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Best 11 MCB Manufacturers of 2023

Looking for the best miniature circuit breakers manufacturers to rely on? In this article, we have gathered the Best MCB Brands in the World for your business, including Havells, Schneider, ABB and others. And the types and working principle of available miniature circuit breakers are covered in detail in this reference. Just keep reading!

Miniature Circuit Breaker is known as MCB. When there is an abnormality in the electrical network, such as an overload or short circuit, it automatically switches the electrical circuit off.

Even though the miniature circuit breakers can be reset, the fuse may still detect certain situations and must be replaced. To prevent any form of fire or electrical risks, the MCB is an electromechanical device that protects the electrical load and wires from overcurrent. The MCB is the most popular option for overload and short circuit protection in household applications since handling it is safer and quickly recovers the supply. miniature circuit breakerss are extremely quick to reset and require no upkeep. The respective bi-metal principle used by miniature circuit breakerss guards against overload current and solenoid short circuit current.

Best MCB Manufacturers of 2023

Miniature Circuit Breaker Market Overview

To assist customers in understanding the process, the research on the Miniature Circuit Breakers (MCB) market focuses on providing valuable data on investment pockets, growth opportunities, and major market players. The Miniature Circuit Breakers market research is a thorough examination of the Miniature Circuit Breakers industry, with a particular emphasis on the international market situation.

The purpose of this report is to provide an overview of the global Miniature Circuit Breakers market, with detailed market segmentation by product application and geography. During the forecast period, the Miniature Circuit Breakers market is expected to grow rapidly.

11 Best MCB Manufacturers in the World of 2023

Here are top MCB Manufacturers that can be relied on:

Legrand MCB

Legrand MCB

The company was founded in France and sells its products all over the world. It is manufactured in large quantities, such as switch socket fan regulator distribution board MCB, and so on.

Which is ranked second in terms of switch sockets but first in terms of MCBs. It is the No. 1 brand in India due to the trust and positive response of many customers, as well as its trustworthy services.

Company NameFound YearCountryCEO
Legrand1904IndiaBenoît Coquart

Havells MCB


Havells India Ltd is India’s leading and largest electrical appliance manufacturer, with a global presence that includes kitchen devices home devices LED Light, Fan, MCB, RCCB switch socket modular plate, and the production of a wide range of devices such as motor switch gears.

Havells employs over 6000 people across 23 branch offices in over 50 countries. Their service is both quick and efficient. Customers return to Havells because of the high quality of their products.

Product Features
Company NameFound YearCountryCEO
Havells India Limited1971IndiaLate Sh. Qimat Rai Gupta


IGOYE, founded in 2007, stands as a premier solar equipment manufacturer headquartered in China. Specializing in cutting-edge solar photovoltaic products for over 15 years, they commitment to innovation ensures high-quality solutions for both residential and commercial applications.

Product Features
Company NameFound YearCountryCEO
Igoye2007ChinaMrs Qian

Siemens MCB


Siemens is Europe’s largest industrial manufacturing company. Which has numerous branches around the world. Industry, energy, healthcare, electrical equipment, infrastructure & cities are the primary facilities the company provides for.
The most sought-after companies are Siemens’ MCB and RCCB.

Company NameFound YearCountryCEO
Siemens1847GermanyRoland Busch

Finolex MCB


Finolex is India’s largest manufacturer of electrical and telecom cables, with yearly revenue of more than $2.26 billion. Finolex guards against higher breaking capabilities as well as overloads and short circuits. It was founded in 1945 and has its headquarters in Pune, India.

PVC Insulated Industrial Industrial Cables, PVC Insulated Single Core & Multicore Flexible Industrial Industrial Cables, Rodent Replant Multicore Flexible Industrial Industrial Cables, PVC Insulated Winding Wires & 3 Core Flat Cables are among the company’s products.

Company NameFound YearCountryCEO
Finolex Cables Ltd1967India D K Chhabria

Schneider MCB


The Schneider Company is based in Gurugram, Haryana, India. The company was established in 1836. Schneider has a sizable digital and automated device market. The company is one of the most successful in Europe.

The company offers a diverse range of products for residential and small businesses, building and industrial automation and control, low and medium voltage products and systems, solar and energy products, and so on.

Company NameFound YearCountryCEO
Schneider Electric1836Le Creusot, FranceJean-Pascal Tricoire



The headquarters of ABB Company are in Gurugram, Haryana, India. The company was established in 1883. The company is a Swiss multinational corporation whose primary product is a comprehensive line of medium voltage solutions for utility, industrial, and commercial customers.

ABB is a well-known inverter brand with operations in the United States, Asia, Europe, the Middle East, and Africa.

Company NameFound YearCountryCEO
ABB Ltd.
Bjorn Rosengren

Hager MCB


Hager Australia is a leading provider of electrical installation solutions for single-family, multi-family, and commercial buildings.
commercial structures Hager’s offering includes everything from energy distribution and metering to switches and sockets.
constructing automation

Over the last five years, Hager has developed and introduced Australian-specific solutions in Modular Protection Devices, residential enclosures, Meterboxes, Switches and sockets, Motion Sensors, Timers, Energy Management, and home Automation… to simplify and secure electrical installations.

Company NameFound YearCountryCEO
Hager1955Ensheim, GermanyDean Hager

Orient Electric MCB


The headquarters of Orient Electric Company is in Bhubaneswar, Odisha, India. The company was established in 1954. In India, Orient Electric has units in Kolkata, Faridabad, Noida, and Guwahati. Aside from India, it manufactures and exports fans to 40 other countries.

Aside from that, this company, which sells fans, lighting, home appliances, and switchgear in India, is a subsidiary of the Indian conglomerate CK Birla Group.

Company NameFound YearCountryCEO
Orient Electric1993IndiaRakesh Khanna

Eaton MCB


Eaton is based in New Delhi, India. The company was established in 1999. The company has a significant presence in India. The company operates over 18 plants in India and exports to over 175 countries.
Eaton is a major provider of energy-efficient solutions in the manufacturing industry.

Company NameFound YearCountryCEO
Eaton1911ClevelandCraig Arnold

C&S Electric MCB


The headquarters of C&S is in New Delhi, India. The company was established in 1918. This is a company based in the United States. Its main products include low voltage, medium voltage, diesel generators, power busbar, protection devices, and MCB.

The company’s annual revenue is estimated to be $30 billion. Over 17 people are working on it.

Company NameFound YearCountryCEO
C&S Electric1966IndiaPrakash Chandraker

What is a Miniature circuit breaker?

An automated switch called an MCB activates when too much current is flowing through the circuit. Without any manual replacement, it can be closed again. Fuse replacement or rewiring is required in the case of fuses, depending on the type of miniature circuit breakers used. Fuse is hence referred to as one of the sacrificial devices. This is the primary reason MCBs are utilized in place of fuses in the majority of circuits. Additionally, the switches in the MCB immediately shut off whenever there is a failure in the circuit, making it simple to identify the problem with the device.

MCB: Working Principle

Mini circuit breakers use a moderately robust mechanical mechanism to reduce failures and false alarms. They are activated by overcurrent, which is an electrical current that exceeds a predefined safe currently.

The bimetallic strip inside the MCB heats up, bends, and trips as a result of excessive current. When a switch is released, the electrical contact points are moved apart to contain the arc (electrical discharge). The arc chute is an insulated metal strip that divides and cools the arc. Once the fault has been remedied and the MCBs have been reset, the contacts shut once more.

Both overloading and short-circuiting are protected by an MCB. These are identified in various ways using various procedures. The bimetallic strip uses thermal operation to guard against overload, whereas the tripping coil uses electro-magnetic operation to protect against short circuits.

The MCB will trip (activate) very quickly—within one-tenth of a second—if the discharge is particularly high. The component will react more slowly when the overcurrent approaches the safety limits.

MCB Types

Based on Tripping Characteristics

Type A

This type of miniature circuit breaker is an extremely sensitive gadget that trips right away when the current exceeds two to three times the rated current.

Type B

This MCB type trips between three and five times the full load current.
When connected loads include lighting fixtures and household appliances with mostly resistive elements, Type B devices are typically employed in residential or light commercial applications.
Additionally employed for electronics and computers with very low inrush loads (PLC wiring). In these situations, the surge current levels are quite low.
The Type B miniature circuit breakers functions include circuit protection and control against overloads and short circuits, as well as protection for people and long cables in TN and IT systems.
This Type B MCB is widely used in residential, commercial, and industrial applications.

Type C

Type C MCB trips 5 to 10 times the full load current.
This is utilized in commercial or industrial applications where there is a potential that the circuit could experience greater short circuit current values.
Fluorescent lighting or inductive loads like induction motors make up the majority of the linked loads. Small transformers, illumination, pilot devices, control circuits, and coils are a few examples of applications.
Functions of Type C are protection for resistive and inductive loads with low inrush current; regulation of the circuits against overloads and short circuits and is also used in residential, commercial, and industrial applications.

Type D

Type D MCB trips between ten and twenty times the full load current.
These MCBs are employed in specialized industrial and commercial applications where excessive current inrush can occur. Examples include X-ray equipment, massive winding motors, and transformers.
Devices with a D-curve are appropriate for applications where high inrush current levels are anticipated. In high inductive applications like motors, transformers, and power supplies, the high magnetic trip point minimizes bothersome tripping.
Functions of Type D include safeguards against overloads and short circuits, as well as control over circuits that feed loads with strong inrush current upon circuit closing ( transformers, breakdown lamps). The application includes industrial, commercial, and residential.

Type K

This type of K MCB trips 8–12 times the full load current. These are suitable for motor loads with strong inrush currents and inductive loads.
For motor applications where ampacity climbs quickly and briefly during “start-up,” the K and D curve breakers were also developed.
Functions of Type K are short-circuited and overload protection as well as control for circuits like those for motors, transformers, and auxiliary circuits.
No annoyance tripping in the case of functional peak currents up to 8xIn, depending on the series; the K-type characteristic offers protection to breakable elements in the overcurrent range through its highly sensitive thermostatic bimetal trip; it also offers the best protection to two cables and lines with the application includes commercial and industrial.

Type Z

This Type Z travels at about two to three times the full load current.

These miniature circuit breakers are used to protect extremely delicate electronics like semiconductor devices, since they are highly susceptible to short circuits.

Functions of Type Z are control and protection for electronic circuits against short-circuits and weak, long-lasting overloads and are used in business and industry.

Based on the Number of Poles

Single Pole (SP) 

A single phase of the circuit is protected by a single-pole circuit breaker, which has one switch.

Double Pole (DP)  

Switching and protection for a phase and the neutral are both provided by a two-pole MCB.

Triple Pole (TP)  

Only the three phases of the circuit—not the neutral—are switched and protected by a triple/three phase tiny circuit breaker.

Three Pole with Neutral [TPN (3P+N)]

All three phases of the circuit are switched and protected by a TPN MCB, and neutral is also included as a separate pole.
The neutral pole, on the other hand, is unprotected and can only be swapped.

Four Pole (4P) 

Similar to TPN, a 4 pole MCB additionally incorporates a safe release for the neutral pole.
This MCB should be utilized in situations where a strong neutral current flow across the circuit, such as in unbalanced circuit situations, is possible. 

How to Choose the Right Miniature circuit breaker?

Choosing the right miniature circuit breaker for the electrical installation is critical because it prevents damage to the wiring isolating characteristics. You will be able to easily select the right MCB for your applications after reading our MCB selection guide.

The following parameters should be considered when selecting an MCB (miniature circuit breaker):

Rated current

The maximum current value that a circuit breaker can withstand without tripping is known as the rated current. MCBs have rated currents ranging from 0.5A to 125A. First, calculate the total current in the circuit. Then, choose the appropriate MCB. MCB current ratings should not exceed the cable current carrying capacity. It should also be greater than or equal to the system’s maximum current carrying capacity. Use an MCB that is not less than the total current of the circuit. It would otherwise trip unnecessarily.

Tripping characteristics

The current vs. tripping time relationship is defined by tripping characteristics. They are distinguished by their instantaneous tripping range. The tripping class should be determined based on the loads to be protected.

Number of poles

To provide the necessary protection, you must choose the appropriate number of poles.
Breaking capacity
The breaking capacity of an MCB is the maximum current that it can carry and break. High currents above the MCB’s breaking capacity could damage it. Breaking capacities of 10kA or 6kA are appropriate for residential use. In industrial applications, MCBs with high breaking capacities can be used.
Rated operational voltage
This is the maximum voltage that the MCB can withstand. The indicated value is usually the maximum value. Each MCB operates at a different voltage. You should check the catalogs for this value. Certain characteristics, such as breaking capacity, may differ or even improve at lower voltages.
Insulation voltage

This value serves as a reference for the device’s insulation performance. This value is used to calculate the insulation test voltages (impulse, industrial frequency, and so on). Use MCBs with a high insulation voltage whenever possible. As a result, you will have a strong breaker.

Energy class

The maximum I2t let-through by a miniature circuit breaker under short circuit or earth fault conditions is denoted by an energy limiting class number. This information can be used by the electrical installation designer in the same way that the I2t characteristic information can.
Class 3 is the most current-limiting classification and can be used to protect cables with a smaller cross-sectional area, lowering installation costs. Using class 3 gives you the best results.


Some MCBs can later be outfitted with an auxiliary contact, signal contact, shunt release, and so on. However, keep in mind that some basic MCBs do not accept accessories. You should pay more if you want more features. Examine the manufacturers’ accessory options.


Under normal conditions, the width of a 1P MCB is 17,5mm. 1P is an abbreviation for poles, which is the number of wires. A 1P port can only connect to one line, a 2P port to two lines, and so on. When using multiple MCBs, keep the MCB’s width in mind. Check the fuse box to see if there is enough space.

Mechanical and electrical life

The mechanical life of an MCB is the number of times it can turn on and off without being energized. The electrical life of an MCB is the number of times it can be turned on and off while energized. A good MCB should have a mechanical lifetime of approximately 20.000 and an electrical lifetime of approximately 10.000.

Construction of MCB

An MCB is a molded insulating material enclosure that contains a complete enclosure. This results in mechanically sound and insulated housing.

The switching system consists of two contacts, one fixed and one moving, to which incoming and outgoing wires are connected. Depending on the circuit breaker’s rating, the metal or current carrying parts are made of electrolytic copper or silver alloy.

An electric arc is formed when the contacts are separated in the event of an overload or short circuit. All modern MCBs are designed to handle arc interruption processes in which metallic arc splitter plates provide arc energy extraction and cooling.

The magnetic tripping arrangement consists essentially of a composite magnetic system with a spring-loaded dashpot and a magnetic slug in a silicon fluid, as well as a standard magnetic trip. In the trip arrangement, a current carrying coil moves the slug against a spring towards a fixed pole piece. When the coil produces a sufficient magnetic field, a magnetic pull develops on the trip lever.

The thermal tripping arrangement is made up of a bimetallic strip around which a heater coil is wound to generate heat based on the current flow.

The heater design can be direct, in which current is passed through a bimetal strip that affects a portion of the electric circuit, or indirect, in which a coil of current carrying conductor is wound around the bimetallic strip. In the event of an overload, the deflection of a bimetallic strip activates the tripping mechanism.

Bimetal strips are composed of two different metals, typically brass and steel. Along their length, these metals are riveted and welded. These are designed so that normal currents do not heat the strip to the tripping point, but if the current is increased above the rated value, the strip is warmed, bent, and trips the latch. Bimetallic strips are chosen to provide specific time delays under specific overload conditions.


Miniature Circuit Breakers (MCBs) are used to prevent short-circuiting and overload in electrical systems, equipment, and appliances. In the case of a low voltage electrical network, an MCB makes more sense than a fuse because an MCB is more sensitive to overcurrent.
Before purchasing MCB, make sure to consider features and specifications like current rating, number of poles, fuse type, curve type, and application to ensure you get a variant that meets all of your needs. In this article, you’ll be guided to the top 10 circuit breaker manufacturers in the electric industry.

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