Allen-Bradley 440R-M23084 SER.B Safety Relay 24VDC, 250VAC 6A 24VDC 3A

Compact Guardmaster safety relay designed for monitoring safety devices with delayed safety outputs. Provides reliable timing control, removable terminals, and DIN‑rail mounting for industrial safety applications. Technical Specifications Manufacturer: Allen‑Bradley (Rockwell Automation) Series: Guardmaster Safety Relay Model / Catalog Number: 440R‑M23084, Series B Internal Reference: MSR138.1DP (visible on module label) Supply Voltage: 24 V DC (DC1) Auxiliary Supply: 24 V AC/DC 50/60 Hz, 4 W Output Ratings: AC‑15 250 V 3 A; DC‑13 24 V 3 A Function Type: Single‑function safety relay Output Configuration: 2 NO safety outputs / 1 NC auxiliary output Output Type: Delayed outputs Time Delay Range: Adjustable 0.15 – 3 seconds Terminals: Removable terminal blocks Mounting: DIN‑rail mount Environmental Rating: Max ambient temperature 55 °C Certifications (visible on label): CE, UL, c‑UL, TÜV, FS (Functional Safety) Country of Manufacture: Made in Germany Please review pictures carefully and let us know if you have any questions!