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Schurter has introduced the UMT-H, a time-lag SMD fuse for applications with large short-circuit currents. The letter ‘H’ in the product name stands for its high breaking capacity of 1,500A.

With its six rated currents from 160mA to 2A and rated voltages of up to 277VAC and 250VDC, the square-shaped UMT-H offers a compact alternative to cylindrical fuses.

If all electrical specifications are equal, the UMT-H offers several advantages compared with cylindrical fuses, especially during assembly. For example, the quadratic design prevents devices from rolling away during placement or reflow soldering. Thanks to the position of the device markings, key information about the fuse can be seen immediately.

The UMT-H is suitable for applications including the primary protection of power-supply units. A further application area is in industrial electronics. The devices are also useful in applications that involve explosion protection (IEC 60079-11) and for lighting applications in the US market.

Key features and benefits

  • High rated voltages of up to 277VAC/250VDC
  • High breaking capacity of 1,500A at rated voltage
  • Time-lag characteristics according to UL 248-14
  • Compact, square design measuring 5.3 x 16mm
  • No rolling away during PCB assembly and soldering
  • Safe interruption at line voltage
  • Halogen free and RoHS compliant

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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