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FMBC LL data sheet - .PDF file.

SCHURTER has expanded its FMBC NEO three-phase filter range with the FMBC LL, a low-leakage current series for applications where no high leakage currents are allowed. The FMBC LL series of filters is designed for rated currents between 7A and 180A and is said to be ideal for leakage-current-critical applications such as drive technology and high-power systems, such as machines used in an industrial environment.

Today’s electrical industrial installations are increasingly being fitted with residual current devices (RCD) to ensure efficient personal protection. This is also a requirement in certain countries for three-phase systems — for example, plug-in systems up to 32A.

The RCD limits the current to earth to a maximum of 30mA. This poses a particular problem in drive technology since the frequency inverters that control the engine generate considerable leakage current. Long motor cables further aggravate the problem since they increase the capacity to earth and hence the currents to earth too. The FMBC LL filters help reduce the leakage currents and permits compliance with common EMC standards as an efficient input filter.

Click on the link above to download this data sheet.

Key product features

  • Designed for currents from 7A to 180A at an ambient temperature of 50°C
  • UL approvals for rated voltages of 520VAC
  • Leakage current 7–55 A: <5mA, leakage current 75–180A: <20mA
  • cURus approval: E72928
  • Compact and lightweight
  • Screw connection — other types of connections, including wires or copper bars are possible on request as well as customised modifications to the circuit or housing
  • SCHURTER also offers its own EMC measuring service for an optimum adjustment to the inverter

SCHURTER continues to be a progressive innovator and manufacturer of electronic and electrical components worldwide. Our products ensure safe and clean supply of power, while making equipment easy to use. We offer a broad range of standard products including circuit protection, connectors, switches, EMC products and input systems, as well as electronic manufacturing services. Moreover, SCHURTER is ready to work with our customers to meet their application-specific requirements not covered in our standard range. You can rely on SCHURTER’s global network of companies and partners to guarantee a high level of local service and product delivery.


  • Circuit protection: fuse-Links, fuseholders, varistors, circuit breakers for equipment, voltage selectors
  • Connectors: IEC appliance couplers, appliance inlets, connectors, appliance outlets, plugs, power supply cords, interconnection cords
  • Switches: metal line switches, print-mount and front-panel switches, public transport switches, indicators
  • EMC products: one- and three-phase line filter with and without IEC appliance inlets, sine filters, chokes and pulse transformers
  • Input systems: metal and membrane keypads, touch screens, touch panels, cabinet and housing systems


  • Electronic manufacturing services for the electronic industry
  • Development of customer-specific products
  • Support of pre-compliance measurement for EMC topics

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