Allen-Bradley 849A-ZAB24 Pneumatic Timing Relay

Allen-Bradley 849A-ZAB24 Pneumatic Timing Relay is a rugged, industrial time-delay device that uses a pneumatic timing mechanism to generate controlled delays in control circuits. As a member of the 849 family, it relies on a pneumatic bellows timing element to set and deliver delay intervals, offering reliable timing performance in harsh environments common to manufacturing floors. This variant supports standard Allen-Bradley automation topologies for sequencing and interlocks, making it suitable for applications such as valve actuation and actuator sequencing, and for introducing deliberate delays in pneumatic control systems. Bulletin 849 timing relays are documented as pneumatic relays with bellows-based timing, designed to provide precise, repeatable delays in industrial controls.