LMLB1-1RLS4R-37028-50-V is a single-pole hydraulic magnetic circuit protector designed for reliable circuit protection and power switching in industrial applications. Based on the IAL/CEL/LEL series specifications, this unit operates at 65 volts DC with a nominal current rating of 50 amperes and features a DC resistance of 0.0019 ohms. The protector is configured for single-pole operation with a panel thickness tolerance of ±0.005 inches (±0.13 mm) and a dimension A of 0.760 ± 0.007 inches (19.30 ± 0.18 mm). It provides adjustable thermal and magnetic trip delays across multiple current levels (100% to 1000% of rated current), enabling precise circuit control for equipment in the international marketplace. This device is suitable for DC power distribution systems requiring accurate overload and short-circuit protection with low-cost implementation.