The IUGN6-35787-20 is a single-pole hydraulic magnetic circuit protector from the IUGN series, featuring a sealed toggle handle with bushing mounting for panel seal integrity. This device provides low-cost power switching and accurate circuit control, incorporating a trip-free mechanism that ensures the circuit opens during an overload event even if the handle is forcibly held in the ON position. It is designed to operate in a wide ambient temperature range from -40°C to +85°C. The protector's robust, sealed construction makes it ideal for demanding applications such as data processing equipment, medical instrumentation, broadcast systems, and military use.