Overview
The Square D 9050JCK43V20 is a Class 9050 Type JCK general-purpose timing relay designed for industrial control and commercial automation. Square D 9050JCK timing relays are designed to provide low-cost timing in a plug-in housing. This unit features DPDT contacts rated 10 amperes resistive 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.
Key Features
- Timing range of 0.5 seconds to 999 hours is easily adjustable with thumb wheels on the top of the timer.
- Directly interchangeable with many other 8 and 11 pin octal base timers.
- Plug in timer plugs into an 8501NR61 or 8501NR62 relay socket.
- 9050JCK plug in timers are UL listed when the proper 8501NR relay socket is used, UL component recognized and CSA certified.
- Multiple timing function modes available (on delay, off delay, interval, one shot, repeat cycle)
- DPDT contacts (2 N.O. & 2 N.C.)
Technical Specifications
- Coil Voltage: 120 VAC / 110 VDC
- Contact Type: DPDT (2 N.O. & 2 N.C.)
- Contact Rating (Resistive): 10 amperes at 120 VAC, 240 VAC and 30 VDC
- Contact Rating (Inductive): 3 amperes at 120 VAC, 240 VAC and 30 VDC; 1/3 HP on NC, 1/2 HP on NO
- Timing Range: 0.5 seconds to 999 hours
- Pin Configuration: 11-pin octal base
- Mounting: Plugs into 8501NR61 or 8501NR62 relay socket; sockets can be mounted on 35 mm DIN 3 mounting track or directly to a panel.
- Agency Approvals: UL Listed (with proper socket), UL Component Recognized, CSA, RoHS Compliant
- Operating Temperature: -18°F to 150°F (-25°C to 65°C)
- Accuracy: +/-1% repeat accuracy
Typical Applications
- Disconnecting lighting, air conditioning and appliances
- Material handling and conveyor control
- Process automation and timing control
- HVAC system control
- Industrial machinery start/stop sequences
- Pump and motor control
Compatibility & Replacements
Compatible With
- 8501NR61 and 8501NR62 relay sockets
- 35 mm DIN 3 mounting track systems
- Panel mount installations
- 120VAC/110VDC control circuits at 3A minimum load (inductive)
Replaces / Drop-In Replacement For
- Directly interchangeable with many other 8 and 11 pin octal base timers
- Other Class 9050 JCK Series Type variants with matching voltage and socket compatibility
- Verify specific model compatibility with system integrator before ordering
Works With
- General-purpose industrial control systems
- Motor control centers (MCC)
- Electrical panel and enclosure applications
- Hardwired relay logic circuits
- Timing-dependent automation sequences






