Please enter keywords to search

Global |EN

Choose your country & Language

Asia Pacific

Australia & New Zealand
India
Indonesia
Korea
Malaysia
Singapore (Sunlight)
Vietnam

Middle East & Africa

CHINT-EGEMAC
South Africa
UAE

Europe

Italy
Spain
Turkey
Kazakhstan

North America

Mexico

Latin America

Brazil
Peru
Ecuador

Choose your country & Language

Australia & New Zealand
India
Indonesia
Korea
Malaysia
Singapore (Sunlight)
Vietnam
CHINT-EGEMAC
South Africa
UAE
Italy
Spain
Turkey
Kazakhstan
Mexico
Brazil
Peru
Ecuador

Please enter keywords to search

Your search term contains restricted words. Please use different keywords.

How to Read the Nameplate of Miniature Circuit Breaker

FEBRUARY 29, 2024

How to Read the Nameplate of Miniature Circuit Breaker 2024 0229 1
How to Read the Nameplate of Miniature Circuit Breaker 2024 0229 1
How to Read the Nameplate of Miniature Circuit Breaker-2024-0229-1

Table of Contents

  1. Significance of Correctly Reading the Miniature Circuit Breaker Nameplate
  2. Nameplate Information Breakdown
  3. Products Highlight: NB1 and NXB Miniature Circuit Breakers
  4. Conclusion

miniature circuit breaker (MCB) offers excellent protection to electrical circuits. It prevents damage from short-circuits and overloads in homes, commercial properties, and many other settings. Used commonly in buildings, MCBs provide circuit protection while functioning as switches for loads. They are compact and compatible with distribution boards. With their widespread usage, electricians and homeowners should learn to correctly read the nameplate information of MCBs to ensure safe installation and operation.

Significance of Correctly Reading the Miniature Circuit Breaker Nameplate

The nameplate of a miniature circuit breaker contains crucial technical specifications that define its intended use and safety ratings. Incorrectly identifying these details can compromise the protection of circuits and electrical loads. Installers need to verify that the MCB selected matches the circuit requirements in terms of voltage, current, and breaking capacity.

 

Homeowners also need to understand the nameplate to properly maintain the MCB products in their electrical panels. Misreading technical markings could potentially lead to overloading, short-circuiting, and safety hazards over time.

Nameplate Information Breakdown

Let’s break down the key nameplate information using the popular CHINT NB1-63 miniature circuit breaker as an example:

How to Read the Nameplate of Miniature Circuit Breaker 2024 0229 2
How to Read the Nameplate of Miniature Circuit Breaker 2024 0229 2
How to Read the Nameplate of Miniature Circuit Breaker-2024-0229-2

Brand Name

The brand name “CHINT” occupies the top-left corner. This clearly identifies the manufacturer who designed, tested, and warrants the performance of the circuit breaker.

Product Name

Located centrally below the brand name is the product name “NB1-63,” which precisely labels the miniature circuit breaker model. Electricians can reference this when looking up technical documentation or spare parts.

Order Code

On the top-right side, the vertically aligned order code “180277” allows accurate traceability and re-ordering if needed.

Tripping Curve and Rated Current

Represented as “C10”, the tripping curve “C” refers to the current-time characteristics for tripping during overloads or faults. The “10” is the rated current value. It specifies the maximum load current this breaker is rated to protect, i.e., 10A.

Rated Operational Voltage

The operational voltage rating of “230/400V” covers single and three-phase power system voltages to ensure safe interruption under normal or fault conditions.

Ultimate Breaking Capacity

As “6000”, this value confirms the breaker can reliably clear severe short-circuit faults without damage or hot gas emission.

Energy Class

The number “3” denotes the energy absorption capability during tripping to minimize arcing and spatter for user safety.

Certification Number

Listed as “IEC/EN 60898-1”, this certification verifies that the miniature circuit breaker complies with international product standards for construction and performance testing.

Operational Symbol

Located graphically on the right side, the status symbol provides an at-a-glance indication outside of the distribution board for isolation verification.

Products Highlight: NB1 and NXB Miniature Circuit Breakers

Founded in 1984, CHINT is a global leader in smart energy solutions. Over the past 4 decades, the company has focused on industry and brand building through “Green Energy, Intelligent Electric and Smart Low-carbon” segments. The company has manufacturing bases in 16 countries. It provides dependable energy solutions for sustainable development.

 

Two of its top products in the miniature circuit breaker category include:

NB1 Miniature Circuit Breaker

The NB1 MCB series can protect general lighting and power circuits. The key features of this CHINT MCB include:

  • An ultimate breaking capacity of 10kA and energy limitation class 3
  • Functions fast closing with extended service life
  • Clear ON/OFF visual indication of the circuit status
  • Facilitates easy installation and connection
  • Equipped with ventilation slots for effective heat dissipation
  • Can be assembled with S9、V9、OUVT-1、XF9、XF9J accessories

NXB Miniature Circuit Breaker

  • The NXB miniature circuit breaker series is the star of MCBs. Its key characteristics include:
  • Robust construction and narrow DIN rail mounting design for industrial and commercial use
  • Provides ultra-long mechanical and electrical life for unwavering safety
  • Feature a 10mA earth leakage protection capability
  • Fast-acting magnetic trip element ensures maximum protection of circuits

Conclusion

Understanding nameplate markings helps ensure that you carefully select and install MCBs for safe and reliable protection. CHINT has nearly four decades of experience in smart energy solutions and a global presence supported by strong R&D. Homeowners and professionals alike can rely on CHINT’s MCBs to efficiently distribute power while preventing hazards from overloads or short circuits. For more information on CHINT’s full portfolio of electrical distribution products, visit the company’s website.

The Latest
MARCH 26, 2025 CHINT 36/40.5kV Ring Main Unit: Empowering New Energy Applications with Innovative Solutions

CHINT Ring Main Unit not only solves the technical and environmental challenges, but also improves operational efficiency and profitability for customers.

MARCH 21, 2025 Single Phase vs Three Phase Voltage Regulator

This article explains the differences between single phase voltage regulators and three phase voltage regulators.

MARCH 18, 2025 Miniature Circuit Breaker: Understanding UL 489 and UL 1077

This article specifies the key differences between UL 489 and UL 1077, helping choose suitable Miniature Circuit Breakers.

MARCH 17, 2025 IEC vs. UL: Understanding Air Circuit Breaker Certification Standards

Compare IEC vs UL certification for air circuit breakers: regional standards, safety compliance, and CHINT's globally certified solutions for reliable electrical protection.

MARCH 5, 2025 Guide to Air Circuit Breaker Maintenance

This guide discovers essential inspection, cleaning, and testing procedures of the air circuit breaker to prevent failures and extend equipment lifespan.

FEBRUARY 26, 2025 The Basics of NVF2L Compact Micro Drive

NVF2L Compact Micro Drive is designed to meet the growing demand for efficient, space-saving solutions in various industrial applications. Explore CHINT's industrial drive technology solutions.

FEBRUARY 21, 2025 Key Differences Between Air Insulated Substations and Gas Insulated Substations

Common types of switchgear used in substations are AIS and GIS. This article will assess the primary difference between AIS and GIS substations for five critical aspects.

FEBRUARY 20, 2025 Fuses vs Circuit Breakers: Pros and Cons You Need to Know

Discover the key differences between fuses and circuit breakers, their pros and cons, and which is best for your electrical needs.

FEBRUARY 18, 2025 How to Install NWK1-G Reactive Power Compensation Controller

This guide explores the precise installation steps of NWK1-G Reactive Power Compensation Controller.

FEBRUARY 18, 2025 How to Install NXJ Miniature Power Relay

This comprehensive guide provides an installation guide and aims to help you ensure optimal functionality and longevity of your NXJ device.