Phoenix Contact PLC-RSC-24DC/21-21 Relay Module, 24V DC, 2 PDT, 6A

The Phoenix Contact PLC-RSC-24DC/21-21 is a professional-grade relay module engineered for reliable signal switching and isolation within industrial automation and control systems. This interface module combines a base terminal block with a pluggable miniature power relay, offering a robust solution for managing electrical loads in modern control cabinets. Its compact design and high-quality construction ensure consistent performance in demanding environments.

Advantages

This relay module provides significant space savings due to its narrow 14 mm profile, making it ideal for high-density control cabinet layouts. The integrated input and interference suppression circuitry enhances operational reliability by protecting sensitive components. Furthermore, the module supports efficient system cabling through V8 adapters and features functional plug-in bridges for simplified installation. The sealed relay design ensures long-term durability, while the secure separation between the coil and contacts meets stringent safety standards.

Suitable for

• Industrial automation and control systems
• Signal isolation between control and load circuits
• Switching electrical loads in control cabinets
• Interface applications requiring 24V DC control signals

This module may not be suitable for applications requiring switching currents exceeding 6A or for environments where the ambient conditions exceed the IP20 protection rating. It is also not intended for high-voltage power distribution systems beyond its 250V nominal rating.

Key specifications

• Coil voltage: 24V DC
• Contact configuration: 2 PDT (double-pole double-throw)
• Maximum switching current: 6A
• Nominal voltage: 250V
• Connection type: Screw connection
• Wire gauge range: 26 - 14 AWG (0.14 mm² to 2.5 mm²)
• Dimensions: 14 mm width, 80 mm height, 94 mm depth
• Protection rating: IP20

The module is designed for mounting on standard NS 35/7,5 DIN rails. Installation involves securing the base terminal block onto the rail and inserting the miniature relay into the designated slot. Wiring is performed using the integrated screw terminals, ensuring a secure connection for conductors ranging from 0.14 mm² to 2.5 mm². Ensure the control voltage matches the 24V DC specification before energizing the circuit.

What to consider before purchase

• Verify that the 24V DC control signal is compatible with your PLC or controller output.
• Ensure the 6A switching capacity is sufficient for your specific load requirements.
• Confirm that the physical width of 14 mm fits within your existing DIN rail configuration.
• Check that the operating environment is suitable for IP20-rated equipment.

For optimal performance and longevity, ensure that all screw terminals are tightened to the recommended torque and that the module is installed in a clean, dry environment protected from excessive vibration and extreme temperatures.