1P Miniature Circuit Breaker

1P Miniature Circuit Breaker

1. Product Advantages: The 1P miniature circuit breakers produced by SDKC are compact, convenient, safe, reliable, energy - saving, environmentally friendly, and durable. They provide you with high - quality circuit breakers, and these high - quality ones ensure your electrical safety.

2. Design Features: They have a full range of current specifications, high breaking capacity, and are suitable for high and low - temperature environments. The flame - retardant material makes them safer. They have precise protection characteristics, a small size, a fast closing speed, and a long mechanical and electrical life.

3. Installation Category: This circuit breaker is of the embedded type. The back adopts a tight - clamping guide rail, making wiring convenient and reliable. It can be equipped with various accessories, enabling easy function expansion and modularization, and can be combined arbitrarily.

4. Main Structure and Working Principle: The circuit breaker is mainly composed of a shell, an operating mechanism, an instantaneous release, and an arc extinguishing device. The moving contact of the circuit breaker can only stay in the closed or open position; the moving contacts of a multi - pole circuit breaker should adopt mechanical linkage, so that each pole can be closed or opened at the same time; when installed vertically, when the handle moves upward, the contact moves in the closing direction.

Attached is the product structure and appearance diagram

Installation Method：

It is installed using a TH35 - 7.5 steel mounting rail.

It has an isolation function and can be used as an isolating switch to disconnect the line, facilitating the maintenance of lines and equipment.

1. Short - circuit Protection: In case of a short circuit, the miniature circuit breaker can quickly cut off the circuit to avoid dangers such as fire.

2. High Safety: The miniature circuit breaker has good insulation performance, which can effectively prevent electric shock and electric arc, improving the safety of use.

3. Economical and Practical: Our miniature circuit breakers are reasonably priced, have a long service life, low maintenance costs, and high cost - performance.

4. Environmental Protection and Energy Saving: The miniature circuit breakers are made of environmentally friendly materials, meeting the requirements of modern energy conservation and environmental protection.

5. Various Specifications: They are available in a variety of current and breaking capacity specifications to meet the requirements of different electrical systems.

6. Compact and Convenient: With a compact structure, they occupy little space, making them easy to install in places with limited space such as distribution boxes, and suitable for various complex wiring environments.

Q: What is the difference between a 1P miniature circuit breaker and a 2P miniature circuit breaker?

A: A 1P miniature circuit breaker only controls one live wire and is used to protect the live wire in a single - phase circuit from overload and short - circuit faults. The neutral wire is directly connected without being controlled by the circuit breaker;

a 2P miniature circuit breaker can control both the live wire and the neutral wire, and can cut off both in case of a fault, which is safer. It is suitable for scenarios that require disconnecting the bipolar power supply at the same time, such as electric water heaters, air conditioners and other high - power equipment.

Q: How to choose the tripping characteristics (Type B/C/D) in a 1P miniature circuit breaker?

A: Type B: The tripping current is 3 - 5 times the rated current. It is sensitive to short - circuit current and suitable for purely resistive loads (such as incandescent lamps, electric heaters). It can quickly cut off the circuit in case of a short circuit.

Type C: The tripping current is 5 - 10 times the rated current. It is suitable for common mixed loads (such as mixed lighting and socket circuits). It can withstand a certain impact current to prevent false tripping when the equipment starts.

Type D: The tripping current is 10 - 14 times the rated current. It is suitable for loads with large impact currents, such as motors and transformers, but is rarely used in ordinary household circuits.

Q: Can a 1P miniature circuit breaker be used with a residual current device?

A: Yes, and it is widely used in household circuits. Usually, a 1P miniature circuit breaker is used with a 1P + N or 2P residual current device. The 1P miniature circuit breaker is responsible for overload and short - circuit protection, and the residual current device is responsible for detecting leakage current (if it exceeds 30mA). They work together to protect line equipment and ensure personal safety.

Q: What should be noted when installing a 1P miniature circuit breaker?

A: When installing, the following points should be noted:

1. Wiring Direction: Clearly marked "upper inlet and lower outlet", that is, the live wire of the power supply is connected from the upper inlet terminal, and the lower outlet terminal is connected to the load. Reversing the connection may affect the tripping performance or cause false actions.

2. Neutral Wire Handling: The neutral wire does not pass through the 1P miniature circuit breaker and needs to be directly connected to the neutral busbar or to the neutral terminal of the load to ensure the smoothness of the neutral circuit.

3. Combined Installation: When installing in a distribution box, it should be reasonably arranged with other miniature circuit breakers, residual current protection switches, etc., and sufficient space should be reserved for easy wiring and maintenance.

Q: What is needed for a detailed quotation?

A: Please inform us of the current, voltage, number of poles, special requirements, etc.

Q: How about technical support?

A: We will provide you with product manuals or video guidance, and our professional technical engineers can communicate with you at any time.

Q: What is your delivery time?

A: According to your order quantity and technical requirements, generally, for conventional products, delivery will be completed within 12 days after receiving the deposit.

We have advanced automatic circuit breaker production lines and manufacturing processes to ensure precision and efficiency. We believe that our professional knowledge and experience in the industry can provide the best products to meet your needs. Choose us, and you will be satisfied.

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