Introducing the RP285 Single-Phase PLC Filter

New EMI Filter Designed to Protect Digital Data Transmission and Improve System Reliability Across Industrial, Automation, and Utility Applications

Astrodyne TDI is proud to announce the release of the RP285 Single-Phase PLC Filters, a brand-new addition to our industry-leading line of EMI and RFI filtering solutions. Engineered specifically for power line carrier (PLC) communication systems, the RP285 filters prevent disruptive noise from corrupting digital signals - ensuring accurate, secure, and uninterrupted communication/data transfer between industrial equipment.

Power line carrier communication allows data to travel directly over power line conductors between two process or assembly stations. However, without proper filtering, the communication signals can travel past the modems at either end and infiltrate nearby electronic systems, acting as noise, thereby impacting equipment performance and disrupting the process.

The RP285 filter is placed directly after PLC modems to create a clean, isolated transmission path, ensuring that signals stay contained between communicating modems. By blocking both inbound electrical noise and outbound communication signals, the filter protects sensitive electronics while also ensuring clean transmission and receiving of PLC data - maintaining system reliability and operational continuity.

Furthermore, these filters provide a very high differential mode insertion loss performance, making them highly effective for any application requiring differential mode insertion loss from 10kHz to high MHz frequencies.

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Key Features & Benefits

• Rated currents: 20A, 35A, 65A, 100A, and 200A

• Dual-stage line filter for enhanced attenuation

• Flexible connectivity options:
  • Standard: Connectors (-C)
  • Options: Studs (-S), Wire leads (-W), and Quick Disconnects (-QD, 20A only)

• CE Marked
• Other Agency approvals (under testing): UL60939-3, CSA C22.2, EN60939-3

• Excellent common-mode and differential-mode insertion loss

• Exceptionally low-frequency differential-mode performance, beneficial for a wide range of industrial and sensitive military applications

• Operating temperature: –40°C to 100°C

• Ambient temperature: 50°C

• Climatic category: 25/100/21

• Leakage current:
  • 7.40 mA @ 250 VAC, 50 Hz
  • 4.25 mA @ 120 VAC, 60 Hz

• Hipot rating: 2700 VDC line-to-ground

The RP285 is an ideal filtering solution for systems that rely on dependable power line communication, including:

• Manufacturing and process control

• Automated industrial systems (assembly lines, packaging, water treatment, etc.)

• Traffic light signaling networks

• Elevators and lift systems

• Food service equipment

• Energy and utility management

• Home and building automation 

Setting a New Standard for Noise Isolation in PLC Systems

With PLC-based automation becoming increasingly sophisticated, the need for robust noise control continues to grow. The RP285 delivers the isolation required to keep digital communications precise and protected—allowing OEMs and system integrators to build smarter, safer, and more efficient equipment.

The RP285 Single-Phase PLC Filters are available now, with customizable connection options to support a wide range of system designs. To learn more about the RP285 or request technical support, visit the Astrodyne TDI website or contact our application team. For any modification and customization requests, please contact our product and engineering teams