Overview
The Square D 9050JCK12V20 is a general-purpose plug-in timing relay designed for reliable, adjustable on-delay timing in industrial control systems. 9050JCK plug in timers are designed to provide low cost timing in a plug in housing. It supports coil voltages of 120 VAC and 110 VDC and mounts via a plug-in socket for easy installation. This used unit is fully functional and ready to serve motor starters, sequential processes, and automation equipment where cost-effective timing is essential.
Key Features
- DPDT contact configuration rated for 10 amperes resistive at 120 VAC, 240 VAC, and 30 VDC
- Timing range of 0.3 to 30 seconds is easily adjustable with a knob on the top of the timer
- On delay timing mode — when the input voltage is applied, the time delay begins; relay contacts change state after time delay is complete
- Plugs into an 8501NR51 or 8501NR52 relay socket for DIN-rail or panel mounting
- UL listed when the proper 8501NR relay socket is used, UL component recognized and CSA certified
Technical Specifications
- Contact Configuration: DPDT (Double Pole Double Throw)
- Resistive Load Rating (DPDT): 10 amperes at 120 VAC, 240 VAC and 30 VDC; 3 amperes inductive at 120 VAC, 240 VAC and 30 VDC; 1/3 HP on the NC contacts at 120 VAC and 240 VAC; 1/2 HP on the NO contacts at 120 VAC and 240 VAC
- Coil Voltage: 120 VAC / 110 VDC
- Timing Range: 0.3 to 30 seconds
- Timing Mode: On-Delay (adjustable)
- Socket Compatibility: 8501NR51 or 8501NR52
- Mounting: Plug-in socket (DIN rail or panel compatible)
- Certifications: UL listed, UL component recognized, CSA certified
- Frequency: 50–400 Hz
Typical Applications
The 9050JCK12V20 is ideal for motor control, pump start-stop sequencing, process timing delays, conveyor automation, and general industrial relay logic. Its low cost and robust construction make it suitable for:
- Motor soft-start and sequencing
- Dwell time and delay-on-operate functions
- Machine cycle timing
- Pump and fan control circuits
- Panel-mount automation systems
Compatibility & Replacements
Compatible With
- 8501NR51 or 8501NR52 relay socket for 35 mm DIN mounting track or direct panel mount
- Any control system requiring adjustable on-delay 0.3–30 second timing
- Standard motor starters and manual/automatic control circuits
- 120 VAC and 110 VDC control voltage applications
Replaces / Drop-In Replacement For
The 9050JCK12V20 is the standard Type JCK on-delay plug-in timer from Square D. Direct replacements within the 9050 series include other 9050JCK variants with different coil voltages or timing ranges. Verify exact model numbers with your system integrator to ensure socket compatibility.
Works With
- Square D / Schneider Electric 8501 relay socket family
- Standard industrial 120 VAC control circuits
- 24 VDC and 110 VDC logic systems (coil powered)
- General-purpose control relay circuits and PLC I/O modules
- NEMA and IEC control architectures
