The AIRPAX/Sensata LELK1-1RS4-27129-916 is a hydraulic magnetic circuit protector offering low-cost power switching, reliable circuit protection, and accurate circuit control for a wide range of equipment. These protectors are suitable for applications requiring compliance with international standards and are available in various configurations, including single, two, three, and four-pole versions. They are commonly used in polyphase circuits, single-phase three-wire systems, and applications requiring electrically isolated circuits. The LEL models are UL listed, CSA certified, and CCC approved, ensuring reliable performance and safety.