Eaton Bussmann FRN-R-125 Low Voltage Fuse

Eaton Bussmann FRN-R-125 - Low Voltage Fuse

Eaton Bussmann series FRN-R fuse, 125 A, Dual, Class RK5, Non-indicating, Blade end x blade end, 10 sec at 500%, 20 kAIC at 125 Vdc|200 kAIC at 250 V, Standard, 250 V, 125 Vdc

The Eaton Bussmann FRN-R-125 is a low voltage fuse that belongs to the FRN-R series and is designed for specific electrical protection needs. Here are the main features and parameters of this fuse:

1. Rated current: 125 A. This means that the fuse is designed to withstand a maximum current of 125 amperes under normal operating conditions.
2. Type: Dual, which means that the fuse contains two independent fuse elements inside, which are usually used to provide additional protection or meet specific circuit needs.
3. Fusing characteristics: Class RK5. This refers to the fuse's melting time-current characteristic classification. RK5 class fuses have a specific melting time curve under overload current to ensure that the circuit is disconnected in time under set conditions to prevent equipment damage or fire.
4. Indication function: Non-indicating. This means that when the fuse is blown, it will not provide any visual or mechanical indication, and the user needs to confirm whether the fuse is blown through other means (such as circuit testing).
5. Terminal type: Blade end x blade end. This design allows the fuse to be easily inserted into the corresponding fuse holder and achieve electrical connection through blade-type contact.
6. Fusing time: At 500% of the rated current, the fusing time is 10 seconds. This means that if the current reaches 5 times the rated current of the fuse (i.e. 625 amperes), the fuse will melt in about 10 seconds.
7. Short-circuit current capacity:At 125 V direct current (Vdc), the short-circuit current capacity is 20 kAIC (kiloampere interrupting capacity).
   At 250 V AC or DC, the short-circuit current capacity is increased to 200 kAIC. This indicates the maximum current impact that the fuse can withstand under short-circuit conditions, ensuring that the circuit can be reliably disconnected even in extreme cases.
8. Voltage level: Standard type, suitable for 250 V AC/DC voltage systems, and it is also specifically pointed out that it is suitable for 125 V DC voltage systems.
9. Application: This type of fuse is generally used for low-voltage circuit protection that requires high reliability and high short-circuit current capacity, such as industrial control systems, power equipment, transportation systems and other fields.

In summary, Eaton Bussmann FRN-R-125 is a low-voltage fuse with excellent performance and wide adaptability, which can play an important role in various electrical protection needs.