Product Description:
The CHINT NXM-250S/4300 160A 4-Pole MCCB is a robust molded case circuit breaker designed for protecting three-phase + neutral (4P) electrical systems. Rated for 160A and built to handle short-circuit breaking up to 36kA at 400V, it offers reliable performance in industrial, commercial, and heavy-duty applications.

Equipped with a fixed thermal-magnetic trip unit, this MCCB ensures fast and dependable protection against overloads and short circuits. The 4-pole design ensures full disconnection of all phases and neutral, making it a perfect choice for critical loads where neutral isolation is required.

Key Features:

• ✅ Rated Current: 160A

• ✅ 4 Poles (3P + Neutral) for balanced and complete protection

• ✅ Breaking Capacity: 36kA at 400V

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

• ✅ Trip Unit: Fixed thermal-magnetic

• ✅ Test Button: Manual push-to-trip function

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

• ✅ Compact NXM-250 Frame Size – Ideal for space-saving panel design

Technical Specifications:

• Model: NXM-250S/4300

• Rated Current (In): 160A

• Poles: 4P (Three-phase + Neutral)

• Rated Insulation Voltage (Ui): 800V

• Rated Impulse Voltage (Uimp): 8kV

• Operating Voltage (Ue):

  • 230V: 50kA

  • 400V: 36kA

  • 415V: 36kA

• Breaking Capacity (Icu/Ics):

  • 230/240V: 50kA / 30kA

  • 400/415V: 36kA / 20kA

• Frequency: 50/60Hz

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

• Mounting: Fixed (front-connected)

• Frame Size: NXM-250

Applications:

• Industrial and commercial switchboards

• Backup generator or UPS connections

• Power panels for HVAC, motors, lighting

• Neutral-sensitive electrical systems

• Data centers, factories, utilities