steep curve means you need to check the actual line-to-line voltage at the fault point — specifying this breaker on a 690 V feeder without confirming the 11.9 kA headroom will leave you with a coordination gap.
Above that it starts to taper: 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C.