All means of protection adopted on design may become futile in cases such as: Errors in assembly work Contamination with a foreign substance Damage to semiconductors by disturbances such as heat or shock Before such accidents affect other chips or equipment, HINODE PROTECT FUSE will safely block off equipment as the last line of protection.
HINODE PROTECT FUSE is a fast-acting fuse that blocks off equipment in a few microseconds even in cases of short-circuit accidents that ordinary fuses (slow-blow fuses) and circuit breakers cannot protect against.
HINODE PROTECT FUSE is widely used for general power electric products (approximately 1kW), including:
Q : Is HINODE PROTECT FUSE easy to break if it is so quick to cut off?
A : No, it’s not. Conversely, around the rated amperage, our fuse is less likely to break than a slow-blow fuse (refer to chart below).
First, consider what you would like to protect with the fuse.
Examples of applying position on the inverter circuit
If you would like to prevent explosion or ignition of chips with fewer fuses:
Select an appropriate fuse taking these factors into consideration.
More Inftormation on selecting fuses
（Selecting fuses PDF Download）
When a short circuit occurs, an overcurrent*1 greatly exceeding the rated amperage flows in a circuit.
This causes abnormal heat generation on the wiring pattern and parts and may lead to an accident such as ignition, fumes, or explosion. When a short-circuit current damages a component, it is generally not easy to locate, so restoration of functionality tends to take a long time.
Our fuses will help minimize such accidents and, in the case of an accident, will help you work efficiently for restoring the functionality*2. The following are applications of our fuses:
Refer to page 30 of PROTECT FUSE USER’S GUIDE.
Fuses need to have two opposing functions: breaking performance (the lower the rated amperage against conduction current, the better) and durability (the higher the rated amperage against conduction current,the better). Select a fuse that strikes a good balance between those two according to your needs.
Do not hesitate to contact our office. The data of each fuse and the guidelines on how to choose them listed in this catalog have margins for simplification. We are ready to provide you with more detailed information.
Also, if you could provide us with details of your situation, we would be delighted to help you determine the best product for your needs.
Refer to each rated voltage shown on the product pages. Select a fuse with a larger rated frequency than the circuit voltage (for DC, voltage after rectification) on the short circuit expected in case of an accident.
Take the following points into consideration:
I’d like to know if the fuse can block off before the object under protection is damaged.
For the area of (1), it appears to be protected by other protection equipment and/or current-limiting functions, and our fuses are often selected emphasizing protecting the area of (2).
Also, even in cases that the shutdown l2t is larger than permissible l2t, our fuses are often used to prevent explosions, ignitions, and secondary damage.
I’d like to know the current value that the fuse cannot block off.
characteristics curve flows, the value is calculated from the fusing l2t value of each fuse.
[Fusing time = fusing l2t value ÷ (short-circuit current value)2]
(The fusing time and electric current are effective for overcurrent only once. Once such an overcurrent flows,
the fuse becomes easy to cut off. For more details, refer to the material about life expectancy).
Consult your agent or our company directly any time. If you already know which fuse to purchase, ask for an estimate from our website (http://www.hinodedenki.co.jp/).
Consult your agent or our company any time.
*Characteristics of each fuse (fusing characteristics, l2t value, etc.) indicated in this catalog are average values and may change according to its condition of use,
its environmental condition, individual variability, and so on. Use sufficient margin when making a selection.
When using for the following equipment or purposes, consult our business desk and finalize specifications for delivery. Safety and security in desigh and use are the user's responsibility.