Schneider Electric’s Square D 8501-JCK25 is an off-delay timing relay that plugs into a Square D 8501NR socket, delivering timed control within a compact plug-in package. It provides an adjustable off-delay interval from 1.8 to 180 seconds, allowing the connected load to remain energized for the set period after the control input changes state. As part of the JCK plug-in timer family, the 8501-JCK25 is commonly used in simple automation sequences such as motor starters, conveyors, and sequencing tasks in control panels, where quick field replacement and modular deployment are valued.
