CHINT Circuit Breakers’ Core Differences

The core differences of CHINT circuit breakers lie in series positioning, breaking capacity, tripping characteristics, pole specifications, expansion functions, application scenarios, and price . เบรกเกอร์วงจรขนาดเล็ก (MCBs) are mainly used for residential applications, while molded – case circuit breakers (MCCBs) and air circuit breakers (ACBs) are preferred for industrial purposes. Selection should match the load requirements and budget constraints.

1. Core Series Classification and Positioning

1. Key Technical Parameter Differences (Core Comparison Between Miniature and Molded – Case Circuit Breakers)
2. Core Differences of Miniature Circuit Breakers (MCB/RCBO)

2. Core Differences of Molded – Case Circuit Breakers (เอ็มซีซีบี)

III. จุดเลือกที่สำคัญ (By Scenario)

1. Residential Decoration Selection

Budget – priority: NBE7 (16A–40A) or NXB, featuring high cost – effectiveness.

Safety – priority: NB6 (10mA residual current protection) or NB3 (slim design), suitable for families with infants and young children and smart homes.

Old house renovation: Direct replacement with DZ47 without modifying the air – conditioning circuit.

1. Comparison of Mainstream Miniature Circuit Breaker (เอ็มซีบี) Series (สูง – frequency for Sales)

MCBs are crucial for end – user selection. The following are the key differences among CHINT’s most commonly used MCB series, which directly affect quotation and customer communication:

1. Differences in Key Technical Parameters (Frequently Asked by Customers)
2. Tripping Characteristics

Type B: Tripping current of 3In–5In, suitable for sensitive electronic equipment such as computers and PLCs.

ประเภทซี: Tripping current of 5In–10In, suitable for general loads like lighting and ordinary sockets (mainstream for residential use).

Type D: Tripping current of 10In–20In, suitable for loads with high starting inrush current such as motors, เครื่องปรับอากาศ, and compressors.

2. Pole Selection

1ป: Only disconnects the live wire (ล), used for low – power branch circuits like lighting, with the lowest cost.

1พี+เอ็น: Disconnects the live wire and monitors the neutral wire (เอ็น), cost – effective and suitable for ordinary sockets.

2ป: Disconnects both the live wire and neutral wire simultaneously, highly safe, used for high – power household appliances such as air conditioners and water heaters.

3P/4P: Used for three – phase equipment (เช่น, industrial motors and water pumps). 3P disconnects three – phase live wires, and 4P disconnects three – phase live wires plus the neutral wire.

3. ทำลายความจุ

– Breaking capacity determines whether a circuit can be reliably disconnected during a short – circuit. For residential use, a breaking capacity of over 6kA is recommended; for industrial and commercial applications, over 10kA is advisable to prevent arc faults.

1. Quick Selection Guide (For Fast Customer Recommendations)

Regular residential use: NXB Series (10kA breaking capacity, full pole configurations, expandable with accessories, suitable for most residential decoration projects).

Budget – constrained: NBE7 (low price, with status indicators, suitable for small – current branch circuits).

สูง – end residential decoration: NB6 (elegant appearance, complete specifications, suitable for smart homes and demanding customers).

Industrial power applications: Prioritize NXM molded – case circuit breakers or NA Series air circuit breakers, as their breaking capacity and accessories are better suited for heavy – duty loads.

ปกเกล้าเจ้าอยู่หัว. Core Differences from Competitors (เอบีบี, ชไนเดอร์)

ราคา: CHINT’s products are 15%–30% cheaper than ABB and Schneider products of the same specifications, boasting a distinct cost – effectiveness advantage, which is suitable for budget – sensitive customers.

Accessory ecosystem: CHINT’s modular accessories (เช่น, shunt trip and under – voltage trip) are more affordable and highly compatible, facilitating quotation combinations.

ทำลายความจุ: ต่ำ – to mid – range MCBs (เช่น, DZ47) have a breaking capacity of 6kA, while the mainstream NXB Series reaches 10kA, which is on par with the mid – range series of international brands.