Contactor,întrerupător de circuit,invertor solar,contor electric,baterii solare
Tip de produs: Disjunctor inteligent de aer din seria Chint NXA (ACB)
- Definiția codului modelului
| Segment | Cod | Descriere detaliată |
| XA | Cod de serie | New generation intelligent air circuit breaker of Chint |
| 32 | Dimensiunea cadrului | Curentul maxim al cadrului: 3200O |
| N | Tip de montare | Tip fix (W = Draw-out Type) |
| 25 | Curent nominal | Setting rated current In=2500A |
| MD3 | Controler inteligent | MD3 Standard Intelligent Trip Controller |
| AC230 | Control Supply Voltage | Shunt closing/opening coil & control circuit power: AC230V |
| 3P | Numărul de pol | 3-pol (4P = 4-pole with neutral pole) |
| 2500O | Curent nominal | Main body rated operating current: 2500O |
- Parametrii tehnici de bază
- Curent nominal: $I_n=2500\ \mathrm{O}$
- Dimensiunea cadrului: 3200O
- Numărul de pol: 3P
- Tip de montare: Fix
- Tensiune de control: AC230V
- Tensiune nominală de izolație: Ui=1000V
- Tensiune nominală de funcționare: AC400V / AC690V
- Short-Circuit Breaking Capacity @400V:
Ultimate short-circuit breaking capacity $I_{cu}$: ≥85kA
Service short-circuit breaking capacity $I_{cs}$: ≥65kA
- Mecanic / Rezistenta electrica: Design industrial de lungă durată, suitable for main incoming feeders of power distribution rooms
- Functions of MD3 Intelligent Controller
Protecție în patru trepte: Long time delay, short time delay, instantaneous trip and earth fault protection
Monitoring of current, Voltaj, putere și energie; fault memory function
Optional communication module (Modbus-RTU) and local LCD display
Protection against overload, scurt-circuit, subtensiune, phase loss and phase unbalance
- 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
- Supplementary Selection Notes
- Draw-out version with same specification: NXA32W25-MD3-AC230-3P
- 4-pole version available by replacing suffix with 4P
- Custom control power supply: DC220V / AC110V
- Accesorii optionale: Mecanism electric de acționare, locking device, phase barrier, secondary terminal block
Chint NXA Air Circuit Breaker Model List, Comparație între mărci & Accessory Catalogue
- Complete Model Naming Rule
NXA□□□□-□□□-□□□-□P
| Segment | Code Meaning | Valoare opțională | Explicaţie |
| XA | Cod de serie | Fix | Chint Kunlun series intelligent air circuit breaker (ACB) |
| Dimensiunea cadrului | Curent maxim al cadrului | 16, 20, 32, 40 | Corresponds to 1600A, 2000O, 3200O, 4000O |
| Tip de montare | Formular de instalare | N(Fix), W(Retragere) | N=Fixed type, W=Withdrawable/draw-out type |
| Curent nominal | Setarea curentului | 08~40 (×100A) | de ex. 25=2500A, 20=2000A |
| Controler inteligent | Tip unitate de declanșare | MD3, MD4, MF3, MF4 | M=Intelligent, D=Standard, F=Power type (with LCD) |
| Tensiune de control | Operating power | AC220/230/240, DC220 | Power for shunt trip, closing coil and control loop |
| Numărul de pol | Main circuit poles | 3P, 4P | 3-pol / 4-pol (with neutral pole) |
- Lista completă de modele (Classified by Frame Size)
2.1 1600Un cadru (NXA16)
| Tip de montare | Curent nominal | Controlor | Tensiune de control | Polonii | Model complet |
| Fix (N) | 800O | MD3 | AC230 | 3P | NXA16N08-MD3-AC230-3P |
| Fix (N) | 1000O | MF3 | AC230 | 4P | NXA16N10-MF3-AC230-4P |
| Fix (N) | 1250O | MD4 | DC220 | 3P | NXA16N12-MD4-DC220-3P |
| Fix (N) | 1600O | MF4 | AC230 | 4P | NXA16N16-MF4-AC230-4P |
| Retragere (W) | 800O | MD3 | AC230 | 3P | NXA16W08-MD3-AC230-3P |
| Retragere (W) | 1250O | MF4 | DC220 | 4P | NXA16W12-MF4-DC220-4P |
2.2 2000Un cadru (NXA20)
| Tip de montare | Curent nominal | Controlor | Tensiune de control | Polonii | Model complet |
| Fix (N) | 1250O | MD3 | AC230 | 3P | NXA20N12-MD3-AC230-3P |
| Fix (N) | 1600O | MF3 | AC230 | 4P | NXA20N16-MF3-AC230-4P |
| Fix (N) | 2000O | MD4 | DC220 | 3P | NXA20N20-MD4-DC220-3P |
| Retragere (W) | 1600O | MD3 | AC230 | 3P | NXA20W16-MD3-AC230-3P |
| Retragere (W) | 2000O | MF4 | DC220 | 4P | NXA20W20-MF4-DC220-4P |
2.3 3200Un cadru (NXA32)
| Tip de montare | Curent nominal | Controlor | Tensiune de control | Polonii | Model complet |
| Fix (N) | 2000O | MD3 | AC230 | 3P | NXA32N20-MD3-AC230-3P |
| Fix (N) | 2500O | MD3 | AC230 | 3P | NXA32N25-MD3-AC230-3P |
| Fix (N) | 3200O | MF4 | DC220 | 4P | NXA32N32-MF4-DC220-4P |
| Retragere (W) | 2500O | MD4 | AC230 | 3P | NXA32W25-MD4-AC230-3P |
| Retragere (W) | 3200O | MF3 | DC220 | 4P | NXA32W32-MF3-DC220-4P |
2.4 4000Un cadru (NXA40)
| Tip de montare | Curent nominal | Controlor | Tensiune de control | Polonii | Model complet |
| Fix (N) | 3200O | MD3 | AC230 | 3P | NXA40N32-MD3-AC230-3P |
| Fix (N) | 4000O | MD4 | DC220 | 4P | NXA40N40-MD4-DC220-4P |
| Retragere (W) | 3200O | MF3 | AC230 | 3P | NXA40W32-MF3-AC230-3P |
| Retragere (W) | 4000O | MF4 | DC220 | 4P | NXA40W40-MF4-DC220-4P |
- Comparație echivalentă între mărci (Mainstream ACB)
| Chint NXA Model | Schneider Masterpact | ABB Emax 2 | Siemens 3WL | Changshu CW3 | Observații |
| NXA16N08-MD3-AC230-3P | NW16N1-800A | E1N800 R800 | 3WL1116-1AA36-4GA4 | CW3-1600/800A | 1600Un cadru, 800A evaluat |
| NXA20N20-MD4-AC230-3P | NW20N1-2000A | E2N2000 R2000 | 3WL2220-1AA36-4GA4 | CW3-2000/2000A | 2000Un cadru, 2000A evaluat |
| NXA32N25-MD3-AC230-3P | NW32H1-2500A | E3N2500 R2500 | 3WL3225-1AA36-4GA4 | CW3-3200/2500A | 3200Un cadru, 2500A evaluat |
| NXA40N40-MF4-DC220-4P | NW40H1-4000A | E4N4000 R4000 | 3WL4240-1AA36-4GA4 | CW3-4000/4000A | 4000Un cadru, 4000A evaluat |
| NXA16W12-MF3-AC230-4P | NW16H1-1250A | E1N1250 R1250 | 3WL1116-1AA36-4GA4 | CW3-1600/1250A | Tip extras, 4-pol |
| NXA32W32-MD4-DC220-3P | NW32H1-3200A | E3N3200 R3200 | 3WL3232-1AA36-4GA4 | CW3-3200/3200A | Tip extras, 3-pol |
- Intelligent Controller Function Comparison
| Controller Model | Funcții de protecție | Funcții de monitorizare | Comunicare | Afişa | Aplicație |
| MD3 | 4-stage protection: LSI+G | Basic current monitoring | Opțional Modbus-RTU | Indicator LED | Distribuția generală a puterii |
| MD4 | 4-stage + over/under voltage, pierdere de fază, unbalance | Actual / Voltaj / putere | Standard Modbus-RTU | LED + Digital tube | Important power distribution |
| MF3 | 4-stage + selective protection | Actual / Voltaj / putere / energie | Opțional Modbus-RTU | LCD display | Complex distribution system |
| MF4 | Protectie completa + fault early warning | Full electrical parameters + event record | Standard Modbus-RTU + Opțional Profinet | Color LCD | Rețea inteligentă & centru de date |
- Lista completă de accesorii (Clasificat după funcție)
5.1 Operațiunea & Accesorii de control
| Nume accesoriu | Model | Funcţie | Applicable Range |
| Shunt Trip | NXA-F | Control de deschidere de la distanță | Seria completa, AC230V/DC220V |
| Under-Voltage Trip | NXA-UVT | Under-voltage protection (delay optional) | Seria completa, AC230V/DC220V |
| Solenoid de închidere | NXA-CE | Remote closing control | Seria completa, AC230V/DC220V |
| Mecanism electric de acționare | NXA-M | Stocarea energiei electrice & comutarea | Seria completa, pentru operare frecventă |
| Manual Charging Handle | NXA-H | Manual energy storage | Seria completa, standard equipped |
| Draw-out Crank Handle | NXA-C | Special for withdrawable breaker | Retragere (W) serie |
5.2 Auxiliar & Accesorii de alarmă
| Nume accesoriu | Model | Configurare contact | Funcţie |
| Contact auxiliar | NXA-A1/A2/A4 | 1/2/4 contacte de schimbare | Indicație de stare & circuit expansion |
| Contact de alarmă | NXA-B1/B2 | 1/2 contacte de schimbare | Alarma de eroare & semnal de ieșire |
| Auxiliar & Combinație de alarmă | NXA-AB | 2 auxiliar + 1 alarma | Integrated status monitoring |
| Unitate de călătorie preplătită | NXA-PP | Oprire de la distanță | Prepaid system linkage |
5.3 Conexiune & Accesorii de montaj
| Nume accesoriu | Model | Cadrul aplicabil | Funcţie |
| Bariera de fază | NXA-IS16/20/32/40 | Corresponding frame | Inter-phase insulation protection, standard equipped |
| Placă de conectare frontală | NXA-CB | Seria completa | Special for front wiring |
| Kit cablaj spate | NXA-RB | Seria completa | Special for rear wiring |
| Plug-in Connection Kit | NXA-IB | Seria completa | Instalare plug-in |
| DIN Rail Bracket | NXA-DIN | Seria completa | Auxiliary component mounting |
5.4 Siguranţă & Interlock Accessories
| Nume accesoriu | Model | Funcţie | Aplicație |
| Blocare cheie | NXA-KL | Lock on/off status | Prevent misoperation |
| Interblocare prin cablu | NXA-CL | Door-breaker interlock | Safety isolation |
| Linkage Interlock | NXA-LL | Interlock between two breakers | Dual power supply switching |
| Conector secundar | NXA-SP | Secondary circuit connection | Exclusive for draw-out type |
| Husa de protectie | NXA-PM | Panel protection | Rezistent la praf & impermeabil |
5.5 Comunicare & Accesorii de extindere
| Nume accesoriu | Model | Protocol | Funcţie |
| Modbus-RTU Module | NXA-MOD | Modbus-RTU | Monitorizare de la distanță & data transmission |
| Profinet Communication Module | NXA-PRO | Profinet | Industrial Ethernet connection |
| Handheld Test Unit | NXA-TEST | Local debugging | Setarea parametrilor & diagnosticarea defecțiunii |
| SD Card Recording Module | NXA-SD | Data storage | Event recording & analiza defectelor |
- Selecţie & Orientări pentru achiziții
- Frame Selection: Select 1600/2000/3200/4000A frame according to system maximum current, reserve 10-20% marginea.
- Tip de montare: Tip fix (N) for lower cost; tip extras (W) for easy maintenance in critical applications.
- Controller Selection: MD3 for general use; MD4/MF3 for important facilities; MF4 for intelligent systems.
- Configurarea accesoriilor:
Esenţial: 1~2 sets of auxiliary contacts, declanșare sub tensiune
Opțional: Electric operation, modul de comunicare, interlock device
- Certificare: Comply with GB14048.2 and IEC60947-2, with CE and UL certification.
