Chint NXA32N25-MD3-AC230-3P 2500A

Тип продукта: Chint NXA Series Intelligent Air Circuit Breaker (АКВ)

1. Model Code Definition

2. Основные технические параметры
3. Номинальный ток: $I_n=2500\ \mathrm{А}$
4. Размер кадра: 3200А
5. Номер полюса: 3П
6. Тип монтажа: Зафиксированный
7. Управляющее напряжение: AC230V
8. Номинальное напряжение изоляции: Ui=1000V
9. Номинальное рабочее напряжение: AC400В / AC690В
10. Short-Circuit Breaking Capacity @400V:

Ultimate short-circuit breaking capacity $I_{cu}$: ≥85kA

Service short-circuit breaking capacity $I_{cs}$: ≥65kA

9. Механический / Электрическая выносливость: Industrial long-life design, suitable for main incoming feeders of power distribution rooms
10. Functions of MD3 Intelligent Controller

Four-stage protection: Long time delay, short time delay, instantaneous trip and earth fault protection

Monitoring of current, Напряжение, power and energy; fault memory function

Optional communication module (Modbus-RTU) and local LCD display

Protection against overload, короткое замыкание, under-voltage, phase loss and phase unbalance

4. Сценарии применения

Low-voltage main incoming switch for industrial workshops, shopping malls, hospitals and substations

Main protection for generator and transformer outgoing circuits

Large-capacity power distribution and bus tie cabinet

5. Supplementary Selection Notes
6. Draw-out version with same specification: NXA32W25-MD3-AC230-3P
7. 4-pole version available by replacing suffix with 4P
8. Custom control power supply: DC220V / 110 В переменного тока
9. Optional accessories: Electric operating mechanism, locking device, phase barrier, secondary terminal block

Chint NXA Air Circuit Breaker Model List, Межбрендовое сравнение & Accessory Catalogue

1. Complete Model Naming Rule

NXA□□□□-□□□-□□□-□P

2. Complete Model List (Classified by Frame Size)

2.1 1600Рамка (NXA16)

2.2 2000Рамка (NXA20)

2.3 3200Рамка (NXA32)

2.4 4000Рамка (NXA40)

3. Cross-Brand Equivalent Comparison (Mainstream ACB)

4. Intelligent Controller Function Comparison

5. Complete Accessory List (Classified by Function)

5.1 Операция & Control Accessories

5.2 Вспомогательный & Alarm Accessories

5.3 Связь & Mounting Accessories

5.4 Безопасность & Interlock Accessories

5.5 Коммуникация & Expansion Accessories

6. Выбор & Procurement Guidelines
7. Frame Selection: Select 1600/2000/3200/4000A frame according to system maximum current, reserve 10-20% допуск.
8. Тип монтажа: Фиксированный тип (Н) for lower cost; draw-out type (Вт) for easy maintenance in critical applications.
9. Controller Selection: MD3 for general use; MD4/MF3 for important facilities; MF4 for intelligent systems.
10. Accessory Configuration:

Essential: 1~2 sets of auxiliary contacts, under-voltage trip

Необязательный: Electric operation, модуль связи, interlock device

5. Сертификация: Comply with GB14048.2 and IEC60947-2, with CE and UL certification.