Product Description:
The CHINT NM8N-1600S TM1600 4B is a top-tier 4-pole molded case circuit breaker (MCCB) designed to provide maximum protection for high-capacity power distribution systems. With a rated current of 1600A, it is engineered to handle the most demanding loads across industrial, commercial, and utility-grade installations.

This MCCB features a fixed thermal magnetic trip unit that ensures precise overload and short-circuit protection. The 4-pole configuration guarantees simultaneous disconnection of all three phases and neutral, offering full protection for three-phase systems with a neutral conductor.

Built on the rugged NM8N-1600S frame, the breaker delivers high breaking capacity, making it ideal as a main incomer breaker in large electrical installations, generator outputs, and transformer panels.

Key Features:

• ✅ Rated Current: 1600A

• ✅ Poles: 4P (3-phase + Neutral)

• ✅ Trip Type: Fixed Thermal Magnetic (TM)

• ✅ Frame Size: NM8N-1600S

• ✅ High Breaking Capacity for heavy-duty applications

• ✅ Mounting: Fixed-mounted (4B)

• ✅ Compliant with IEC/EN 60947-2

• ✅ Robust design for industrial-grade reliability

Technical Specifications:

• Model: NM8N-1600S TM1600 4B

• Rated Operational Voltage (Ue): Up to 690V AC

• Rated Insulation Voltage (Ui): 1000V

• Impulse Withstand Voltage (Uimp): 8kV

• Rated Frequency: 50/60Hz

• Breaking Capacity:

  • Up to 85kA depending on system voltage

• Trip Unit: Fixed Thermal Magnetic

• Installation Type: Fixed (4B)

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

• Protection Class: IP20 (internal)

Applications:

• Main incoming breakers for LV panels

• Industrial generator and transformer outputs

• Large HVAC and mechanical distribution boards

• Utility-grade and infrastructure-level systems

• Critical facilities and large-scale commercial buildings