2863083 IB IL AO 2/SF-PAC PHOENIX

Phoenix Contact Filter Modules are compact, DIN-rail-mounted interference suppression devices designed to decouple electromagnetic noise between power distribution networks and sensitive industrial electronics. Featuring a unified terminal architecture, they accommodate standard push-in or screw connection wiring for fast installation into control panels. The module housings are molded from durable, flame-retardant polyamide or aluminum enclosures, ensuring high mechanical strength and thermal stability. Depending on the specific model, these modules integrate dual-stage low-pass filtering alongside high-capacity varistors and gas-filled surge arresters, providing two-in-one protection that eliminates both continuous high-frequency interference and dangerous transient overvoltages.

Product Parameters

• Rated Operating Voltage: Standard single-phase AC models support 120 V AC to 240 V AC nominal system voltages, while specialized DC models support 24 V DC systems.

• Maximum Continuous Operating Voltage: Ranges from 150 V AC up to 264 V AC depending on system classification and regional standards.

• Nominal Load Current: Product ranges cover small control signals from 1 A up to heavy-duty power lines rated at 20 A continuous current.

• Operating Frequency: Compatible with standard 50 Hz and 60 Hz industrial power frequencies.

• Attenuation Performance: Symmetric (differential mode) insertion loss exceeds 20 dB to 65 dB at 1 MHz; asymmetric (common mode) insertion loss exceeds 30 dB to 45 dB at 1 MHz.

• Surge Protection Capability: Integrated surge protective components deliver a nominal discharge current rating of up to 3 kA to 5 kA (8/20 µs combination wave).

• Connection Technology: Screw terminal blocks or Push-In connection technology supporting conductor cross-sections from 0.2 mm² to 6 mm² (AWG 24 to 10).

• Mounting Type: Standard 35 mm DIN rail mounting according to EN 60715 (NS 35/7.5 and NS 35/15).

• Enclosure Rating: IP20 ingress protection rating in accordance with IEC 60529.

• Ambient Operating Temperature: Operational temperature tolerance spanning from -25°C to +70°C or higher depending on current derating specifications.

Product Advantages

Phoenix Contact filter modules offer combined filter and surge protective functions within a single housing, eliminating the requirement for separate filter and surge suppressor units, which significantly saves cabinet space and reduces total system hardware costs.

The current-compensated inductance topology provides effective attenuation of symmetrical and asymmetrical high-frequency interference without introducing significant line voltage drops or power loss.

Their universal DIN-rail footprint enables rapid snap-on mounting into existing panel layouts, simplifying both initial build and field retrofitting operations.

Integrated optical diagnostic windows and remote signal fault contacts provide instant visual and automated status feedback to master controllers, allowing maintenance teams to identify degraded surge elements before downtime occurs.

The robust industrial design complies with international safety standards including IEC/EN 61643-11, UL 1449, and UL 1283, ensuring reliable operation under harsh electromagnetic conditions.

Important Considerations and Precautions

Always ensure the total connected load current does not exceed the nominal current rating of the specific filter module to prevent thermal overload and nuisance tripping of upstream protection devices.

A low-impedance ground connection to the functional earth DIN rail or PE busbar must be established using the shortest wire path possible to maintain optimal high-frequency noise attenuation and surge discharge path efficacy.

Verify that the maximum continuous operating voltage of the chosen filter module is strictly higher than the worst-case line voltage fluctuations of the local power grid.

Filter modules must be installed upstream of sensitive electronic loads, placing them as close to the entrance of the control cabinet or protected device as possible to prevent noise coupling on internal wiring runs.

Never perform high-voltage insulation or Megger testing on the panel wiring while the filter module is connected, as the integrated varistors and capacitors may clamp the test voltage and suffer permanent damage.

Disconnect the primary power source before performing any installation, wiring modifications, or maintenance work on the module to eliminate electrical shock hazards.

Product Applications

Phoenix Contact Filter Modules are implemented across wide-ranging industrial sectors to protect automated electronics from line noise and transient overvoltages.

• Programmable Logic Controllers and I/O Protection: Cleaning incoming supply voltage for PLCs, remote I/O drops, and human-machine interfaces (HMIs) susceptible to logic corruption caused by switching transients.

• Variable Frequency Drive Installations: Suppressing high-frequency harmonics and noise generated by PWM switching in AC drives to prevent interference with adjacent sensor signals and fieldbus networks.

• Precision Process Instrumentation: Filtering power feeds for mass flow controllers, temperature transmitters, and sensitive weighing systems where line noise causes signal drift.

• Robotics and Machine Tool Controllers: Protecting sensitive motion controller boards, encoder feedback loops, and CNC units from inductive kickback generated by heavy motors and contactors.

• Renewable Energy and Power Generation: Suppressing grid-side electromagnetic interference in inverter control cabinets for photovoltaic plants and wind turbine auxiliary systems.