Overview
The Square D 9050JCK43V20 /C is a Class 9050 Type JCK plug-in timing relay designed for general-purpose industrial timing and control applications. This on-delay timing relay features a 120VAC/110VDC coil and provides precision timing from 10 to 100 seconds with adjustable knob control. The unit is UL listed, CSA certified, and directly interchangeable with other 8 and 11 pin octal-base timers, making it an economical choice for panel-mount or DIN track installations.
Key Features
- On-delay timing mode with 10–100 second adjustable range
- DPDT contacts (2 normally open, 2 normally closed) rated at 10A
- 120VAC/110VDC coil voltage for standard industrial supply compatibility
- Plug-in design with 11-pin octal base for simple installation and replacement
- Transient-protected circuitry for noise immunity in harsh environments
- UL listed, CSA certified, and RoHS compliant for safety and environmental standards
Technical Specifications
| Model/Part Number | 9050JCK43V20 /C |
| Class/Series | Class 9050 Type JCK |
| Timing Mode | On-Delay |
| Timing Range | 10–100 seconds (adjustable) |
| Coil Voltage | 120VAC / 110VDC |
| Contact Type | DPDT (2 N.O. / 2 N.C.) |
| Contact Rating | 10A resistive @ 120/240VAC, 30VDC; 3A inductive @ 120/240VAC, 30VDC; 1/2 HP (N.O.), 1/3 HP (N.C.) @ 120/240VAC |
| Pin Configuration | 11-Pin Octal Base |
| Operating Temperature | −18 to +150°F (−28 to +65°C) |
| Mounting | Plug-in socket mount (8501NR series socket recommended) |
| Dimensions | 43 mm W × 104 mm D × 61 mm H |
| Certifications | UL Listed, UL Component Recognized, CSA Certified, CE Marked, RoHS Compliant |
Typical Applications
- HVAC and building automation systems requiring delayed relay activation
- Industrial conveyor and material handling equipment startup delays
- Amusement park and ride control systems
- Manufacturing and assembly line sequencing
- Crane and hoist control circuits
- Distribution and process control panel timing logic
Compatibility & Replacements
Compatible With
- Square D 8501NR relay sockets (8501NR51, 8501NR52, 8501NR and similar variants)
- 35 mm DIN 3 track mounting systems (with appropriate socket adapters)
- Standard industrial 120VAC control power systems
- Panel-mount wired control circuits using octal-base timer sockets
- Legacy and modern industrial control panels
Replaces / Drop-In Replacement For
- Most 8 and 11-pin octal-base on-delay timing relays with 10–100 second ranges
- Compatible timing relays from manufacturers offering pin-compatible designs
- Verify with your control drawing or system integrator for specific part numbers
Works With
- Square D/Schneider Electric control system components and panel designs
- Standard hardwired control logic circuits (no software/firmware required)
- Relay-based automation and sequencing systems
- IEC 61810-1 compliant control architectures
