{"id":10661,"date":"2026-10-11T06:34:37","date_gmt":"2026-10-11T06:34:37","guid":{"rendered":"https:\/\/cntnmcb.com\/?p=10661"},"modified":"2026-10-11T08:17:07","modified_gmt":"2026-10-11T08:17:07","slug":"mccb-types-definition-and-selection-guide-2","status":"publish","type":"post","link":"https:\/\/cntnmcb.com\/fr\/mccb-types-definition-and-selection-guide-2\/","title":{"rendered":"Types de disjoncteurs MCCB : d\u00e9finition et guide de s\u00e9lection"},"content":{"rendered":"
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Disjoncteur \u00e0 bo\u00eetier moul\u00e9<\/a> (MCCB) is very significant in the protection of electric circuits against overload and short circuit faults.<\/p>

Selection of the right MCCB enhances efficiency in operation as well as ensures safety.<\/p>

But selecting the wrong one will result in insufficient protection of the apparatus, frequent tripping, and higher costs for installation.<\/p>

There are several factors which should be considered while selecting the correct MCCB.<\/p>

But buyers should keep in mind this important factors including voltage, load current, prospective short circuit current, environmental conditions and coordination with other protection devices.<\/p>

Today, our team will give information about MCCB definition, various types of MCCBs, their features, and uses.<\/p>

In addition, we will also provide detailed information for selecting the right MCCB. Our team is here to provide help to MCCB buyers and electrical contractors.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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What Is An MCCB?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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An MCCB stands for \u00a0Molded Case Circuit Breaker. It is an electrical device whose purpose is to interrupt the flow of current in case there is an overload or a short circuit fault in the circuit.<\/p>

This type of breaker is enclosed in a molded case.<\/p>

The breaker has current carrying contacts through which the current passes normally.<\/p>

A trip device in the breaker senses any abnormal condition and breaks the contacts if there is need for protection.<\/p>

Based on its design, the trip device can be either of thermal-magnetic type or electronic.<\/p>

There is also an arc quenching mechanism in the breaker.<\/p>

This mechanism becomes vital during a short circuit fault where an arc causes a lot of heat as a result of breaking contacts.<\/p>

Protection provided by the MCCBs is useful in protecting cables, distribution equipment, and loads.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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What Are The Main MCCB Types?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Classification of MCCBs is possible on the basis of the operating mechanism, adjustability, number of poles, amperage rating, and application.<\/p>

Such knowledge aids the purchaser in selecting the right breaker for his\/her application.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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1. Thermal Magnetic MCCB<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Combining both the magnetic and the thermal form of protection, the thermal-magnetic MCCB is designed such that it incorporates both forms of protection in one circuit breaker.<\/p>

The thermal part normally consists of a bimetallic switch which bends after being heated to trip the circuit breaker due to overheating resulting from an overload current.<\/p>

Magnetic operation takes place rapidly as a response to fault current to enable separation of the circuit breaker in the event of a short circuit.<\/p>

Thermomagnetic MCCBs are widely used in commercial distribution panels, machinery circuits, and power distribution.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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2. Electronic MCCB<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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An electronic MCCB operates through electronic sensing and a trip unit that helps in monitoring current and circuit interruption depending on certain conditions.<\/p>

There is usually a combination of adjustable long time, short time, instantaneous, and ground fault protection features in some types of MCCBs.<\/p>

Electronic trip units have advantages of increased precision, better monitoring, and coordination capability with other protection devices.<\/p>

Electronic trip units also have additional features like measurement, alarm, communications, and events.<\/p>

Electronic MCCBs are used in high voltage installations, especially in big commercial buildings and industries.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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3. Fixed Trip MCCB<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Fixed MCCBs have preset parameters of protection, either because of the way they have been designed or due to factory settings.<\/p>

It is possible that, in some cases, the point at which tripping occurs may not be very adjustable.<\/p>

These breakers are appropriate where the loads are known, and there is no need to coordinate them with other protective devices.<\/p>

The major disadvantage is inflexibility in terms of changes in the load or different requirements for coordination. Customers should verify the actual settings of the breaker.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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4. Adjustable Trip MCCB<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Adjustable Trip MCCB is where one can change one or more of its protective parameters within a certain range allowed by the manufacturer of the product.<\/p>

This would depend on the particular design of the MCCB.<\/p>

This is a good choice when an engineer needs to set a breaker according to certain load characteristics of the circuit and coordinate it with other protective devices either upstream or downstream of that circuit.<\/p>

Adjustable Trip MCCB is applied in various applications including industrial distribution and machines.<\/p>

Nevertheless, the adjustment should not exceed the limits of the manufacturer.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Important distinction<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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These classifications can overlap.<\/p>

For example, an MCCB may be electronic, adjustable-trip, three-pole, and designed for a particular current rating simultaneously.<\/p>

Buyers must consider each category separately because they are not exclusive categories.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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MCCB Types Based On Number Of Poles<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The number of poles indicates the number of circuit conductors controlled by the MCCB.<\/p>

The proper arrangement will be selected based on the nature of the electrical power supply, earthing system, and requirements of the neutral.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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1-Pole MCCB<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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1-pole MCCB controls just one conductor and may be appropriate for particular single conductor applications.<\/p>

These applications are rarer than multi-pole MCCBs in many industrial power distribution systems.<\/p>

The design engineer is required to ensure that the breaker is capable of meeting all isolation and protection requirements.<\/p>

One cannot assume that the single pole breaker isolates all conductors of the circuit.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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2-Pole MCCB<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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A 2-pole MCCB switches two conductors and may be used in suitable single-phase systems.<\/p>

Depending on the system arrangement, these conductors may be line and neutral or two live conductors.<\/p>

It is important for consumers to ensure that the poles with overcurrent protection are identified, along with whether the neutral pole has been switch-protected.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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3-Pole MCCB<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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A 3-pole MCCB is usually used for three-phase applications.<\/p>

The three-pole breaker switches three phases and is used for many applications like industry distribution boards, motors, pumps, compressors, and machines.<\/p>

It should have appropriate ratings for suitable current, voltage, and short-circuit applications.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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4-Pole MCCB<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The 4-pole MCCB acts on three-phase conductors as well as the neutral conductor.<\/p>

The 4-pole MCCB is necessary when there is need for neutral switching in the design of the installation.<\/p>

It will be important to consider the type of the installation as well as the regulations applicable when selecting the four-pole breaker.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Pole Configuration Comparison<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\tMCCB Type<\/span><\/th>\n\t\t\t \t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t\tNombre de p\u00f4les<\/span><\/th>\n\t\t\t \t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t\tApplication type<\/span><\/th>\n\t\t\t \t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t\tMain Feature<\/span><\/th>\n\t\t\t \t\t\t\t <\/tr>\n\t\t\t <\/thead>\n\t\t\t \t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t1-Pole\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t1\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tSpecific single-conductor circuits\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tSingle-pole switching\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t2-Pole\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t2\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tSuitable single-phase systems\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tTwo-pole control\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t3-Pole\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t3\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tDistribution triphas\u00e9e\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tThree-phase switching\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t4-Pole\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t4\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tThree-phase systems requiring neutral switching\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tThree phases plus neutral\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t <\/tbody>\n\t\t\t<\/table>\n\t\t<\/div>\n\t \t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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MCCB Types Based On Trip Characteristics<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Trip Characteristics are used to define how the breaker reacts to various currents.<\/p>

Trip characteristics help consumers choose the appropriate protection for their cables, motors, transformers, and other electrical devices.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Thermal tripping<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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The thermal tripping action normally reacts to overloading conditions.<\/p>

In cases where the current keeps flowing beyond the permissible level, heat is generated, and finally, the tripping action is activated.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Magnetic tripping<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Magnetic tripping responds rapidly when current reaches a high threshold, such as during a short circuit. The exact pickup level depends on the breaker design and its specifications.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Electronic trip units<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Electronic trip units electronically monitor current, with the ability to set protection parameters.<\/p>

According to the type of electronic trip unit, there may be various functions including adjustable time delay and instantaneous tripping.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Fixed and adjustable trip<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Fixed and adjustable trips describe how protection settings are configured rather than separate sensing technologies.<\/p>

A fixed-trip thermal-magnetic MCCB and an adjustable electronic MCCB are examples of different combinations.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Trip Characteristics Comparison<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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In choosing an MCCB, customers are advised to look at the true trip characteristic, pickup, and time delay of the device.<\/p>

The category alone is not an indication of the coordination capability with other protection devices.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\n\t\t\t \n\t\t\t \n\t\t\t\t\t\t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\tType de voyage<\/span><\/th>\n\t\t\t \t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t\tFonction principale<\/span><\/th>\n\t\t\t \t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t\tResponse or Setting<\/span><\/th>\n\t\t\t \t\t\t\t \n\t\t\t\t\t\t\t\t\t\t\t\t\t\tSuitable For<\/span><\/th>\n\t\t\t \t\t\t\t <\/tr>\n\t\t\t <\/thead>\n\t\t\t \t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tThermal\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tProtection contre les surcharges\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tTime-delayed response\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tSustained overloads\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tMagn\u00e9tique\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tHigh-current fault protection\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tRapid response\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tShort-circuit faults\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\u00c9lectronique\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tConfigurable protection\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tSettings depend on trip unit\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tIndustrial distribution\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tCorrig\u00e9\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tPredetermined protection settings\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tLimited adjustment\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tStandardized loads\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tR\u00e9glable\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tFlexible protection settings\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tUser-configured within permitted limits\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t \t\t\t\t\t\t\t\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\tVariable loads and coordination\t\t\t\t\t\t\t\t\t\t\t\t<\/div><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t \t\t\t <\/tbody>\n\t\t\t<\/table>\n\t\t<\/div>\n\t \t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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MCCB Types Based On Current Rating<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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MCCB comes in different ratings and sizes of frames according to the electrical load.<\/p>

The rated current denotes the current that the breaker is capable of carrying, while the frame size represents its product size.<\/p>

These values are related but are not interchangeable. A frame may support several current ratings or trip-unit options, depending on the manufacturer’s product range.<\/p>