Product Description:
The CHINT NXM-1000H/4300 4-Pole 1000A MCCB is engineered for the most demanding power distribution networks, providing safe and reliable protection for high-load three-phase + neutral (4P) electrical systems. Designed on the NXM-1000 frame, it supports critical applications such as substations, large-scale commercial facilities, heavy industries, and backup generator systems.

With a rated current of 1000A and breaking capacity of 50kA at 230V / 36kA at 400V, it is equipped with a fixed thermal-magnetic trip unit and built to meet IEC/EN 60947-2 international standards. The 4-pole configuration ensures full isolation of phases and neutral, ideal for balanced systems requiring safe and complete disconnection.

Key Features:

• ✅ Rated Current: 1000A

• ✅ Poles: 4P (3-phase + Neutral)

• ✅ Breaking Capacity: 50kA @ 230V / 36kA @ 400V

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

• ✅ Trip Unit: Fixed thermal-magnetic

• ✅ Push-to-Trip Test Button

• ✅ Frame: NXM-1000 – Built for high-power networks

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

Technical Specifications:

• Model: NXM-1000H/4300

• Rated Current (In): 1000A

• Poles: 4P

• Rated Insulation Voltage (Ui): 800V

• Impulse Voltage (Uimp): 8kV

• Rated Operating Voltage (Ue):

  • 230V: 50kA

  • 400V: 36kA

  • 415V: 36kA

• Breaking Capacity (Icu/Ics):

  • 230/240V: 50kA / 30kA

  • 400/415V: 36kA / 20kA

• Frequency: 50/60Hz

• Mounting: Fixed, front-connected

• Operating Temperature: -25°C to +70°C

• Trip Type: Thermal-magnetic (non-adjustable)

Applications:

• Utility substations

• Generator and transformer protection

• Large-scale commercial buildings

• High-capacity backup systems

• Industrial automation networks

• Electrical distribution panels requiring neutral control