Name: NB8-125 Moulded Case Circuit Breaker
Brand: Chint

NB8-125 Moulded Case Circuit Breaker

The NB8-125 Moulded Case Circuit Breaker (MCCB) is engineered for reliable protection and isolation in low-voltage distribution systems up to AC 415V/DC 220V and 125A. It safeguards against overload, short-circuit, and insulation faults in commercial, residential, and light industrial applications. Built to IEC 60947-2 and GB/T14048.2 standards, the NB8-125 combines compact size, thermal-magnetic tripping, and high endurance — ensuring long-term performance and operational safety.

Need Support From Us?

Blog

Find expert perspectives on the trends and technologies driving your business.

View Now

Download Center

Download new and previously released documents including product document, solutions, cases, coporate report.

View Now

Reach out to us to receive more information, technical support, assistance with complaints and more.

Collapsed

Expand

FAQs

What applications is the NB8-125 MCCB suitable for?

It’s designed for low-voltage distribution systems in commercial buildings, residential facilities, and general industries, providing reliable overload and short-circuit protection up to 125A.

What are the main tripping curves available?

The NB8-125 offers C and D curves:

Curve C: For resistive and mixed loads (motors, lighting).

Curve D: For highly inductive loads or motors with high inrush current.

What environments can the NB8-125 operate in?

It operates safely between −35°C and +70°C, at altitudes up to 2000 meters, and withstands humidity up to 95%, ensuring performance even in harsh conditions.

Is the NB8-125 compatible with accessories?

Yes, it supports multiple CHINT accessories, including S9, V9, XF9, XF9J signal and auxiliary contacts, and OVT-1/OUVT-1 voltage releases, for enhanced control and monitoring.

How long is the operational lifespan?

The NB8-125 offers 20,000 mechanical and 10,000 electrical operations, ensuring long-term durability with minimal maintenance needs.

Please enter keywords to search

Choose your country & Language

Asia Pacific

Middle East & Africa

Europe

Latin America

North America

Choose your country & Language

Please enter keywords to search

NB8-125 Moulded Case Circuit Breaker

Product Information

Need Support From Us?

FAQs

NB8-125 Moulded Case Circuit Breaker

Product Information

Related Products

Need Support From Us?

FAQs