Product Description:
The CHINT NXM-630S/4300 630A MCCB is a high-performance, heavy-duty molded case circuit breaker engineered for large-scale electrical systems. With a rated current of 630A and breaking capacity of up to 50kA at 230/240V, this MCCB provides maximum protection against overloads, short circuits, and faults in demanding environments.

Built for reliability and space efficiency, this 3-pole MCCB features a thermal-magnetic trip unit and complies with international standards including IEC/EN 60947-2. It is ideal for mission-critical power systems in industrial plants, infrastructure, and large commercial facilities.

Key Features:

• ✅ Rated Current: 630A

• ✅ Breaking Capacity: 50kA at 230/240V, 36kA at 400/415V

• ✅ Voltage Rating: Up to 800V AC (Ui)

• ✅ Pole Configuration: 3P (Three-phase)

• ✅ Trip Unit: Fixed thermal-magnetic protection

• ✅ Push-to-Trip Button for manual test function

• ✅ Standards: IEC/EN 60947-2, CE, KEMA, EAC

• ✅ Rugged NXM-630 Frame Size for high-load distribution systems

Technical Specifications:

• Model: NXM-630S/4300

• Rated Current (In): 630A

• Rated Insulation Voltage (Ui): 800V

• Rated Impulse Withstand Voltage (Uimp): 8kV

• Rated Frequency: 50Hz / 60Hz

• Rated Operating Voltage (Ue):

  • 230V: 50kA

  • 240V: 50kA

  • 400V: 36kA

  • 415V: 36kA

• Breaking Capacity (Icu/Ics):

  • 230/240V: 50kA / 30kA

  • 400/415V: 36kA / 20kA

• Operating Temp: -25°C to +70°C

• Mounting: Fixed mount (front connection)

• Standards: IEC/EN 60947-2, GB/T 14048.2

Applications:

• Industrial power distribution systems

• Main switchboards in factories

• Generator and transformer protection

• High-load commercial facilities

• HVAC, motors, and large machinery circuits

• Infrastructure & utility-grade panels