High Quality Circuit Breaker Supplier in China

A circuit breaker is a device used in low-voltage distribution systems to protect circuits. Its function is to automatically and quickly cut off the current when faults such as overload and short circuit occur in the circuit, to prevent wire overheating, equipment damage and even electrical fires, thereby ensuring personal and property safety.

According to their breaking capacity, application scenarios and structural features, they are mainly classified into three categories: miniature circuit breakers, molded case circuit breakers and universal circuit breakers.

Miniature circuit breaker

Miniature circuit breakers are the most fundamental components applied in terminal distribution circuits. The rated current is usually below 63A, and it adopts a standard modular design, supporting quick installation on rails.

Molded case circuit breakers

The casing is made of engineering plastic, with a wide rated current coverage range and higher breaking capacity. This product seals the operating mechanism, contact system, etc. within a plastic casing, providing higher safety and supporting additional modules (such as auxiliary contacts, undervoltage trip units).

Universal circuit breaker

Also known as frame-type circuit breaker (ACB), its rated current can reach over 6300A, featuring extremely high breaking capacity and protection functions. Adopt a modular frame structure.

Comparison and Selection

	Miniature Circuit Breaker	Molded case Circuit Breaker	Universal Circuit Breaker
Current range	≤ 63A	16A - 1600A	630A - 6300A+
Scope of use	Terminal loop protection	Intermediate level/equipment level protection and power distribution	Main incoming line/busbar protection and system management
Selection requirements	Number of circuits, number of poles, and instantaneous tripping characteristics	Load type, breaking capacity, and whether accessories are needed	System short-circuit capacity, selective coordination, and intelligent requirements

Why choose us?

We are a source factory located in China, capable of providing a full range of products from miniature circuit breakers, molded case circuit breakers to universal circuit breakers. Our value lies in:

Professional selection support: According to your needs, our engineer team will recommend the suitable circuit breaker model for you.

Fast response and delivery: We have stable cooperation with various international logistics providers and can quickly deliver products to your hands.

We’re here to be your go-to partner for electrical protection, giving your electrical systems a solid and safe foundation with our reliable products.

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Small Leakage Protection Device 63A3P

A 3p leakage protection circuit breaker with a rated current of 63A produced by China Ouyue Electric Co., Ltd. provides reliable personal safety and fire protection for residential and light commercial power distribution systems. Small Leakage Protection Device 63A3P adopts sensitive electromagnetic tripping technology, which can quickly cut off the power supply when a leakage fault occurs in the circuit, effectively preventing electric shock accidents and electrical fires. It features rail installation, adjustable leakage action current in multiple Settings, and has passed CE certification. Factory direct supply ensures stable quality.

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Small Leakage Protection Device 63A2P

A Small Leakage Protection Device 63A2P by China Ouyue Electric Co., Ltd. is specially designed for the safety protection of power supply systems. When a leakage fault occurs in the circuit, the product can quickly cut off the phase line and the neutral line, providing safety protection. It is suitable for branch protection of residential buildings, shops and small single-phase equipment, in compliance with relevant safety standards. Factory direct supply ensures stable quality.

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Small Circuit Breaker 2P

The Small Circuit Breaker 2P is a circuit protection device used in low-voltage distribution systems. It can quickly cut off the power supply when the current is overloaded or short-circuited, and automatically disconnect when the current is too large, preventing the danger caused by line overload. It is often used in sockets where high-power electrical appliances are used, main power switches, etc.

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Small Circuit Breaker 1P

Small Circuit Breaker 1P are fundamental protective devices in the field of low-voltage distribution. Their core function lies in real-time monitoring of the current status of the line. Once abnormal situations such as overload or short circuit occur, they can act instantly and cut off the circuit, thereby avoiding risks such as overheating of wires, equipment damage, and even electrical fires caused by excessive current.

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Universal Circuit Breaker Drawer Type 6300A 3P

The Universal Circuit Breaker Drawer Type 6300A 3P adopts a drawer-type plug-in structure. When the fixed circuit breaker body is installed into the dedicated drawer seat, it becomes the Universal Circuit Breaker Drawer Type 6300A 3P. It enables the circuit breaker to be installed, tested and replaced quickly. We can offer both in-stock and customized services.

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Universal Circuit Breaker Fixed Type 3200A 3P

The Universal Circuit Breaker Fixed Type 3200A 3P product is a device used for core protection in power distribution systems. It adopts an integrated fixed installation structure, with the circuit breaker body directly assembled within the frame of the distribution cabinet. This product is suitable for long-term operation power distribution scenarios, such as critical circuit loop protection in fixed power distribution and main power distribution cabinets of infrastructure.

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Universal Circuit Breaker Fixed Type 2000A 3P

The Universal Circuit Breaker Fixed Type 2000A 3P is suitable for use in distribution networks to distribute electrical energy, protect lines, and prevent faults such as overvoltage, undervoltage, short circuit, and single-phase grounding of power equipment. This product features an intelligent protection function for electrical appliances, preventing unnecessary power outages.

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Enclosed Circuit Breaker 630A 3P

Enclosed Circuit Breaker 630A 3P are electrical devices used to protect low-voltage distribution systems from situations such as circuit overload and short circuit. The product shell is made of high-strength engineering plastics and arc-resistant materials. It is widely applied in industrial control cabinets and building distribution boxes. The product can be modularly installed according to the time situation.

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Ouyue is a professional Circuit Breaker manufacturer and supplier in China. Welcome to import quality products from our factory here.

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