Allen-Bradley 849-N4 Auxiliary Contact For Pneumatic Timing Relay

Allen-Bradley 849‑N4 Auxiliary Contact for Pneumatic Timing Relay is a 4‑contact auxiliary block that mounts to the Bulletin 849 pneumatic timing relay, providing two normally open (NO) and two normally closed (NC) contacts to extend the relay’s signaling and control capabilities. Designed for on‑delay operation, the N4 accessory lets external circuits respond after the programmed delay while the main timing relay remains energized, enabling synchronized control of downstream devices. As part of the older Bulletin 849 family, the 849‑N4 is specifically described as auxiliary contact hardware for pneumatic timing relays and is documented by Rockwell Automation in legacy timing‑relay literature; Allen-Bradley discontinued the 849 line on March 13, 2010. Even after discontinuation, distributors continue to offer the 849‑N4 as a genuine replacement part for retrofits and repairs on legacy automation systems that rely on pneumatic timing relays, maintaining compatibility with existing 849 timing relays and their automation ecosystems.