The meaning of the model numbers of molded case circuit breakers

YouTube：https://youtube.com/shorts/YSfzWNe1DX4

They are usually composed of letters and numbers. The model naming rules of different manufacturers may vary, but generally they contain the following aspects of meaning:

### Product Type and Series
- **Letter Designations**: Common letters like "MCCB" represent molded case circuit breakers. Different manufacturers may have their own specific letter identifiers, such as the "NSX" series of Schneider, which are used to distinguish different types and series of circuit breakers.

### Number of Poles
- **Number or Letter Identifications**: For example, "1P", "2P", "3P", and "4P" respectively represent single-pole, two-pole, three-pole, and four-pole circuit breakers. Some manufacturers may also directly use the numbers "1", "2", "3", and "4" to represent them, or use specific letters like "A" and "B" to represent different types of four-pole ones.

### Type of Tripping Device
- **Number or Letter Designations**: For example, "2" represents an electronic tripping device, "3" represents a thermal-magnetic tripping device, and "1" represents no tripping device.

### Rated Current
- **Number Representation**: Usually, the rated current value is directly indicated by a number, with the unit being amperes (A). For example, in "C65N-C16/3P", "C16" means the rated current is 16A, and in "BM30-63M/4308", "63" means the rated current is 63A.

### Breaking Capacity
- **Letter or Number Designations**: Some use letters to represent the types of breaking capacity. For example, in Schneider, "N" represents the standard type, "H" represents the high short-circuit breaking capacity type, and "L" represents the low short-circuit breaking capacity type. Some also directly use numbers to represent the specific value of the breaking capacity, with the unit being kiloamperes (kA).

### Accessory Functions
- **Number Combinations or Specific Letters**: For example, in "3300", the last two "0"s mean no accessories. In "3310", "10" represents a shunt release, and in "3320", "20" represents an auxiliary contact, etc. In Schneider's model numbers, "E" represents overload protection, and "M" represents with current transformer, etc.

### Special Functions or Characteristics
- **Specific Letters or Numbers**: For example, in "DZ47LE-63", "LE" represents the leakage protection function. In some model numbers, "G" may represent the improved version, and "F" may represent split-phase operation, etc.

### Design Serial Number
- **Number Representation**: Generally, it is the design version or specific design serial number of the product. For example, "4308" in "BM30-63M/4308" is used to distinguish different designs in the same product series.#IngenieríaEléctrica #DiseñoDeTransformadores #DiseñoDeInductores #TecnologíaDeTransformadores #IngenieríaEléctrica #EnvolturaFoil #FabricaciónDeTransformadores #EficienciaEnergética #DiseñoEléctrico #EnvolturaDeTransformadores #InnovaciónEnIngeniería #TecnologíaDeTransformadores #EnvolturaDeCobre #TransformadoresDeEnergía #TécnicasDeIngeniería #ComponentesEléctricos #EnvolturaEficiente #TransformadoresDeEnergía #FabricaciónDeTransformadores #ComponentesEléctricos #IngenieríaExplicada