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T9-818 data sheet - .PDF file.

Schurter’s T9 fuse-holder-style circuit breaker series has been expanded to include the T9-818 model for PCB mounting. The new model complements the existing T9 series assortment for panel mounting, providing a complete range of mounting styles equivalent to closed fuseholders.

The T9 series features dimensions comparable to those of traditional fuse holders and is likewise similarly designed for direct placement on circuit boards. 

As with all PCB-mounted components, assembly costs are considerably lower because fewer materials are used and wires are eliminated to fully automate assembly. In addition, the T9-818 is more compact than quick-connect terminal types and thus requires less space. Furthermore, its slim design means the reset button protrudes only minimally from the front panel. Two mounting pins provide additional mechanical support on the circuit board and protect the solder connections from additional pressure when the reset button is activated.

The shape of the T9 circuit breaker is similar to that of a fuse holder and thus is said to offer an excellent alternative to 5×20 fuses and their respective fuse holders, where current surges can lead to premature tripping and ageing over time. In contrast, circuit breakers prevent unnecessary downtime by eliminating the need for changing fuses, as well as the associated risk of inadvertently inserting a fuse with the incorrect current rating, which may lead to equipment damage.

A further advantage of circuit breakers is the reset button, which springs out to indicate when the device trips. Reset is achieved by a simple push of the button. Typical application areas for circuit breakers include power supplies, UPS systems, PDUs, electric tools, industrial applications, medical diagnostic equipment, analysis systems, lighting fixtures, HVAC products and equipment for sports and leisure activities.

Click on the link above to download the T9-818 data sheet.

Key features and specifications

  • Thermal circuit breaker
  • PCB mounting
  • Rated current from 3–15A
  • Compact design
  • UL, VDE and CCC approbations
  • Quick-connect terminal types
  • Reset button

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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