The Multilin™ 850 relay is a member of the Multilin 8 series protective relay platform and has been designed for the management, protection, application control and complete monitoring of single or dual subway and overhead feeders in industrial and utility power grids. It is also an ideal choice for bay control applications, with features including 12 breaker control elements, a large color graphic display that supports configurable single-line diagrams, an integrated annunciator panel and 20 user-configurable virtual pushbuttons.