PLC-RSC-24DC-21-21AU PHOENIX CONTACT Interface Relay

Review PHOENIX CONTACT Plc-rsc-24dc/21-21au Interface Relay

The Phoenix Contact PLC-RSC-24DC/21-21AU is a versatile interface relay designed to provide optimal power and signal conditioning for various automation applications. This relay offers 24 channels, each capable of handling both AC and DC currents, making it an excellent choice for systems requiring flexibility in power sources.

The DC channels can handle a current up to 21 Amperes, while the AC channels can handle up to 16 Amperes at a voltage range of 230V AC, 120V AC, or 115V AC. The relay is designed with a robust construction to withstand harsh industrial environments with a temperature range of -40 C to 85 C.

The PLC-RSC-24DC/21-21AU features a modular design, allowing for easy integration into various control systems. It offers both normally open and normally closed contacts, providing flexibility in wiring configurations. The relay is also equipped with diagnostics functions and status LEDs to help simplify troubleshooting.

The contact voltage is 24V DC, and the coil current is 0.5A for AC channels and 1A for DC channels. The relay is designed with low coil power consumption, making it an energy-efficient choice for your automation needs.

The Phoenix Contact PLC-RSC-24DC/21-21AU is also compatible with various communication protocols, including PROFIBUS DP, PROFIBUS PA, and CANopen, allowing for seamless integration into your system. Its compact size and rugged design make it an ideal choice for applications where reliability and space savings are essential.

In summary, the Phoenix Contact PLC-RSC-24DC/21-21AU is a versatile interface relay that offers 24 channels, each capable of handling both AC and DC currents, with a robust construction and various communication protocols compatibility. Its modular design, easy diagnostics, and energy efficiency make it an excellent choice for industrial automation applications.

The Phoenix Contact PLC-RSC-24DC/21-21AU interface relay is a versatile and feature-rich device designed for use in automation applications. Here are some pros and cons that may help you make an informed decision about purchasing this relay:

1. Wide Input Voltage Range: The PLC-RSC-24DC/21-21AU relay can handle a wide range of input voltages from 12 Vdc to 24 Vdc, making it suitable for use in various industrial applications.

2. High Current Capacity: This relay can handle a maximum current of 21 A, making it ideal for controlling larger loads.

3. Compact Design: The relay is compact in size, which makes it easy to install in confined spaces.

4. Reliable: Phoenix Contact is known for manufacturing high-quality components, and this relay is no exception. It is designed to provide reliable operation in harsh industrial environments.

5. Versatile: The relay can be used in various applications, including process control, machine building, and building automation.

1. Cost: The PLC-RSC-24DC/21-21AU relay is more expensive than some other relays on the market.

2. Complex Configuration: The relay may require some expertise to configure, especially if you are not familiar with Phoenix Contact's RCS programming software.

3. Limited Output Voltage: The relay has a limited output voltage of 24 Vdc, which may not be suitable for all applications.

In conclusion, the Phoenix Contact PLC-RSC-24DC/21-21AU interface relay offers several advantages, including a wide input voltage range, high current capacity, compact design, reliability, and versatility. However, it also has some drawbacks, such as a higher cost and complex configuration. If you require a relay with a wider output voltage range or a simpler configuration, there may be other options on the market that better suit your needs.

Based on the information provided, my recommendation would be to carefully consider the specific requirements of your application and weigh the pros and cons of the PLC-RSC-24DC/21-21AU relay against other options. If the benefits of this relay outweigh the drawbacks for your application, then it may be a worthwhile investment.

Details:

New no box, installed but never used.

specifications genpurrelays:

• brand: Phoenix Contact
• mpn: Plc-rsc-24dc/21-21au

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• started: october 28, 2025
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