The PILZ 774310 PNOZ X3 Safety Relay is a DIN-rail mounted device for industrial safety control systems that monitors emergency stop circuits and safety devices. It features three normally open safety contacts (3 NO) and one normally closed auxiliary contact (1 NC), with an electromechanical relay output and supply options of 24V AC/DC or 110–240V AC depending on variant, and a response time under 50 ms. This safety relay is rated up to Cat 4 on EN ISO 13849-1, operates in environments from -10°C to +55°C, has IP20 protection, and fits a 45 mm-wide DIN rail mounting with screw terminals. Common replacements include PILZ 750103 PNOZ X2, Siemens 3TK2825, and Schneider Electric XPSAC5121.
