What are the different sizes of fuses?

Size groups

How do you size a fuse?

Find the size of fuse by multiplying the amps required by the device (2) by 1.5. 2×1.25 = 2.5 then we will round up to the nearest fuse size (in multiples of 5 amps) which would call for a 5 amp fuse. Cross Reference that fuse size to verify that it’s below the Maximum fuse size called out by this chart.

Are all 10 amp fuses the same?

Since automotive fuses are differentiated both by design type and current rating, all fuses most emphatically are not the same. Although it is definitely possible to replace any ATO fuse with any other ATO fuse, doing so can be extremely dangerous if the wrong amperage fuse is substituted.

Which fuses are larger in size?

The largest size fuse shown in the chart is the 5AG, or “MIDGET,” a name adopted from its use by the electrical industry and the National Electrical Code range which normally recognizes fuses of 9/16” x 2” as the smallest standard fuse in use.

What is Type S fuse?

Type S fuses are also called tamper proof fuses because each fuse size has a different base and thread size. These fuses also require the use of a special adapter which is screwed into the standard Edison base of the fuse holder. The adapters have amperage ratings the same as the fuses which go in them.

What is a Class L fuse?

A Class L fuse is 600 volt AC current limiting fuse that is rated to interrupt a minimum of 200,000 amps. The Type L Fuse is UL Listed under UL 248-10, Class L (601-6,000 amps) and CSA Certified. The Type L fuse is UL Recognized for ampere ratings of 100 to 600 amps.

What is a Type S fuse?

Type S fuses are also called tamper proof fuses because each fuse size has a different base and thread size. These fuses also require the use of a special adapter which is screwed into the standard Edison base of the fuse holder.

What is the standard fuse size?

The standard ampere ratings for fuses (and circuit breakers) in USA/Canada are considered 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 110, 125, 150, 175, 200, 225, 250, 300, 350, 400, 450, 500, 600, 700, 800, 1000, 1200, 1600, 2000, 2500, 3000, 4000, 5000, and 6000 amperes.

How do you determine the primary fuse size?

The primary fuses are sized as a % over the primary current in amps according to the chart below when secondary fusing is not used. Example. You have a 2KVA (2000 VA) transformer and your primary voltage is 460VAC and your secondary voltage is 120VAC. Primary Amps = VA/VAC = 2000/460 = 4.35 amps.

How many amps does a 600 volt Fuse have?

Semiconductor Fuses are also known as High Speed Fuses or Rectifier Fuses. The 600 volt semiconductor fuse is a current limiting very fast-acting fuse rated at 600 volts AC and DC. A midget size (10x38mm) version with current ratings ranging from 5 to 40 amps is available.

How many amperes are in a Class T fuse?

with Class T fuse adaptation—200,000 A at 480 V and 100,000 rms symmetrical amperes at 600 V Ampere sizes 30, 60, 100, 200, 400, 600 30, 60, 100, 200, 400, 600, 800, 1200 Maximum horsepower ratings 200 hp at 240 Vac 250 hp at 240 V, 500 hp at 480 and 600 Vac UL (NEMA) enclosure types Type 1—general purpose indoor use

How many volts does a Littelfuse Fuse have?

FUSE CLASS AND SELECTION CHART UL CLASS LITTELFUSE SERIES OVERLOAD CHARACTERISTICS AC RATINGS DC RATINGS RECOMMENDED FUSE BLOCKS AND FUSE HOLDERS FUSE SERIES PAGE NUMBERS VOLTAGE (VOLTS) CURRENT (AMPERES) INTERRUPTING (AMPERES) VOLTAGE (VOLTS) CURRENT (AMPERES) INTERRUPTING (AMPERES) L

What are the different sizes of car fuses?

The fuse sizes in following chart began with the early “Automobile Glass” fuses, thus the term “AG”. The numbers were applied chronologically as different manufacturers started making a new size: “3AG,” for example, was the third size placed on the market.