Product Description:
The CHINT NXM-630S/4300 630A 4-Pole MCCB is a top-tier molded case circuit breaker built to handle large-scale three-phase + neutral (4P) electrical systems. With a rated current of 630A and a short-circuit breaking capacity of 36kA at 400V, this breaker delivers uncompromising protection for critical installations in industrial plants, data centers, power networks, and commercial infrastructures.

Its fixed thermal-magnetic trip unit ensures reliable response to overloads and short circuits, while the 4-pole configuration guarantees safe disconnection of all conductors, including neutral. Built on the durable NXM-630 frame, this MCCB supports high-load installations with confidence and compliance.

Key Features:

• ✅ Rated Current: 630A

• ✅ Poles: 4P (3-phase + Neutral)

• ✅ Breaking Capacity: 36kA at 400/415V

• ✅ Voltage Rating: 800V AC (Ui)

• ✅ Trip Unit: Fixed thermal-magnetic

• ✅ Test Button: Push-to-trip function

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

• ✅ Heavy-duty NXM-630 Frame for high power systems

Technical Specifications:

• Model: NXM-630S/4300

• Rated Current (In): 630A

• Poles: 4P

• Rated Insulation Voltage (Ui): 800V

• Rated Impulse Voltage (Uimp): 8kV

• Rated Operating Voltage (Ue):

  • 230V: 50kA

  • 400V: 36kA

  • 415V: 36kA

• Breaking Capacity (Icu/Ics):

  • 230V: 50kA / 30kA

  • 400V: 36kA / 20kA

• Frequency: 50Hz / 60Hz

• Operating Temp: -25°C to +70°C

• Mounting: Fixed, front-connected

Applications:

• Main switchboards and distribution panels

• Industrial automation centers

• Power stations and substations

• Backup generator systems

• High-load commercial facilities

• Data center power management

• Systems requiring full neutral isolation