4 Pole Miniature Circuit Breakers
Our 4 Pole MCB Series offers versatile circuit protection solutions with configurable pole options (1P to 4P), current ratings from 1A to 125A, and trip characteristics (Type B/C/D) to suit diverse electrical systems. Engineered for reliable overload and short-circuit protection, these MCBs feature compact design and seamless integration into residential, commercial, and industrial distribution networks.
CNC MCB
The YCB7-125N Miniature Circuit Breaker (MCB) is designed for AC 50/60Hz circuits with rated voltage up to 400V and rated current ranging from 10A to 125A, providing overload and short-circuit protection. Suitable for industrial, commercial, high-rise, and residential applications.
Key Features:
High flame retardancy, heat resistance, and impact resistance.
6000A short-circuit breaking capacity.
Contact indication window for easy ON/OFF status monitoring.
Core Specs:
Compliance: IEC 60947-2, IEC 60898-1.
Poles: 1P/2P/3P/4P.
Rated voltage: AC230V/400V (1P/2P), AC400V (3P/4P).
Thermo-magnetic release: Type C (8In) or D (12In).
Insulation voltage: 500V; impulse withstand voltage: 6kV.
Installation: DIN rail EN 60715 (35mm).
Solution
We provide our customer with profitable growth by offering integrated comprehensive electrical solution.
Bulk Wholesale
Global supply chain support with competitive pricing for large quantity orders. Dedicated account managers and flexible delivery terms.
WhatsApp: +8618958711903 E-mail: marcom@cncele.comOEM Partnership
Custom manufacturing solutions tailored to your brand requirements with strict quality control and confidential production.
Dealer Network
Join our global dealer program with exclusive territories, marketing support, and technical training resources.
Relevant Case
Angola's Natural Gas Processing Plant Project
Donglin Cement Plant Electrical Distribution System Upgrade
Nigeria Water Pump Control Solution Project
Nikopol Ferroalloy Plant Electrical Upgrade
Nikopol Ferroalloy Plant Upgrade
Project Introduction for Bulgarian Factory Electrical Project
FAQ
Here are concise FAQ responses for the 4 Pole MCB series:
What is 4 pole in MCB?
A 4-pole MCB refers to a miniature circuit breaker with four separate current-carrying poles, designed to disconnect all three phase conductors and the neutral line simultaneously during tripping or manual operation.
What is a 4 pole breaker used for?
4-pole breakers are primarily used in three-phase electrical systems to provide complete isolation of all conductors (phases + neutral). They are ideal for sensitive equipment, industrial machinery, or installations requiring neutral line protection, ensuring enhanced safety during maintenance or fault conditions.
What is the difference between 4 pole MCB and TPN?
A 4-pole MCB switches all four conductors (3 phases + neutral), while TPN (Three Pole and Neutral) breakers typically switch the three phases but leave the neutral line permanently connected. 4-pole designs offer full isolation, whereas TPN focuses on phase-only protection.
What is the difference between 2 pole and 4 pole MCB?
2-pole MCBs control two conductors (line + neutral) for single-phase systems (common in residential use), while 4-pole MCBs manage three phases + neutral for three-phase applications (industrial/commercial settings). The key distinction lies in the number of conductors isolated and their intended electrical system type.
What is the lead time for MCB orders?
Lead time varies by region: typically 1–2 weeks for standard models. Custom orders may take 3–4 weeks. Contact sales for exact timelines.
Do you support OEM for MCB products?
Yes, we offer OEM services, including custom branding, packaging, and specifications tailored to your needs.
What certifications do your MCBs have?
Our MCBs comply with global safety standards (e.g., IEC, CE) to ensure reliability and regulatory compliance.
How to contact a distributor for MCB purchases?
For local distributor info or bulk inquiries, please contact our sales team via email (cncele@cncele.com) or WhatsApp (+86 18958711903).
CNC=CREATE+NEW+CENTURY
Hi, I run a business in Portugal and I’m interested in bringing CNC Electric to my market. Do you already have a distributor here? If not, I’d love to explore the possibility of working together as a distributor.
Could you share some details on pricing, logistics support, and any certification requirements? Also, do you offer exclusive distribution agreements?
——Gonçalo Batalha
Olá, tenho uma empresa em Portugal e estou interessado em trazer a CNC Electric para o meu mercado. Vocês já têm um distribuidor aqui? Caso contrário, gostaria de explorar a possibilidade de trabalhar como distribuidor.
Poderiam compartilhar detalhes sobre a política de preços, suporte logístico e requisitos de certificação? Além disso, oferecem acordos de distribuição exclusiva?
——Gonçalo Batalha
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I would like to have an online meeting with you to introduce our company and business models so if you are interested we will visit your factory to complete a mutual assessment and move forward with cooperation as per the agreed business model——Abdulrahman Al-Faisal
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Dear CNC Electric Team, We’re bidding for the Kenya National Grid Expansion Project, and your products align with the technical requirements in the tender.
Could you share the necessary certifications, technical datasheets, and details on after-sales support? Also, do you offer any special commercial support for large-scale government projects in Africa?
——Joseph Otieno
Dear CNC Electric Team, We are a renewable energy company based in Brazil, specializing in solar power projects for industrial and commercial applications. We’re looking for reliable electrical solutions for our photovoltaic installations.
Does CNC Electric offer DC MCB, MCCB, RCCB, or fuses designed for solar applications? Additionally, do you provide technical support, local certifications, or customized solutions for large-scale solar projects? If you have any successful case studies in this sector, we’d love to review them.
——Lucas Oliveira
Olá, Somos uma empresa de energia renovável com sede no Brasil, especializada em projetos solares para aplicações industriais e comerciais. Estamos em busca de soluções elétricas confiáveis para nossas instalações fotovoltaicas.
A CNC Electric oferece disjuntores DC MCB, MCCB, RCCB ou fusíveis projetados para aplicações solares? Além disso, vocês fornecem suporte técnico, certificações locais ou soluções personalizadas para projetos solares de grande escala? Se tiverem estudos de caso bem-sucedidos nesse setor, gostaríamos de analisá-los.
——Lucas Oliveira
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——Miguel Sánchez
Hola,Soy instalador eléctrico en España y estoy interesado en utilizar los productos de CNC Electric en mis proyectos. Me gustaría obtener más información sobre el Wifi Breaker, sus aplicaciones, especificaciones técnicas y precio.¿Podrían enviarme un catálogo de productos, lista de precios y disponibilidad de stock? Además, ¿ofrecen formación técnica para la instalación?
—Miguel Sánchez
