NSX Series MCCB

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MT-NSX 3/4P 100A-1600A AC Molded Case Circuit Breaker for Industrial & Commercial Distribution

The MT-NSX series molded case circuit breakers (MCCBs) provide reliable and versatile protection for low-voltage electrical systems, widely adopted in industrial plants, commercial buildings, and critical infrastructure projects. Designed for both safety and efficiency, these breakers deliver consistent performance under demanding operational conditions.

 

Key Features:

High Interrupting Capacity – Effectively cuts off short-circuit and overload currents, safeguarding equipment and maintaining operational safety.

 

Flexible Modular Design – Compatible with various functional modules such as residual current protection and communication interfaces, allowing adaptation to specific applications.

 

Accurate Overcurrent Protection – Equipped with thermal-magnetic or electronic trip units to precisely respond to overloads, short circuits, and ground faults.

 

Compact Form Factor – Space-efficient construction suits high-density distribution boards and control panels.

 

Smart Connectivity – Supports monitoring and control through communication modules like Micrologic, enabling remote management and energy monitoring.

 

Durability and Reliability – Made from premium materials with advanced production techniques, ensuring long service life and consistent performance.

 

Applications

The MT-NSX MCCB is an essential component for protecting electrical circuits and connected equipment. Its adjustable trip settings and robust interruption capability make it suitable for selective coordination in complex electrical networks. Typical applications include:

Main power distribution boards and panels

Motor control centers and starter panels

Generator and backup power protection

Industrial machinery power supply systems

Commercial and office building electrical circuits

Renewable energy systems, including solar and wind installations

 

These breakers are ideal for a variety of loads, from standard lighting and outlet circuits to demanding motor loads. They prevent electrical hazards, reduce equipment damage, and minimize downtime, making them indispensable for modern electrical infrastructure.

 

Quick Details / Keywords

MCCB Types: Molded Case Circuit Breaker, Load Break Switch, Thermal-Magnetic Breaker, Motor Protection Circuit Breaker

Configurations: 3P / 4P, 100A–1600A

Protection Features: Overcurrent, Short-Circuit, Ground Fault

Applications: Industrial, Commercial, Utility, Renewable Energy

Function: Circuit Protection, Electrical Isolation, Load Switching

  • Working Principle
  • Quality Explanation
  • Product Features
  • Installation & Commissioning
  • Packaging & Shipping
  • Project Cases
  • Product Selection Guide
Product Accessories

Place of Origin:

5th Floor, No. 3, Jinghong West Road, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province

Brand Name:

MINGTUO

Model Number:

MCCB MSX-160

Certification:

IOS  CE  ROHS

Minimum Order Quantity:

1

Price:

20$

Packaging Details:

Wooden box packaging

Delivery Time:

Within fifteen days

Payment Terms:

100% prepaid, 70%/30%, 80%/20%

Supply Ability:

Available at any time

 

Item No. NSX100-250 NSX400-630
Number of poles 3P, 4P
Control Manual with togglewith direct or extended rotary handle
Connections Fixed front connections
Fixed Plug-in front connections/rear connections
Electrical characteristics (per IEC60947 and EN60947-2)
Rated current In(A) 16,25,32,40,50,63,80,100,125,160,200,250 400,500,630
Rated insulation voltage Ui(V) 800
Rated impulse withstand voltage Uimp(kV) 8
Rated operational voltage Ue(V) AC 50/60Hz,690
Utilization category A
Breaking capacity levels F、N、H
Breaking capacity (kA rms) AC 50/60 Hz 380/415 V Icu 36, 50, 70
Service breaking capacity (kA rms) AC 50/60 Hz 380/415 V Ics 36, 50, 70
Operation performance Mechanical 20000 10000
Electrical 10000 5000
Protection TMD, Micrologic
Indication and control auxiliaries
Auxiliary switch
MX Shunt coil
MN under-voltage coil

Model MTEZC-100 MTEZC-125 MTEZC-250 MTEZC-400 MTEZC-630
Shell current Inm(A) 100A 125A 250A 400A 630A
Rated working voltage Ue(v) AC415/550V
Rated Insulating Voltage Ui(v) 690V
Rated impulse withstand voltage Uimp(kv) 6kV
Number of poles 2P / 3P / 4P 3P 2P / 3P / 4P 3P / 4P 3P / 4P
Rated limit short-circuit breaking capacity Icu (kA) o-co 415V

30-100 / 7.5-100

10-100 36-85 / 18-85 36-70 36-70
550V 10-20 / 2.5-20 5-20 10-25 / 5-25 36-50 36-50
Rated running short-circuit breaking capacity Ics (kA) 110-400V 50%ICU / 25-50%ICU 50%ICU 50%ICU / 50%ICU 100%(220-415V) 100%(220-415V)
415-550V 25%ICU / 25-50%ICU 50%ICU 50%ICU / 50%ICU 50%(440V) 50%(440V)
Durability Mechanical 13000 13000 10000 10000 10000
Electrical 4000 4000 5000 4000 3000
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Zhejiang Mingtuo Electrical Technology Co., Ltd.
Zhejiang Mingtuo Electrical Technology Co., Ltd.
Zhejiang Mingtuo Electrical Technology Co., Ltd. is a technology-driven enterprise specializing in the research, development, and manufacturing of low-voltage and medium-voltage circuit breakers. Leveraging Liushi's comprehensive electrical industry chain and local advantages, we provide reliable and safe electrical protection products along with customized solutions for global industrial, commercial, and residential power distribution systems. We are committed to becoming a trusted electrical protection partner for global customers through professional engineering capabilities, consistent manufacturing quality, and flexible customization services.
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