Miniature fuse

Nowadays, in the electrical wiring systems of buildings, safety matters are given great importance. In this field, they use many devices and tools to achieve the security of electrical circuits and building wiring. A miniature fuse is one of these devices. The work of the miniature fuse is to protect electrical circuits against unauthorized currents. To learn about other protectors such as voltage protectors and its different types such as single-phase and three-phase current voltage protectors, etc., you can refer to the related page.

 

Specifications of miniature fuse

Miniature Circuit Breaker (MCB) is a type of circuit breaker. This switch is sensitive to excess electricity currents and cuts off the electricity immediately after encountering excess current; In other words, it can be said that a miniature fuse is a protection and control device for electric current that reacts to primary current and excessive current and disconnects and connects the electric current so as not to damage other devices.

Advantages of buying miniature fuse from jbh

jbh company is one of the most well-known companies in the field of producing knowledge-based products, which is also responsible for the design of these products.

As we know, the purchase of electrical goods is very careful because the use of non-original goods sometimes leads to irreparable accidents.

jbh collection has provided a unique opportunity to have a safe and secure purchase by considering factors such as providing the original product and guaranteeing its authenticity, unconditional replacement of the product and offering a three-year warranty.

 

Also, by combining several products, this collection has provided an opportunity for customers to buy one product and benefit from several different products so that it takes up less space and saves money.

 

The best miniature fuse in JBH

 

Since the purchase of electrical equipment plays an effective role in establishing and ensuring the security of the environment, you should pay attention to the quality and authenticity of the products when purchasing them; Because buying an invalid product carries the risk of financial and life losses. JBH’s technical engineering team in the field of producing knowledge-based products such as protectors and miniature fuses, over the years of its continuous activity, has produced and marketed the highest quality electrical products and equipment. The goal of this collection has been to design perfect and diverse products with an exclusive approach in order to increase the satisfaction of its customers. To view all types of miniature fuses and protectors such as miner protectors, TV and refrigerator protectors, etc., you can refer to the articles page on the JBH website.

 

Miniature fuse protectors

The miniature fuse works by two mechanisms. Bimetallic performance and magnetic performance. In the following, we will examine these two mechanisms:

performance without metal; These mechanisms are for protection against overload in the electric current. In this way, the excess current is detected by a metal called bimetal. When the continuous current exceeds the rated current, this metal heats up and bends, causing the fuse contact to operate and break the circuit.
magnetic performance; This mechanism protects against short circuits. The short-circuit current is detected magnetically by a small-turn, large-diameter coil, which helps the miniature fuse to operate.

Miniature fuse operation speed

Miniature fuse operation speed

• Quick-action switches: miniature quick-action switches have a quick response and cut off the power flow in a short time.
  Slow switches: The response of these switches is slow and they cut off the power with a delay.

The types, in the order of the fastest reaction to power outages, are: Type Z, Type B, Type C, and Type D.

 

Types of miniature fuses

Miniature fuses have several uses, which can be divided into several types:

Type B; Lighting

B-type miniature fuses are quick-acting switches that react to excess currents and are mostly used for industrial lighting and residential buildings. B-type miniature switches are used for small inductive or resistive loads; Also, in excess current with a load between 3 and 5 times the rated current at a given time, they cut the circuit and are therefore practical and effective for home use.

 

Type C; motorized

In contrast to fast-acting keys, there are C-type keys, which are known as slow-acting keys. These keys are used in industrial and commercial facilities. When a current with a load of 5 to 10 times the rated current passes through the circuit, the power is cut off by these switches. Type C fuses are actually used for fluorescent lamps or small motors. The duration of power outage with this switch is longer than the type B switch. When many short circuits occur, these switches are used for high inductive loads.

 

Type D; Transformer

The power cut time with the D type miniature switch is longer than other switches. Type D fuses are used for special industrial uses such as transformers and industrial welding equipment or X-ray generators. When a current with a load of 10 to 20 times the rated current passes through the circuit, D-type switches cut off the current.

 

Type K; the power

Miniature switches are used to protect power circuits, motors and transformers. The K-type switch is more sensitive to excess currents than other switches and cuts off the power faster; But during short circuit, it works somewhat like D and C type switches.

 

Type Z; very sensitive

Z type switches are used in circuits with very high sensitivity. These switches cut off the power quickly when the passing current exceeds the rated current. Z type switches cut off electricity faster than other types when excess currents pass and during short circuit; Because, as mentioned, they are used in very sensitive circuits.

current in a miniature fuse

There are two types of currents in miniature fuse types; Rated current and instantaneous current. In the following, we will define these flows:

 

rated current

In each miniature key, there is a named stream that is special to itself; In fact, the maximum allowable current that a miniature fuse can carry without breaking is called the rated current. If more current passes through the miniature switch, the miniature switch reacts and cuts off the power. In miniature fuses, the rated current is written as a one-digit or two-digit number.

 

Current flow

A number like 3000 or 6000 is engraved on the miniature keys. This number is located in a rectangular box and shows the amount of current that the switch can withstand in one moment or one second. In other words, the amount of current that a miniature fuse can withstand in a short moment is called instantaneous current.

 

The cause of miniature fuse jumping

When a short circuit occurs, the power to the building unit is cut off; So we need to know what is the cause of this?

To find the cause of miniature fuse jumping, we need to check two options:

electrical connection
Miniature fuse failure

 

Uses of jBH miniature keys

Because the miniature keys are the life-saving keys; So its use in every residential and office building is vital. In the following, we list the uses of these protective keys:

hospitals
Industrial switchboard
Companies and departments
Residential Houses
Industrial sectors

 

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The price of a miniature fuse depends on various factors, which can include whether the fuse is fast or slow, its body material, fuse type, and the manufacturer’s brand.

As we said, the price of this product varies depending on various factors; But it should be kept in mind that quality is the first word in electrical goods, so low price should not be sacrificed for quality.

jbh company has provided safe and quality shopping for customers by providing original products at the best price.

To know the price list of miniature fuse for building and industrial sectors, you can refer to JBH website and after viewing the products, complete your order through the registration and purchase system.