For panel environments above 40 °C, derating applies per the thermal curve — the 80 A figure is the baseline, not a ceiling for hot enclosures. Category A utilisation means it is not specifically designed for motor starting duty — it is a distribution breaker, not a motor circuit protector.
This breaker is for distribution panels — switchboards, sub-distribution boards, and load centres — protecting cables and downstream equipment against overload and short-circuit. It mounts on a backplate, with front-facing connections for compression lugs or busbars. The 9-module pitch (9 x 9 mm = 81 mm width) fits standard modular enclosure cutouts. IP40 rated for indoor use; IK07 impact resistance handles incidental contact during panel servicing.