Swe-Check: The Fuse Warehouse - Circuit Protection Specialists.
Phone: +61 3 9521 6133 Fax: +61 3 9521 6177 Web: www.swe-check.com.au
Markings on Electronic Cartridge Fuses
Table 1. Fuse Element Speed Markings
|Marking||Fuse Element Speed|
|FF||Very Fast Acting (Flink Flink)|
|F||Fast Acting (Flink)|
|M||Medium Acting (Mitteltrage)|
|T||Slow Acting (Trage)|
|TT||Very Slow Acting (Trage Trage)|
Table 2. Fuse Breaking Capacity Markings
|Marking||Fuse Breaking Capacity|
|H||High Breaking Capacity|
|L||Low Breaking Capacity|
Note: Many small cartridge fuses will have additional markings stamped on the end caps.
These are usually either; a series number, a part number, or product approval markings (refer table 3 below).
If you are unable to identify the fuse, please contact us.
Table 3. Quality & Approval Markings on the fuse cap
|Canadian Standards Assocation (CSA)|
|Equipment complies with Council of the European Union (CE)|
|International Electrotechnical Commission (IEC)|
|Technischer Uberwachungs-Verien (Germany - TUV)|
|Underwriters Laboratories (Listed - USA)|
|etc.||View more product approval markings|
Markings on Industrial Fuses
As these fuses are larger in size, there is usually a lot more information printed on the fuse body.
This information that is likely to be found on the fuse is summarised in the following table.
Common Markings on Industrial Fuses
|Fuse Marking||Example||More Information|
|Manufacturer / Brand:||Bussmann||View all the brands we sell|
|Part number / Series:||NSD20||Search for fuses using part number|
|Ampere Rating:||20 A||Search for fuses by ampere rating|
|Interrupting Rating:||80 kA||Explanation of Interrupting Rating|
|Voltage:||550 Vac||Search for fuses by voltage|
|Element Speed:||gG/gL||Learn about fuse speed markings|
|Approvals or Standards:||BS88||View all approval markings|
|Fuse Dimensions (Cartridge fuses):||10 x 38 (in mm)||Search for fuses using dimensions|
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