Schneider Electric 9050 JCK21V20 General Purpose Relay

Schneider Electric's Square D 9050JCK21V20 Timing Relay is a plug-in, general-purpose timer in the 9050 JCK family that provides an off-delay control function for automation circuits. It is designed for panel installations and uses an 11-pin tubular plug-in socket for straightforward replacement and wiring in compatible Square D enclosures. The unit switches up to 10 A at 240 VAC and accepts a control coil powered by 120 VAC or 110 VDC, enabling compatibility with common control power rails. Time is user-set via five thumbwheel switches, delivering an adjustable off-delay range of 0.1 to 10 seconds to suit short sequencing needs. The 9050JCK21V20 variant is one of several 9050 JCK configurations, all optimized for compact installation in control panels where a plug-in timer is used to achieve precise timing in sequencing tasks. Typical applications include interlocking, conveyor sequencing, and other control-panel timing tasks where a repeatable delay after loss of input is required to ensure orderly operation of downstream equipment.