Above that it derates: 48 A at 55 °C, 47 A at 60 °C, 46 A at 65 °C, 45 A at 70 °C.
Rated short-circuit breaking capacity (Icu) drops as system voltage rises: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, 17 kA at 690 V. At 480 V (common in North American industrial), the 415 V figure is the closest published — expect the actual rating to fall between 121 kA and 75.6 kA. For 690 V systems, the 17 kA limit means this breaker is only suitable where the prospective fault current is well below that.
Dimensions: 130 mm height, 76.2 mm width (3-pole), 70 mm depth. The width matches the standard 3-pole MCCB footprint — drops into a panel lugged for 50 A class breakers. The 2 auxiliary switches (HQ type) are built in, and an undervoltage release is fitted — verify coil voltage against your control circuit before wiring.