Allen-Bradley 849-ZOD32 Pneumatic Time Delay Relay

Allen-Bradley 849-ZOD32 is a pneumatic time-delay relay in the 849 family, an on-delay timing device designed to introduce a controlled delay before its output contacts change state. The model is specified for 120V AC operation (50/60 Hz) and uses a pneumatic timing element—typically a synthetic rubber bellows—to generate the delay, a hallmark of Rockwell’s 849-series relays. As an on-delay relay with a maintained-contact timing unit, it provides a repeatable delay between input signal and output activation, making it suitable for sequencing and interlock functions in pneumatic control circuits. Verified distributor listings identify 849-ZOD32 as the 120V version of this variant, and the product is documented in Rockwell Automation literature among the pneumatic timing relays in Bulletin 849, ensuring the correct family fit for legacy Allen-Bradley control systems.