QA

Quick Answer: What Do The Numbers On Fuses Mean

Car fuses are color coded by amp rating. For example, a standard blue fuse has a 15-amp rating, yellow is 20 amps and green is 30. You can buy them at any auto parts store and at well-stocked service stations. Note: If your new fuse blows soon after installing it, you could have problems in that circuit.

What do the numbers and letters on A fuse mean?

The number and the A (may be mA) is the amp rating of the fuse. The L denotes that it is a low breaking capacity or glass fuse (H is High breaking capacity and is usually a ceramic package). A marking of F315mA would be a 315 milliAmp Quick Acting or Anti Surge, fuse.

How do you read A fuse number?

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).

How do I know what amp fuse to use?

You’ll usually find the fuse rating on the side of your fuse, which will be given in amps. Fuse rating is the amount of current needed for the fuse to blow or break.

What is A 7.5 fuse used for?

Small Tools, Great Use – These 7.5 amp automotive fuses will blow when the current is overloaded, which can protect your safety. It is used in many appliances such as cabin lamp, tail lamp, horn, air conditioning system, or other electronic products.

What is A 313 Series fuse?

Datasheet. The 3AG Slo-Blo® fuse solves a broad range of application. requirements while offering reliable performance and costeffective circuit protection.

What does the letter D mean on A fuse?

Standard non-time delay fuses are for receptacle and lighting circuits. For Canadian requirements, a type “P” fuse is used for non-motor loads and type “D” fuses are used for electric heating and cycling loads circuits. Both fuses have low melting-point temperature elements.

What is the fuse symbol?

Fuse (electrical) A miniature time-delay 250 V fuse that will interrupt a 0.3 A current at after 100 s, or a 15 A current in 0.1 s. 32 mm (1 1/4″) long. Type Passive Working principle Melting of internal conductor due to heat generated by excessive current flow Electronic symbol Electronic symbols for a fuse.

What are the 3 types of fuses?

Different Types of Fuses – Constriction, Working & Characteristics DC Fuses. AC Fuses. Cartridge Fuses. D – Type Cartridge Fuse. HRC (High Rupturing Capacity) Fuse or Link Type Cartridge Fuse. High Voltage Fuses. Automotive, Blade Type & Bolted Type Fuses. SMD Fuses (Surface Mount Fuse), Chip , Radial, and Lead Fuses.

Can I use a 13 amp fuse instead of a 10 amp?

If you replaced it with 13A fuse, it will allow current more than 10A, so it may possible that other components may get damage due excessive current flow than specified. If TV components can sustain up to 13 A current, you can replace it.

What appliances use 13 amp fuse?

13A Fuse – Washing machine, dishwasher, microwave, kettle, toaster, iron.

Can I use a 3 amp fuse in a 13 amp plug?

A 3A fuse is the safest to use and should be used for appliances at 700w or less. Appliances rated above 700w should use a 13A fuse. Be extra cautious when using a 13A fuse and try using a 3A fuse if and when it’s possible.

What is a Type 257 fuse?

Littelfuse ATO 257 Series Fast-Acting Automotive Blade Fuse is designed to protect the power distribution system of the vehicle. This fuse protects electrical, electronic circuitry from overheating when exposed to short circuits and other overcurrent conditions.

Are all 10 amp fuses the same?

Not all car fuses are the same, and most cars have multiple fuses of varying sizes for different electrical components. When you are replacing a car fuse, it is essential to replace the blown fuse with a new one of the same type and size. You should also never replace a blown fuse with one of a higher amperage rating.

What are the standard fuse sizes?

Generally, two sizes of user-replaceable fuses are found: the 1/4” x 1-1/4” and 5×20 mm. Each is available in a variety of volt and amp ratings. There are two basic types of fuses available for appliances and consumer electronics: fast-acting or time-delay.

What does G mean on A fuse?

A UL Class G fuse is a 600/480 volts AC current limiting, fuse that is rated to interrupt a minimum of 100,000 amps. Ampere ratings range from ½ amp to 60 amps. The type G fuse meets the NEC, requirements for branch circuit, protection. The type G fuse is listed under UL 248-5, Class G and CSA Certified,.

What does the R stand for in fuses?

Class R (“R” for rejection) fuses are high performance, 1⁄10 to 600A units, 250V and 600V, having a high degree of current-limitation and a short-circuit interrupting rating of up to 300,000A (RMS symmetrical). The use of Class R fuse holders is thus an important safeguard.

What does the R mean on A fuse?

MVR fuses are current and energy limiting fuses intended for the backup protection of medium voltage motor control. They are non- venting.

What is fuse short answer?

A fuse is a safety device in an electric plug or circuit. It contains a piece of wire which melts when there is a fault so that the flow of electricity stops. When things fuse or are fused, they join together physically or chemically, usually to become one thing.

What does a fuse look like on a schematic?

Fuses are usually shown in schematics with a symbol that looks like a sideways letter “S”.

What is fusing factor?

The fusing factor is the ratio of minimum fusing current and current rating of the fuse. Minimum fusing current is the minimum value of current due to which fuse melts. Current rating of fuse is maximum value of current due to which fuse does not get melt.