The Earth Fault Relay (OEM Part No. 3176000488) is a spare part compatible with M4C, E70, M40S, EST 1030, Boomer 291, 235 bolting rigs, and EST-2D drilling equipment. It serves as an electrical component for the rig electrical fault protection assembly at the earth fault relay mount position. It detects earth leakage faults and helps protect electrical systems from damage during operation. Designed for underground mining applications, this relay provides reliable protection and stable electrical performance. Precise OEM specifications ensure easy installation and dependable operation.