contactor,cortacircuitos,inversor solar,medidor electrico,baterias solares
Explicación del modelo
| Parte del modelo | Descripción |
| NXMLE | CHINT Kunlun Series Residual Current Operated Cortacircuitos (MCCB with earth leakage protection) |
| 630 | Frame rating current 630A |
| S | Breaking capacity class S (25kA at AC400V/415V, ultimate breaking capacity 50kA) |
| 4300A | 4PAG (trifásico de cuatro hilos, 3P+N), thermal-magnetic trip unit, standard version without accessories |
| 630A | Rated operational current 630A |
- Parámetros clave
| Categoría de parámetro | Valor | Notas |
| Parámetros básicos | ||
| Tipo | Moulded Case Circuit Breaker with Earth Leakage Protection (Disyuntor de corriente residual) | Provides overload, short-circuit and earth leakage protection |
| polacos | 4PAG (3P+N) | Three phases + neutral |
| Tipo de viaje | Termo-magnético (Curva C) | For power distribution protection |
| Tensión nominal de aislamiento Ui | 800V y | |
| Tensión asignada de empleo Ue | 400V/415V AC (4PAG) | |
| Frecuencia nominal | 50/60Hz | |
| Current Parameters | ||
| Frame current Inm | 630A | |
| Corriente nominal en | 630A | |
| Residual operating current Iﾎ馬 | 100/200/300mA ajustable | Selectable per requirements |
| Residual current tripping time | 0.3s (estándar) | Fast personal safety protection |
| Capacidad de ruptura | ||
| Rated service breaking capacity Ics | 25el (CA 400 V.) | Clase S |
| Ultimate short-circuit breaking capacity Icu | 50el (CA 400 V.) | |
| Funciones de protección | Long-time overload, retraso breve, instantaneous short-circuit, protección diferencial | Full protection for circuits and equipment |
- Dimensiones de montaje
| Tipo de montaje | Dimensiones (Ancho×Alto×Profundidad, milímetros) | Notas |
| Fijado (front/rear connection) | 280×280×100 | Standard 4P dimensions |
| Tipo de complemento | 280×280×120 | Including plug-in base |
| Mounting mode | Fijado / Complemento | |
| Tipo de conexión | Frente / Conexión trasera | Rear connection requires special kit |
| Tamaño de terminal | M12 hex socket screw | For large cross-section cables |
- Aplicaciones
- Low-voltage distribution systems: Main or branch protection for three-phase four-wire circuits up to 630A
- Industrial equipment protection: Proteger motores, transformers and other electrical devices against overload, short-circuit and earth leakage
- Electricidad del edificio: Main and sub-distribution boards in commercial buildings and industrial plants
- Personal safety: Indirect contact protection against fatal electric shock
- Electrical fire prevention: Protection against earth fault current induced electrical fires
- Notas de funcionamiento
- Condiciones ambientales:
Temperatura ambiente: -25℃ ~ 70 ℃
Altitud: ≤ 2000m (derate if exceeded)
Humedad: ≤ 95% (sin condensación)
Avoid flammable, explosive or highly corrosive environments
- Requisitos de cableado:
Strictly separate N line and phase lines; N line must pass through the leakage detection transformer
Terminals must be securely tightened to avoid overheating
Cable cross-section suitable for 630A (≥ 185mm² copper recommended)
- Selection matching:
corriente residual: 300mA for general distribution, 30mA for personal protection (special model)
Breaking capacity must match system short-circuit current; Class S suitable for general industry
- Mantenimiento:
Test monthly using the test button
Regularly check terminals for overheating
Keep clean to ensure heat dissipation
- Solución de problemas
| Síntoma | Posibles causas | Soluciones |
| Viajes inmediatamente después del cierre | 1. Cortocircuito | 1. Localizar cortocircuito |
| 2. Residual current too low | 2. Adjust to suitable Iﾎ馬 | |
| 3. Fallo de la unidad de disparo | 3. Reemplace la unidad de disparo | |
| Fails to trip on overload | 1. Thermal trip failure | 1. Replace thermal trip |
| 2. Over-current setting too high | 2. Reset current setting | |
| Fails to trip on earth leakage | 1. Leakage module fault | 1. Replace leakage module |
| 2. N line not through CT | 2. Rewire correctly | |
| 3. Test button fault | 3. Replace test button | |
| Excessive heating during operation | 1. Loose connections | 1. Apretar terminales |
| 2. Sobrecarga | 2. Reduce load | |
| 3. Poor ventilation | 3. Improve cooling |
- Brand Alternatives
| Marca | Modelo alternativo | Compatibilidad |
| Schneider | NSX630S TM630D 4P 3D (with Vigi module) | Same breaking capacity and rated current, dimensiones similares |
| TEJIDO | Tmax T6H630 PR221DS-LSI R630 4P (with RC221) | Matching protection, separate leakage module required |
| siemens | 3VL630N630 4P (with 30mA leakage add-on) | Same frame and rated current, montaje compatible |
| Delicioso | CDM3L-630S/4300A-630A | Direct Chinese alternative, identical dimensions and parameters |
| Interruptor Changshu | CM3L-630S/4300A-630A | Matching technical data, montaje compatible |
- Resumen
CHINT NXMLE‑630S/4300A‑630A is a high-performance 4P earth leakage MCCB for 630A three‑phase four‑wire distribution systems. Proporciona sobrecarga, short‑circuit and earth leakage protection, with Class S breaking capacity suitable for general industrial applications. Its thermal‑magnetic trip (Curva C) is ideal for distribution, effectively protecting equipment and personnel. Correct selection of residual current and proper installation are essential; regular maintenance ensures long service life and reliable protection.
CHINT NXMLE-630S/4300A-630A Mounting Dimensions
- Overall Mounting Dimensions
Mounting dimensions vary slightly by installation type. Official standard values:
| Tipo de montaje | Dimensiones generales (Ancho×Alto×Profundidad, milímetros) | Panel Cutout (milímetros) | Notas |
| Fijado (delantero/trasero) | 280×280×100 | 245×245 (bolt centers) | Standard 4P, front/rear fixed same |
| Complemento | 280×280×120 | 245×245 (base centers) | Includes base depth |
| Conexión trasera (special) | 280×280×100 | 245×245 | Requires rear connection kit |
- Key Dimension Details
- Ancho (W.): 280mm – Standard 4P MCCB width, compatible with mainstream switchgear
- Altura (h): 280mm – Including operating handle, consistent with Kunlun 630A frame
- Profundidad (D):
tipo fijo: 100milímetros
Tipo de complemento: 120milímetros (cuerpo + base)
- Mounting bolts: M12 hex socket for high-current 630A application
- Grosor de la placa de montaje: ≥ 6mm recommended for strength and cooling
- Minimum clearances: ≥25mm left/right, ≥50mm top/bottom for operation and ventilation
- Métodos de montaje
- Montaje fijo: Most common, bolted directly to panel; front or rear connection
- Montaje enchufable: Uses dedicated base for fast replacement, suitable for frequent maintenance
- Conexión trasera: Terminals on rear side, saves front panel space and improves layout
- Notas de instalación
Install vertically or horizontally, tilt angle ≤ 15°
Correctly separate N and phase lines; N must pass through leakage transformer
Check and tighten all terminals after installation
Allow sufficient ventilation to prevent overheating
