Littelfuse EL731-03-10 is a conformally coated relay device with 3 Form C (N.O./N.C.) contacts. It operates in both fail-safe and non-fail-safe modes and has IEEE Device Numbers 38-49-50G-50N-51G-51N-79G. It features a reset switch and remote N.O. contact, standard harmonic filtering, and auto/manual reset options. It supports EtherNet-IP communication and has a supply voltage of 120/240VAC and 120/240VDC. It is suitable for solidly grounded AC/DC and resistance grounded AC systems, with a GF trip time of 0.05-2.00s and a trip level of 0.03-5.00A. It also offers single PTC/RTD temperature sensor configuration and can be mounted on DIN, panel, or optional surface.