What is a T1A fuse?
These are time delay and time lag fuses, T1A being time delay and T1L a time lag. Obviously they are both 1Amp. You should replace like with like but I don’t think there will be an enormous difference between the two.
What is a 250V fuse?
Semiconductor Fuse – 250 Volts 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.
How do you read a fuse marking?
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….Fuse Markings.
| Marking | Fuse Element Speed |
|---|---|
| M | Medium Acting (Mitteltrage) |
| T | Slow Acting (Trage) |
| TT | Very Slow Acting (Trage Trage) |
Can you replace a glass fuse with a normal fuse?
Generally with fuses as long as you replace it with a fuse having the same rating it is OK to do so. Although ceramic fuses do offer better thermal and arc protection than glass fuses which is why they’re used in microwave ovens and other high current appliances. Be aware that there is always a reason why a fuse blows.
Can I replace a 20a 125V fuse with a 20a 250V fuse?
For example, a 125V fuse can be replaced with a 250V fuse of equal amplitude while the voltage of the application is 250V or lower, but a a 250V fuse can’t be replaced with a 125V fuse of equal amplitude if the voltage of the application exceeds 125V.
What amp is 250V?
So, in the example below the maximum amp rating for this switch at 250 volts AC (VAC) is 10 amps; the maximum amp rating at 125 volts AC for the same switch is 15 amps.
How do you tell what size fuse you need?
The simple calculation is watts divided by volts equals amps. After you have calculated this, it is a simple case of adding around 10% to the value and choosing the nearest fuse to match. This is a more precise method then just guessing should you require a 3, 5, or even 13 amp fuse.
How do you know which fuse is for what?
Look at the fuse for its amperage rating. The rating usually is molded in the glass body, printed on a label on the fuse or stamped on the metal button on the bottom of the screw-in fuse base. Replace the blown fuse with a new fuse having the same amperage rating as the blown fuse.
Can I use a ceramic fuse instead of glass?
You can replace a glass fuse with ceramic, but not recommended to replace a ceramic with glass. Be sure they are the same voltage and amp rating, slo-blow, etc.