Allen-Bradley 849-ZOD327 Pneumatic Timing Relay

Allen-Bradley 849-ZOD327 Pneumatic Timing Relay is a legacy on-delay timer from the 849 family that uses a pneumatic timing mechanism to delay energizing a load after a control input. It is designed for industrial control panels and accepts a 110/120 VAC coil at 50/60 Hz. The timing interval is set by the pneumatic timing assembly, enabling sequencing of loads such as motors, valves, or actuators in applications like conveyors, presses, and packaging lines. This model, 849-ZOD327, was discontinued by Allen-Bradley on March 31, 2010, but used units and remaining stock remain available through surplus and distributor channels. Reflecting the standard characteristics of 849-series pneumatic timing relays, it provides reliable timing in environments where electronic timers are impractical.