What does F1 mean on a fuse?
Table of Contents
What does F1 mean on a fuse?
Fuse Specification Chart
| Fuse | Fuse rating | Circuits protected |
|---|---|---|
| F1 | 10A | Selective Catalytic Reduction. |
| F2 | 15A | Selective Catalytic Reduction. |
| F3 | 15A | Selective Catalytic Reduction. |
| F4 | 10A | Selective Catalytic Reduction. |
What does H mean in fuse?
What is a Class H, Fuse? A UL Class H fuse is a non-current limiting, fuse that is rated to interrupt a minimum of 10,000 amps. The Class H fuse is a one-time fuse that does not have any appreciable degree of time delay. Class H fuses are rated at either 250 volts AC or 600 volts.
What is 250V fuse?
The 250 volt semiconductor fuse is a current limiting, very fast-acting, fuse rated to 250 volts AC and up to 250 volts DC. Current ratings range from 1 to 2,500 amps. The maximum interrupting rating, is 200,000 amps AC and 100,000 DC.
What is fuse speed F?
The speed of a fuse is essentially the time it takes for the fuse to open when a fault current occurs. The speed at which a fuse opens is governed by the material used in the fuse element, the overload current and the ambient operating temperature.
Are Class H fuses current limiting?
Since Class H fuses are not current- limiting and are recognized by regulatory agencies as having only a 10,000A interrupting rating, serious damage could result if a Class R fuse were replaced by a Class H fuse.
How do you tell if a fuse has gone?
Remove the fuse from its holder. In some cases you may need a small screwdriver to unscrew the fuse holder cap. Look at the fuse wire. If there is a visible gap in the wire or a dark or metallic smear inside the glass then the fuse is blown and needs to be replaced.
What are Class H and K fuses?
Class H fuses are used in low-interrupt applications while Class K fuses have a higher interrupting rating.
How can you tell if a light bulb fuse is blown?
Look at the fuse wire. If there is a visible gap in the wire or a dark or metallic smear inside the glass then the fuse is blown and needs to be replaced.
What is a Type F fuse?
They are also known as Fast Blow or F-Type fuses. Slow Acting fuses include a delay mechanism that allows short, lower power electrical surges to pass through the circuit without the fuse blowing. They are also known as Slow Blow or Time Delay fuses.
