Overview
The Hirschmann RKU 12-256/5M is a single-ended M23 female cordset designed for industrial control and automation applications. This 5-meter (16.4-foot) cable connects M23 female receptacles to free wire ends, making it ideal for sensor, actuator, and fieldbus module installations in manufacturing and process control systems.
Key Features
- M23 Female Straight Connector — 12-pole configuration for reliable multi-pin connections
- Halogen-Free PUR Jacket — Durable polyurethane sheath rated IP67 for wet and outdoor environments
- Rated 8A @ 240V — Suitable for low-to-medium power control circuits
- Conductor Configuration — 8×0.5mm² + 3×1.0mm² (18 AWG), optimized for mixed signal and power lines
- Temperature Range — Operates safely from -25°C to +100°C (-13°F to 212°F)
- UL Type AWM 21198 — Certified for industrial automation equipment compliance
Technical Specifications
The RKU 12-256/5M delivers the connectivity and durability required in demanding production environments.
- Connector Type (Side 1): M23 Socket, Female Straight
- Number of Poles: 12
- Cable Length: 5 m (16.4 ft)
- Cable Gauge: 18 AWG
- Conductor Cross-Section: 8×0.5mm² + 3×1.0mm²
- Voltage Rating: 240V AC/DC
- Current Rating: 8A
- Jacket Material: PUR (Polyurethane), Halogen-Free
- Jacket Color: Black
- Operating Temperature: -25°C to +100°C
- Protection Rating: IP67
- UL Certification: AWM 21198
- Shielding: Unshielded
- Contact Material: Gold-Plated Copper
Typical Applications
The Hirschmann RKU 12-256/5M is commonly used in:
- Industrial automation control systems and PLC installations
- Sensor and actuator signal connections
- Fieldbus module wiring in harsh factory environments
- Machine tool and robotics connectivity
- Water treatment and process control systems
- Food and beverage manufacturing equipment
Compatibility & Replacements
Compatible With
- M23 socket receptacles and connectors (12-pole female straight)
- Lumberg Automation / Hirschmann M23 Series devices
- Belden industrial automation connector systems
- PLC and fieldbus networks requiring M23 connectivity
Replaces / Drop-In Replacement For
- Older 5-meter M23 12-pole cordsets with equivalent voltage/current ratings
- Generic M23 12-pole cables requiring 8A/240V capacity
Works With
- M23 socket-mount female connectors (12-pole)
- PROFINET and EtherCAT fieldbus systems using M23 breakout cables
- Industrial sensor networks with M23 terminations
















