The 4SH8531 is an AC-operated industrial relay from Fuji Electric's "Orange Line" SH Series, featuring a 5-pole configuration with 3 normally open (NO) and 2 normally closed (NC) auxiliary contacts. This relay delivers high contact reliability with bifurcated contacts that accommodate direct input to electronic control circuits, with minimum operational voltage and current of 5V and 3mA DC. The relay is rated for 10A continuous current and supports AC operational currents of 60A make and 6A break at 120V, with mechanical life expectancy of 10 million operations and electrical life of 500,000 operations at AC11 rating. It features IEC Standard terminal numbering, snap-on mounting on 35mm DIN/IEC rails, and conforms to international standards including IEC, NEMA, BS, VDE, with UL, CSA, BV, and Lloyd approvals. The relay is ideal for industrial automation, motor control, and electronic device switching applications requiring high reliability and field flexibility through optional auxiliary contact blocks and coil surge suppression units.