FTT 5×20 Miniature Fuse, 5 x 20 mm; Super-Time-Lag TT; 250 VAC

Category: Circuit Protection Devices, Electronics, Schurter Inc

The FTT 5×20 is a Super-Time-Lag TT miniature fuse from SCHURTER, measuring 5 x 20 mm and rated for 250 VAC. It is designed with a low breaking capacity and housed in a glass tube, featuring nickel-plated copper alloy endcaps. This fuse is specifically formatted for use with a corresponding fuse holder or clip.

Technical Data

The FTT 5×20 supports a current rating from 0.63 to 4 Amperes, with a breaking capacity of 35 Amperes. A defining characteristic of this fuse is its Super-Time-Lag delay, which allows it to tolerate brief overcurrent conditions without opening immediately, whereas its admissible ambient air temperature range is between -40°C and +85°C. The fuse is categorized under the climatic category 40/085/21 according to IEC standards, which denotes tolerance to certain environmental conditions. Storage conditions are recommended to be between -5°C to 60°C with a maximum relative humidity of 90% RH.

Material Composition

The material making up the fuse tube is glass, which houses the fuse element, while the endcaps are made from a nickel-plated copper alloy, contributing to the lasting electrical and mechanical connection and the overall robustness of the fuse.

Approvals and Compliances

SCHURTER fuses are recognized by independent testing authorities and comply with national and international safety standards. Furthermore, they can meet specific requirements for various industries such as automotive, medical technology, and aerospace, given that individual agreements are made with SCHURTER to cater to particular standards like IATF 16949, ISO 13485, etc.

The FTT 5×20 has received certifications from the VDE with certificate number 40048210 and from UL with file number E41599. These approvals signify the fuse’s compliance with the safety requirements necessary for electronic products. The product standards references include UL 248-14 for Low Voltage Fuses Part 14: Additional Fuses and CSA22.2 No. 248.14 for Low-Voltage Fuses Part 14: Supplemental Fuses.

Product Marking

Each fuse is marked with its rated current, voltage, and time-lag characteristic. The presence of certification marks indicates that the product is approved and safe to use according to the standards addressed on the datasheet.