Chint NBP125-2P/80A Circuit Breaker

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

Interprétation du modèle: “Chint” is the English brand name of Chint Group. Dans “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 poles, qui peut contrôler simultanément le fil sous tension et le fil neutre. “80UN” refers to the rated current of 80A, representing the maximum current the circuit breaker can carry safely and stably for a long period.

Caractéristiques fonctionnelles: This model is an external circuit breaker for electricity meters. It is suitable for AC 50Hz circuits with a rated voltage of 230V, offrant une protection contre les surcharges et les courts-circuits. Entre-temps, as a supporting circuit breaker for smart electricity meters, it is equipped with functions of remote control tripping and automatic closing after fee recharge.

Paramètres techniques: 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.

Appearance and Installation: 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.

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

Modèle	Paramètres de base	Caractéristiques fonctionnelles	Matching Degree
NBP-125NZS/2P 80A	Frame current 125A, 2P., 80UN, AC 230V, 50HZ	Original same-series product; supports prepaid fee control, remote tripping, automatic closing after fee recharge, as well as overload and short-circuit protection	★★★★★
NBP-100NZS/2P 80A	Frame current 100A, 2P., 80UN, AC 230V, 50HZ	Same series with reduced frame current; identical functions and compatible installation dimensions	★★★★☆
NBP-80NZSY/2P 80A	Frame current 80A, 2P., 80UN, AC 230V, 50HZ	Standard model of the same series; complete fee control functions; DIN rail mounting	★★★★☆

Alternative Models from Other Chint Series (Functionally Compatible)

Modèle	Paramètres de base	Caractéristiques fonctionnelles	Matching Degree
NXB-125(G)/2P 80A	Frame current 125A, 2P., 80UN, AC 230V, 50HZ	Chint standard external circuit breaker for electricity meters; supports remote control and automatic reclosing	★★★★
NB2-125ZT/2P 80A	Frame current 125A, 2P., 80UN, AC 230V, 50HZ	Intelligent type; equipped with electrical parameter measurement, Communication RS485, and remote switching on/off	★★★★

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

Modèle	Paramètres de base	Caractéristiques fonctionnelles	Matching Degree
SCB8ZY-125M/2P 80A	Frame current 125A, 2P., 80UN, AC 230V, 50/60HZ	External for electricity meters; remote control; overload and short-circuit protection; compliant with State Grid standards	★★★★
YFB1Z-125AP/2P 80A	Frame current 125A, 2P., 80UN, AC 230V, 50HZ	Dedicated for prepaid systems; balance-controlled switching on/off; suitable for State Grid and Southern Power Grid systems	★★★★
HXLB5N-125Z/2P 80A	Frame current 125A, 2P., 80UN, AC 230V, 50/60HZ	Remote tripping, automatic reclosing, overload and short-circuit protection	★★★★
HB020C-125/2P 80A	Frame current 125A, 2P., 80UN, AC 230V, 50HZ	Long-distance automatic switching on/off; overload and short-circuit protection; DIN rail mounting	★★★★
KYDB1-80ZFQ/2P 80A	Frame current 80A, 2P., 80UN, AC 230V, 50/60HZ	Prepaid automatic reclosing; balance control; overload and short-circuit protection	★★★☆

Key Points for Alternative Model Selection

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.
Parameter Consistency:

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

Courant nominal: 80UN (long-term operating current)

Frame current rating: ≥ 80A (125A is recommended, consistent with the original model)

Tension nominale: AC 230V (for single-phase fee control applications)

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

Compatibilité d'installation:

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

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

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

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