Catalogue User Manual Microprocessor Based Static ELR, 1-4A Model No : DEL-04 Frame Leakage protection for L.T. Control Panels and switch boards. Earth Leakage protection for Feeders / Motors / Generators / Transformers / MobileOperating Equipments. Protection for hazardous sensitive environments like Oil Refineries/ Cement Plant/SteelPlant /Chemical Platforms/Pulp industries and General Electrical Distribution. Protection for Mining & Control Engineering Specification Consistent reliability with accuracy. Fixed or variable current sensitivity by Dip Switch selection LED’s for visual indication of fault. High Barrier connector at rear for easy termination and safety standards. Tamper proof polycarbonate cover in the front. Test & Reset Facility for testing healthiness of the relay