Overview
The Turck U2159 RK 4T-6 is a dependable actuator and sensor cable assembly designed for factory and process automation applications. This 6-meter cordset features an M12 female straight connector with 3-pin (A-code) configuration, delivering robust connectivity for sensors, actuators, and field devices across industrial control systems.
Key Features
- M12 female straight connector (A-code, 3-pin configuration)
- 6-meter cable length with gray PVC jacket
- Single-ended design with plastic TPU connector body and nickel-plated brass coupling nut
- Sunlight resistant and oil resistant cable construction
- Cold bend rated to −40°C for reliable low-temperature operation
- Flame-rated per UL 1685 FT4, UL 1061, and CSA FT4 standards
- 3×22 AWG instrumentation tray cable for signal applications
Technical Specifications
| Label | Value |
| Part Number | U2159 |
| Manufacturer | Turck |
| Connector Type | M12 Female Straight (A-code) |
| Pin Configuration | 3-pin (4 contacts total) |
| Cable Length | 6.0 meters |
| Wire Gauge | 3×22 AWG |
| Cable Diameter | 5.13 mm |
| Voltage Rating | 250 V |
| Current Rating | 4 A |
| Cable Jacket | PVC, Gray |
| Coupling Nut | Brass (CuZn), Nickel-plated |
| Connector Seal | O-ring, FKM/FPM |
| Operating Temperature | −40°C to +80°C |
| Tightening Torque | 0.8 – 1.0 Nm |
| Certifications | UL 1685 FT4, UL 1061, CSA FT4, UL 2238, CSA C22.2 |
Typical Applications
- Sensor and actuator signal connectivity in manufacturing automation
- PLC and controller I/O device connections
- Industrial control cabinet wiring and field device integration
- Machinery control systems requiring reliable M12 connectivity
- Factory automation and process control installations
Compatibility & Replacements
Compatible With
- Turck M12 sensor and actuator hubs
- Industrial control systems using M12 connectors
- Turck signal modules and interface technology products
- Standard M12 A-code receptacles and field devices
Replaces / Drop-In Replacement For
- Turck RK 4T-6/S90 (variant with S90 connector option)
- Turck RK 4T-6-RS 4T (extension cable variant, part U2159-30)
- Other Turck RK series 4-pin M12 cordsets of equivalent length and pin configuration
Works With
- M12 A-code sensor connectors and actuator hubs
- Industrial Ethernet and fieldbus networks requiring M12 cabling
- Turck M12 junction boxes, splitters, and signal conditioners
- Any standard M12 female straight connector ecosystem






















