Siemens 6ES5721-0CB60 Plug-in Cable

Product Overview

The Siemens 6ES5721-0CB60 plug-in cable provides a reliable interconnection solution for programmable logic controller (PLC) systems. This shielded connecting cable ensures stable signal transmission between control units and remote I/O modules. Industrial automation environments demand durable cabling, and this model meets those rigorous requirements effectively.

Key Technical Specifications

This plug-in cable features a standard 20‑pin connector on both ends for secure attachment. The cable length measures exactly 5 meters, offering flexibility for cabinet installations. Its overall weight comes in at approximately 0.35 kilograms, which simplifies handling during setup. The conductor material uses high‑strand copper wire to minimize electrical resistance. Additionally, the cable jacket consists of flame‑retardant PVC material for enhanced safety.

Design and Construction

The cable incorporates a braided copper shield that effectively reduces electromagnetic interference. This shielding proves critical in factories with heavy machinery and variable frequency drives. Furthermore, the jacket resists oil, grease, and common industrial solvents. The connector housings feature robust metal shells for repeated mating cycles. Each connector includes strain relief boots to protect the solder points from mechanical stress.

Installation and Compatibility

Users can directly connect this cable to Siemens S5‑series central controllers and expansion racks. The keyed connector design prevents incorrect insertion, thereby saving installation time. Moreover, the cable supports both analog and digital signal transmission without degradation. For longer runs, you may combine this cable with couplers, although we recommend maintaining the total length under 10 meters. The operating temperature range spans from -25°C to +70°C, suiting most indoor industrial sites.

Performance and Reliability

This cable exhibits a characteristic impedance of 120 ohms, matching standard PLC input circuits. The contact resistance stays below 10 milliohms per pin, ensuring low signal loss. Furthermore, the insulation resistance exceeds 100 megohms at 500 V DC, which guarantees excellent isolation. The cable can withstand up to 500 connection cycles before showing wear. Consequently, this model reduces maintenance frequency and downtime in production lines.

Ordering and Logistics

Each package contains one assembled plug-in cable with both connectors pre‑installed. The product ships in a static‑shielded bag to prevent electrostatic damage during transit. Replacement parts or custom lengths are available upon request through authorized distributors. Always verify your system’s connector pinout before ordering to ensure full compatibility.