Allen-Bradley 852S-NSC Solid State Timer Delay

The Allen-Bradley 852S-NSC Solid State Timer Delay is a compact, self-contained timing relay designed to mount on Type N relay assemblies to deliver precise ON-delay timing in industrial control circuits. It provides a 1 to 60 second timing window that is adjusted with a built-in potentiometer, and it operates from 110/120 VAC with a 50/60 Hz supply, supporting a maximum of 300 VAC line voltage for added versatility in mixed-control environments. The NSC variant includes fast reset behavior—approximately 100 ms ON-delay reset and 20 ms OFF-delay reset—facilitating tight sequencing and rapid recovery after input changes. Typical applications span sequencing and interlocking in control panels, motor start-up delays, valve actuation, and CNC or automation timing, offering a solid-state alternative to mechanical timers with no moving parts and predictable, repeatable delays.