Disjuntor Chint NBP125-2P/80A

The Chint NBP125-2P/80A is a type of disjuntor manufactured by Chint Electric.

Interpretação do modelo: “Chint” is the English brand name of Chint Group. Em “NBP125”, “NBP” is likely the series code for Chint’s specific circuit breaker line; “125” indicates the rated frame current is 125A, meaning the maximum current the breaker’s frame can withstand stably is 125A. “2P” stands for 2 postes, que pode controlar o fio vivo e o fio neutro simultaneamente. “80UM” refers to the rated current of 80A, representing the maximum current the circuit breaker can carry safely and stably for a long period.

Recursos funcionais: This model is an external circuit breaker for electricity meters. It is suitable for AC 50Hz circuits with a rated voltage of 230V, fornecendo proteção contra sobrecarga e curto-circuito. Enquanto isso, as a supporting circuit breaker for smart electricity meters, it is equipped with functions of remote control tripping and automatic closing after fee recharge.

Parâmetros Técnicos: It complies with standards such as GB/T 10963.1 and CQC 1121. The pollution degree is Class 2, the protection class is IP20, the installation category is Class II and III, and the ambient air temperature range is -25°C ~ +60°C.

Aparência e instalação: It generally adopts a plastic case structure, featuring small size, light weight and easy installation. It is usually installed on a DIN rail and can be conveniently mounted inside a distribution box.

1. Chint Same-Series/Same-Function Alternative Models (Optimal Match)

1. Alternative Models from Other Chint Series (Functionally Compatible)

III. Alternative Models from Other Brands (Compatible with State Grid/Southern Power Grid)

Key Points for Alternative Model Selection

1. Functional Matching: Select external circuit breakers for electricity meters that must have the three core functions: remote control tripping, automatic closing after fee recharge—these are the core features of the NBP series.
2. Parameter Consistency:

Poloneses: strictly 2P (controlling both live wire and neutral wire at the same time)

Corrente nominal: 80UM (long-term operating current)

Classificação atual do quadro: ≥ 80A (125A is recommended, consistent with the original model)

Tensão nominal: CA 230 V (for single-phase fee control applications)

3. Certification Compliance:

Must have CCC Compulsory Certification and CQC Certification

Comply with the State Grid Technical Specification for External Circuit Breakers of Electricity Meters (Q/GDW 11421-2015)

Pollution degree Class 2, protection class IP20, installation category Class II/III

4. Compatibilidade de instalação:

Standard 35mm DIN rail mounting (consistent with the NBP series)

Width is recommended to be ≤ 36mm (to ensure space compatibility inside the distribution box)

5. Communication Compatibility:

For network management, select models supporting RS485 communication or power line carrier communication

Communication protocols must be compatible with the State Grid/Southern Power Grid power consumption information collection system

Recommendation Priority

1. Chint same-series alternatives (NBP-125NZS/2P 80A): Totalmente compatível, no need to adjust any wiring or settings
2. Other Chint series (NXB-125(G)/2P 80A): Same brand, qualidade confiável, convenient installation and maintenance
3. Other brands’ State Grid standard models (SCB8ZY-125M/2P 80A): Potentially more cost-effective with fully matching functions