Product Overview
The Lenze K-D M12A-4P-20m-PVC is a pre-assembled connection cable featuring an M12 axial connector with 4 pins and a 20-meter cable length. Its type code breaks down as follows: K-D indicates a connection cable with connector, M12A denotes the M12 connector with axial cable outlet, -4P specifies 4 pins, -20m confirms the 20-meter length, and -PVC identifies the PVC cable sheath. This cable is designed to transmit power and signals reliably in industrial settings, supporting operating voltages up to 250 VAC/DC for 3/4-pin configurations and up to 125 VAC/DC for 5-pin versions. Each contact can carry up to 4 A, making it suitable for a wide range of sensors, actuators, and field devices.
Technical Specifications Breakdown
Key parameters for the K-D M12A-4P-20m-PVC are listed below for quick reference:
| Feature | Specification |
|---|---|
| Rated Voltage (3/4-pin) | ≤250 VAC/DC |
| Rated Voltage (5-pin) | ≤125 VAC/DC |
| Current per Contact | ≤4 A |
| Insulation Grade | Category I acc. to IEC 60664-1 |
| Connector Type | M12, axial (A-type) |
| Number of Pins | 4 |
| Cable Length | 20 m |
| Cable Sheath Material | PVC |
| Operating Temperature (fixed wiring) | -30°C to +70°C |
| Operating Temperature (flexible wiring) | -5°C to +70°C |

Industry Applications
1. Factory Automation – Sensor/Actuator Wiring
In assembly lines and packaging machinery, the K-D M12A-4P-20m-PVC connects proximity sensors, photoelectric sensors, and solenoid valves to control cabinets. Its 20-meter length provides ample reach for distributed I/O points, while the 4-pin configuration supports both power and signal lines. The axial connector design simplifies routing in tight cable trays.
2. Material Handling – Conveyor Systems
Conveyor systems often experience vibration and cable flexing. The cable's flexible wiring temperature range of -5°C to +70°C allows operation in moderately cold environments, while the PVC sheath resists abrasion and many industrial oils. The robust screw-fitting connector with diecast zinc nickel-plated housing ensures a secure, vibration-resistant connection.
3. Process Control – Field Device Interconnection
In process industries, the cable links field transmitters and valve positioners to marshalling cabinets. The insulation grade Category I per IEC 60664-1 ensures basic protection against overvoltage, making it suitable for control circuits. The 4 A contact rating accommodates typical 24 VDC loads with ample margin.
Installation & Setup Guidance
When installing the K-D M12A-4P-20m-PVC, follow these practical steps:
- Torque: Tighten the coupling nut to the recommended torque of 0.6 Nm. The self-locking feature prevents loosening due to vibration.
- Bending Radius: For fixed wiring, maintain a bending radius of at least 10 times the sheath diameter. For flexible wiring, use a larger radius to prevent stress on conductors.
- Cable Routing: Avoid sharp edges and pinch points. Use cable glands or clamps to secure the cable and prevent strain on the connector.
- Environmental Limits: The cable is rated for operating temperatures from -30°C to +70°C (fixed) and -5°C to +70°C (flexible). Do not exceed these limits.
Maintenance & Reliability
Regular inspection of connection cables is essential to prevent unexpected failures. Check the connector for signs of corrosion, damage, or loose fit. Verify that the cable sheath is intact and free of cuts or abrasions. In environments with high humidity or chemical exposure, inspect more frequently. The PVC sheath provides good resistance to many industrial chemicals, but periodic cleaning with a mild detergent is recommended. Always disconnect power before inspecting or handling connectors.
The Challenge: Reliable Signal Integrity in Harsh Industrial Environments
Industrial automation systems depend on secure, interference-free connections between sensors, actuators, and controllers. A single faulty cable can cause intermittent signal loss, machine downtime, or even safety incidents. Engineers often face the dilemma of choosing a cable that balances flexibility, durability, and electrical performance. The Lenze K-D M12A-4P-20m-PVC connection cable addresses these demands with a robust design engineered for fixed and flexible wiring applications.

Compatibility & Integration
The K-D M12A-4P-20m-PVC is designed for use with devices that have M12 4-pin female connectors. It is compatible with a wide range of Lenze drives and automation components, as well as third-party sensors and actuators that follow industry-standard M12 wiring. The 4-pin configuration typically carries power (pins 1 and 3) and signal (pins 2 and 4), but always verify the pinout of your specific device before connection.
Selection Guide & Purchasing Advice
When selecting a connection cable, consider the required length, pin count, and environmental conditions. The K-D M12A-4P-20m-PVC offers a balanced combination of length, electrical rating, and mechanical robustness. For applications requiring longer lengths or different pin configurations, Lenze offers other variants in the K-D series. To ensure availability and current lifecycle status, contact AutoDCSTech – your trusted industrial automation parts supplier. AutoDCSTech provides genuine Lenze components and expert support to help you find the right part for your system.
Troubleshooting & Common Issues
- Intermittent Signal: Check the connector for loose mating or damaged pins. Ensure the coupling nut is tightened to 0.6 Nm.
- No Communication: Verify that the cable is not broken by testing continuity with a multimeter. Inspect for cuts or crushing.
- Overheating: If the cable feels hot, check for overcurrent conditions. The cable is rated for 4 A per contact – do not exceed this.
- Moisture Ingress: If the connector is exposed to water, ensure the sealing is intact. The screw-fitting design provides a secure seal, but damaged seals should be replaced.
For persistent issues, consult the device manual or contact AutoDCSTech for technical assistance.
Availability & Condition at AutoDCSTech
| Part Number | K-D M12A-4P-20m-PVC |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | Germany |
