Chint NXA32N25-MD3-AC230-3P 2500A

Tip de produs: Chint NXA Series Intelligent Air Circuit Breaker (ACB)

1. Model Code Definition

2. Parametrii tehnici de bază
3. Curent nominal: $I_n=2500\ \mathrm{O}$
4. Frame Size: 3200O
5. Numărul de pol: 3P
6. Tip de montare: Fix
7. Tensiune de control: AC230V
8. Tensiune nominală de izolație: Ui=1000V
9. Tensiune nominală de funcționare: 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. Mechanical / Electrical Endurance: 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, Voltaj, power and energy; fault memory function

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

Protection against overload, scurt-circuit, under-voltage, phase loss and phase unbalance

4. Scenarii de aplicare

Low-voltage main incoming switch for industrial workshops, centre comerciale, 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, Cross-Brand Comparison & Accessory Catalogue

1. Complete Model Naming Rule

NXA□□□□-□□□-□□□-□P

2. Lista completă de modele (Classified by Frame Size)

2.1 1600A Frame (NXA16)

2.2 2000A Frame (NXA20)

2.3 3200A Frame (NXA32)

2.4 4000A Frame (NXA40)

3. Cross-Brand Equivalent Comparison (Mainstream ACB)

4. Intelligent Controller Function Comparison

5. Complete Accessory List (Classified by Function)

5.1 Operațiunea & Control Accessories

5.2 Auxiliar & Alarm Accessories

5.3 Conexiune & Mounting Accessories

5.4 Siguranţă & Interlock Accessories

5.5 Comunicare & Expansion Accessories

6. Selecţie & Procurement Guidelines
7. Frame Selection: Select 1600/2000/3200/4000A frame according to system maximum current, reserve 10-20% marginea.
8. Tip de montare: Tip fix (N) for lower cost; draw-out type (W) for easy maintenance in critical applications.
9. Controller Selection: MD3 for general use; MD4/MF3 for important facilities; MF4 for intelligent systems.
10. Configurarea accesoriilor:

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

Opțional: Electric operation, communication module, interlock device

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