Littelfuse EL731-12-10 is a conformally coated product with 3 Form C relay contacts. It operates in both fail-safe and non-fail-safe modes. Its IEEE device numbers include 38, 49, 50G, 50N, 51G, 51N, and 79G. It has a front-panel switch and remote N.O. contact for reset, and offers standard harmonic filtering. It is suitable for solidly grounded AC, solidly grounded DC, and resistance grounded AC systems. It operates on 24V AC and 48V DC supply voltages. It is available with latching trip or non-latching alarm reset types. It supports DeviceNet communications and has a trip level range of 0.03 to 5.00A. It works with a single PTC/RTD temperature sensor configuration and can be mounted using DIN, panel, or surface methods (optional).