Breaking capacity is the core safety parameter of industrial fuses, which refers to the maximum short-circuit current that a fuse can safely cut off at rated voltage. Once exceeding the standard breaking capacity, the fuse cannot break the fault current normally, which will cause serious hidden dangers such as wire burning and equipment damage.
At present, the most common breaking capacity specifications in the market are 10kA and 20kA, which are suitable for different industrial scene environments.
10kA breaking capacity fuse is the mainstream general-purpose model in the industry. It has stable performance and cost advantages, and can meet the short-circuit protection needs of most conventional power distribution cabinets, ordinary mechanical equipment, UPS power supply and medium and low power electrical equipment. It is the most widely used fuse specification in daily industrial matching.
20kA high breaking capacity fuse belongs to high-standard industrial grade product. It adopts better internal melting material and structural design, which can withstand stronger instantaneous current impact. It is mainly used in high-risk and high-power scenes such as new energy energy storage system, high-power inverter equipment, industrial main line power supply and large battery pack protection.
In actual use, there is no absolute distinction between good and bad 10kA and 20kA. The most correct way is to select according to the actual short-circuit current of the installation site.
In terms of production standards, both specifications of EssFuse fuses strictly comply with UL248 test standards, with clear parameter identification, no virtual standard phenomenon, and stable and consistent protection performance in mass use.
Many buyers easily ignore the breaking capacity parameter when purchasing fuses, and only pay attention to the current and voltage, which is very easy to cause hidden safety troubles in the later stage of equipment operation.
FAQ
1: Can 10kA fuse be used in energy storage equipment?
1: It is not recommended. Energy storage instantaneous current is large, and 20kA high breaking capacity fuse is more secure.
2: Will high breaking capacity affect normal power supply?
2: No, breaking capacity only takes effect when short circuit occurs, and will not interfere with normal current transmission.
3: Are EssFuse breaking capacity parameters tested in accordance with UL standards?
3: All products pass UL standard short circuit breaking test, and the parameters are true and effective.
Learn more about fuse performance parameters and model classification at essfuse.com.
semiconductor fuse https://essfuse.com/product-category/north-american-semiconductor-fuse/