Chint CB125G-125A Miniature Circuit Breaker

Chint CB125G-125A is a miniature circuit breaker launched by Chint Electric, belonging to the CB series. It is mainly used in the power distribution system of the communications industry.

기본 매개변수

정격전류: 125에이

Rated Voltage: 230V for single-pole, 400V for multi-pole

Frequency: 50헤르츠

Pole Count: Multiple options available, including 1P, 2P, 3P and 4P

Tripping Characteristics: Three types of tripping characteristics (B, C, D) are available to meet different load requirements

Breaking Capacity: Rated short-circuit breaking capacity is 10kA, and service short-circuit breaking capacity is 7.5kA

Functional Features

Protection Function: It has overload and short-circuit protection functions, which can quickly cut off the circuit when overload or short-circuit faults occur in the circuit, so as to protect the safety of electrical equipment and lines. It can also be used as a switch and isolating switch for infrequent operation.

High Reliability: Made of high-quality materials, it has passed rigorous tests by well-known manufacturers in the communications industry, complies with relevant standards and EU RoHS requirements, and has high reliability and stability.

Packaging Specifications: Packaging specifications vary with pole count. 예를 들어, 1P products are usually packed 12 pieces per box and 108 pieces per carton; 3P products are usually packed 4 pieces per box and 36 pieces per carton.

Price Reference: Taking Chint Electric Mall as an example, the market price of CB-125G 3P C125 is 209.79 yuan per piece.

Application Scenarios of Chint CB125G-125A Miniature Circuit Breaker

Chint CB125G-125A is a high-performance miniature circuit breaker specially designed for the communications industry. 그 동안에, it is also widely used in various industrial and commercial power distribution systems. Its main application scenarios are as follows:

1️⃣ Core Applications in the Communications Industry

Power Distribution System of Communication Base Stations: Used for protecting base station power supplies, air conditioners, BBU/RRU equipment

Communication Main Cabinets/Power Cabinets: Serves as main incoming line or branch circuit protection to ensure stable operation of equipment

Outdoor Communication Cabinets/Machine Rooms: Adapts to extreme temperatures ranging from -35℃ to +70℃, with anti-salt spray and lightning protection performance

Communication Power Supply Systems: Reliable protection for incoming and outgoing line cabinets of HVDC systems and UPS

Communication Hub Offices/Switching Offices: Provides high-reliability protection for core network equipment

2️⃣ Industrial Power Distribution Field

Factory Power Distribution: Protection for motor control circuits and production line power supplies

Power Distribution Boxes of Mechanical Equipment: Provides dual protection against overload and short circuit

Industrial Automation Systems: Protection for power supplies of control equipment to ensure production continuity

High Inductive Loads: Such as heating equipment and capacitor cabinets, D-type tripping characteristic is particularly suitable

3️⃣ Commercial and Building Power Distribution

Commercial Office Buildings: Main switches of power distribution boxes and floor power distribution protection

High-rise Buildings: Protection for circuits of large-scale equipment such as elevators and water pumps

Shopping Malls: Power distribution systems for lighting, air conditioners, escalators, 등.

Medical Places: Power distribution protection for precision medical equipment and operating rooms

4️⃣ Residential Power Distribution Systems

Main Switches of Power Distribution Boxes in Villas/Apartments (125A large current)

Three-phase Air Conditioning Circuits: Special protection for large-scale central air conditioners

Home Main Power Distribution Boxes: Replace traditional knife switches to provide safer protection

5️⃣ Special Application Scenarios

New Energy and Energy Storage Systems: Protection for photovoltaic inverter output and energy storage battery management systems

Data Centers: Protection for server cabinet PDUs and power distribution for precision air conditioners

Transportation Facilities: Power distribution in public transportation places such as subway stations and high-speed railway stations

Coastal Area Projects: Special anti-salt spray design, suitable for humid and corrosive environments

🔍 Why is CB125G-125A Particularly Suitable for These Scenarios?

📌 Selection Suggestions

Communication Scenarios: Priority is given to Type D tripping characteristic to cope with the starting inrush current of communication equipment

Industrial Motors: Select Type D (10-14In) to withstand motor starting surge

Lighting/Sockets: Select Type C (5-10In) to balance protection sensitivity and stability

Special Loads: Such as transformers and capacitor banks, consider Type OV (14-20In)

요약

With its high reliability, strong adaptability and comprehensive protection functions, Chint CB125G-125A miniature circuit breaker has become the preferred protection device for the communications industry, and also performs excellently in industrial, commercial and residential power distribution fields. Whether you need to protect communication base stations, industrial production lines or commercial buildings, CB125G-125A can provide stable and reliable electrical safety protection.

Comparison Between Chint CB125G-125A and DZ47-63 Circuit Breakers

1. Differences in Core Parameters

1. Differences in Application Scenarios

CB125G-125A (Dedicated for the Communications Industry)

Communication Base Stations: Protection for power supply systems, air conditioners, BBU/RRU equipment

Communication Cabinets/Machine Rooms: Adapt to extreme temperatures ranging from -35℃ to +70℃, with anti-salt spray and lightning protection performance

Communication Power Supply Systems: Protection for incoming and outgoing line cabinets of HVDC/UPS

Industrial Power Distribution: Protection for motor control circuits and production lines, especially suitable for high inductive loads

New Energy Systems: Protection for photovoltaic inverter output and energy storage battery management

Data Centers: Protection for server cabinet PDUs and power distribution for precision air conditioners

DZ47-63 (General-purpose Type)

주거용 배전: Protection for lighting and socket circuits, home power distribution boxes

Commercial Buildings: Lighting and air conditioning systems in office buildings and shopping malls

General Industry: Protection for small equipment and small production lines

Small Infrastructure: Small public facilities such as elevators and water pumps

III. Differences in Technical Characteristics

Core Advantages of CB125G-125A

1. Communication-grade Reliability: Passed rigorous tests by major communication enterprises and specially designed for the communications industry
2. High Current Limiting Capacity: Quickly limits current when short circuit occurs, reducing the scope of fault impact
3. Wide Temperature Operating Range: -35℃~+70℃, adapting to harsh environments such as outdoor base stations
4. Special Protection: Anti-salt spray and lightning protection design, suitable for coastal areas and regions with frequent lightning strikes
5. Zero Arcing Design: Higher safety and reduced maintenance risks
6. DC Compatibility: Some models support both AC and DC, suitable for new energy systems

Core Characteristics of DZ47-63

1. Economical and Practical: Affordable price, suitable for scenarios with limited budgets
2. Compact Size: Standard modular design, saving power distribution box space
3. Easy Installation: 35mm guide rail installation, suitable for various power distribution boxes
4. Rich Product Line: Current specifications range from 6A to 63A, meeting diverse needs
5. Differences in Price and Positioning

CB125G-125A: Relatively high price (about 200 yuan per piece for 3P), positioned for high-end communication and industrial applications

DZ47-63: Relatively low price (about 50-100 yuan per piece), positioned for household and general commercial applications

1. 선택 제안

Situations to Choose CB125G-125A:

– Load current is close to or exceeds 63A, requiring larger protection capacity

– Applied in scenarios with extremely high reliability requirements such as communication base stations and core machine rooms

– Equipment operates in extreme temperature environments (-35℃~+70℃)

– Need stronger short-circuit protection capability (10그만큼)

– Applied in DC systems or new energy fields

– Have special requirements for product service life and reliability

Situations to Choose DZ47-63:

– General power distribution scenarios such as households and small commercial buildings

– Load current ≤ 63A with limited budget

– Standard indoor environment with moderate temperature

– No need for communication-grade special functions

– Used as general circuit protection with moderate reliability requirements

CB125G-125A is a high-end professional model, specially designed for the communications industry. It has stronger protection capability, wider environmental adaptability and higher reliability, suitable for large-scale equipment, key infrastructure and harsh environments. While DZ47-63 is an economical all-round model, with affordable price and compact size, suitable for household and general commercial applications.

Selection Suggestion: Decide according to load current, importance of application scenarios and environmental conditions. Choose CB125G for key equipment and harsh environments, and choose DZ47-63 (or its replacement product NXB-63) for general civil and commercial scenarios.

메모: The DZ47 series has been announced to be discontinued since November 2025 and will be replaced by the NXB series.