The IUGN6-1REC4-72-50.0 is a single-pole hydraulic-magnetic circuit protector designed for reliable overcurrent protection and power switching. As part of the IUGN family, it features a sealed toggle with a silicone rubber seal, making it suitable for harsh environments. This protector has a current rating of 50.0 amperes, a maximum voltage rating of 80Vdc or 240Vac, and utilizes screw terminals for the main circuit. It incorporates a long time delay curve (type 72) for DC and 60Hz applications and includes a series-trip configuration with an integrated SPDT auxiliary switch for remote status indication. The temperature-stable hydraulic-magnetic design and trip-free action make it ideal for precision applications such as data processing, medical instrumentation, and military equipment.