Allen-Bradley 440R-S13R2 Guardmaster Single Input Safety Relay

The Allen-Bradley 440R-S13R2 Guardmaster is a DIN-rail mounted, 24 VDC single-input safety relay designed to monitor and control safety devices such as emergency stop circuits and safety doors in machine guarding systems. It provides one normally open contact with a maximum switching voltage of 250 VAC, up to 6 A, and a maximum switching power of 1500 VA, with a response time of ≤ 20 ms, all housed in an IP20 enclosure. Operating from -20°C to 55°C and certified CE and UL, it meets Cat. 4, PL e (ISO 13849-1) safety performance and is commonly used in machine guarding, conveyors, and automated equipment; common replacements include Allen-Bradley 440R-S14R2, Siemens 3SK1120-0AA00, and Omron G9SA-301 AC/DC24.