Square D LA molded case circuit breakers offer both thermal and magnetic protection automatically opening the circuit in case of overload or short circuit, with manual tripping via the Push-to-Trip feature that allows safe operation without exposure to live parts. These units are available as 3-pole, 400A, and 600VAC rated devices with built-in interrupting ratings for 22kA at 600VAC and 10kA at 250VDC, also meeting standards such as UL 489, CSA, and IEC certifications.