Ambient temperature derating is built in: at 50 °C the continuous rating drops to 39 A, at 55 °C to 37.96 A. That matters if the breaker sits inside a hot, poorly ventilated enclosure near the mill.
The quick-assembly system and combined terminals top and bottom let a wireman land incoming and outgoing conductors without re-terminating the busbar. Sealable and touch-protected, with IP20 rating once conductors are connected. Halogen-free and silicon-free construction matters when the breaker lives near sensitive electronics or in areas with strict smoke-toxicity specs.
Listed under UL 1077 and CSA C22.2 No. 235 with a 5 kA interrupting rating — enough for North American panelboard branch circuits. The IEC 60947-2 rating of 25 kA covers most European and global industrial installations. Vibration resistance per IEC 60068-2-6 (±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz) means it shrugs off the vibration on a crusher floor. Production status is current; the part is in active manufacture.