UMI-S0031 Unitronics UMI-B1 0.75-2.2kW 3P IN FLT C3

Why Choose the Unitronics UMI-S0031 EMC Input Filter?

The Unitronics UMI-S0031 is a high-performance EMC C3 input filter designed to reduce electromagnetic interference generated by variable frequency drives in industrial automation systems. Installed between the mains power supply and the inverter, it suppresses conducted electrical noise and helps achieve compliance with industrial EMC requirements.

Designed specifically for use with compatible Unitronics B1 series variable frequency drives, the UMI-S0031 enhances system reliability while protecting nearby control equipment from inverter-generated interference. Its compact construction and industrial-grade design make it ideal for integration into machine control panels and automation cabinets.

With a 7 A current rating and support for 0.75 kW to 2.2 kW drive applications, the UMI-S0031 is suitable for a wide range of motor control systems including conveyors, pumps, fans and manufacturing equipment. The filter assists engineers and machine builders in maintaining stable operation while reducing electromagnetic emissions.

Key Advantages

• Industrial EMC C3 input filter for variable frequency drives.
• Reduces conducted electromagnetic interference (EMI).
• 7 A current rating for small and medium drive installations.
• Compatible with Unitronics B1 series inverters.
• Supports three-phase 380 V AC systems.
• Helps installations meet IEC/EN 61800-3 EMC requirements.
• Compact design suitable for industrial control panels.

Key Features

• Unitronics UMI-S0 series power filter.
• C3 EMC input filter classification.
• Three-phase 380 V AC operation.
• 7 A rated current.
• Suitable for 0.75 kW to 2.2 kW drives.
• Designed for Unitronics B1 series VFDs.
• Wall and panel mounting capability.
• Metal housing for industrial applications.
• IP20 protection rating.

Technical Specifications

• Manufacturer: Unitronics
• Series: UMI-S0 Power Filters
• Model: UMI-S0031
• Product type: EMC input filter
• Filter class: C3
• Supply voltage: 380 V AC
• Network type: Three-phase (3AC)
• Rated current: 7 A
• Suitable drive power: 0.75 kW to 2.2 kW
• Suitable motor power: 1 HP to 3 HP
• Protection rating: IP20
• Mounting type: Wall / panel mounting
• Operating temperature: -10°C to +50°C
• Standards: IEC/EN 61800-3

Reliable EMC Protection for Industrial Drives

Variable frequency drives generate high-frequency switching signals that can create unwanted electrical noise within automation systems. The Unitronics UMI-S0031 reduces these emissions before they enter the power network, helping improve system stability and reduce interference with PLCs, sensors, communication equipment and other sensitive electronics.

By incorporating a dedicated EMC input filter into the drive installation, machine builders and panel manufacturers can improve electromagnetic compatibility and support compliance with industrial EMC regulations while maintaining reliable inverter performance.

Typical Applications

• Industrial variable frequency drive systems.
• Conveyor and material handling equipment.
• Pumps and fan control applications.
• Packaging and production machinery.
• Manufacturing automation systems.
• Machine builder and OEM control panels.
• Industrial installations requiring EMC compliance.

Trusted by Automation Engineers

Unitronics EMC filters are widely used in industrial automation systems to improve electromagnetic compatibility, protect sensitive equipment and support reliable variable frequency drive operation.