Chint NXA32N25-MD3-AC230-3P 2500A

Tipo de produto: Chint NXA Series Intelligent Air Circuit Breaker (ACB)

1. Model Code Definition

2. Parâmetros técnicos principais
3. Corrente nominal: $I_n=2500\ \mathrm{UM}$
4. Tamanho do quadro: 3200UM
5. Número do pólo: 3P
6. Tipo de montagem: Fixo
7. Tensão de controle: AC230V
8. Tensão nominal de isolamento: Ui=1000V
9. Tensão operacional nominal: AC400V / AC690V
10. Short-Circuit Breaking Capacity @400V:

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

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

9. Mecânico / Resistência Elétrica: 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, tensão, power and energy; fault memory function

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

Protection against overload, curto-circuito, under-voltage, phase loss and phase unbalance

4. Cenários de aplicação

Low-voltage main incoming switch for industrial workshops, shoppings, 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 / AC110V
9. Optional accessories: Electric operating mechanism, locking device, phase barrier, secondary terminal block

Chint NXA Air Circuit Breaker Model List, Comparação entre marcas & Accessory Catalogue

1. Complete Model Naming Rule

NXA□□□□-□□□-□□□-□P

2. Lista completa de modelos (Classified by Frame Size)

2.1 1600Um quadro (NXA16)

2.2 2000Um quadro (NXA20)

2.3 3200Um quadro (NXA32)

2.4 4000Um quadro (NXA40)

3. Cross-Brand Equivalent Comparison (Mainstream ACB)

4. Intelligent Controller Function Comparison

5. Complete Accessory List (Classified by Function)

5.1 Operação & Control Accessories

5.2 Auxiliar & Alarm Accessories

5.3 Conexão & Mounting Accessories

5.4 Segurança & Interlock Accessories

5.5 Comunicação & Expansion Accessories

6. Seleção & Procurement Guidelines
7. Frame Selection: Select 1600/2000/3200/4000A frame according to system maximum current, reserve 10-20% margem.
8. Tipo de montagem: Tipo fixo (N) for lower cost; draw-out type (C) 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

Opcional: Electric operation, módulo de comunicação, interlock device

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