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SDKC High-quality circuit breaker manufacturer

 

 

SHANDONG KAICHUAN POWER EQUIPMENT COMPANY LTD. is a leading circuit breaker manufacturer in China. We specialize in the production of small circuit breakers, molded case circuit breakers, and high-current intelligent circuit breakers. Verified by well-known certification agencies, reliability is ensured and in compliance with international standards.

 

Advantages of circuit breaker production
 

Quality Assurance

All raw materials we use are inspected by professional quality inspection departments, and products are strictly inspected and tested for performance in accordance with standards before shipment.

 

Professional Technical Team

The SDKC team has been professionally engaged in the electrical industry for more than ten years and has rich practical experience. We provide engineers to help you install and use, and provide free technical consulting services.

 

Various types are complete

Our circuit breaker series has a variety of types, including small circuit breakers 1, 2, 3P poles and various specifications of current amperes; molded case circuit breakers 3, 4P poles and various specifications of current amperes; high-current intelligent circuit breakers of various current amperes; We have both conventional parameter products, and each type can also be customized and manufactured according to your project.

 

Products are widely used

Our company's circuit breakers have short-circuit protection, overload protection, control, isolation and other functions, suitable for low-voltage terminal distribution of industrial and commercial lighting lines; in the fields of industry, civil buildings, energy, communications, infrastructure, AC and DC system protection, etc.

 

Benefits of Breaker
 

Compact Size
MCBs are compact and space-saving, making them ideal for installation in electrical distribution boards or consumer units with limited space. Their small footprint allows for more efficient use of available space and easier integration into existing electrical systems.

 

Wide Range of Ratings
MCBs are available in a wide range of current ratings to accommodate various electrical loads and applications. This flexibility allows homeowners to select MCBs with appropriate ratings for different circuits based on their specific requirements, ensuring optimal protection and performance.

 

Reliable Performance
MCBs offer reliable performance in detecting and responding to electrical faults, providing consistent protection against overload, short circuit, and ground fault conditions. Their robust construction and advanced trip mechanisms contribute to their durability and longevity in residential installations.

 

Ease of Installation and Maintenance
Installing MCBs is straightforward, requiring minimal time and effort compared to traditional fuse-based systems. MCBs can be easily mounted onto DIN rails in distribution boa.

 

Type of Breaker
XQH0327
XQH0355
XQH0223 1
XQH0193

Single Pole Circuit Breakers
The single pole breaker is the simplest and most widely used type in residential settings.
Inside a single pole breaker, electromechanical tripping triggers the internal contacts to open when overload current is detected on the single hot wire being monitored. This cuts power from flowing through the circuit any further.

 

Double Pole Circuit Breakers
Double pole breakers get their name because they monitor and open connections for two hot wires rather than just one. This makes them well suited for protecting 240 volt circuits like those powering large appliances.
Inside a double pole breaker, separate internal mechanisms trip two sets of contacts simultaneously when overload occurs. This interrupts both the hot wires (120V each, 180 degrees out of phase) that make up the total 240V circuit.

 

GFCI Circuit Breakers
GFCI stands for ground fault circuit interrupter. This type of breaker does more than just open from overloads. GFCI breakers also monitor electricity flowing in the circuit and will instantly trip if an abnormal ground fault is detected, providing important shock protection.


AFCI Circuit Breakers
AFCI is short for arc fault circuit interrupter. This advanced breaker type can detect hazardous electrical arcing from damaged wires or loose connections that overloads don’t necessarily trip.
AFCI breakers use specialized sensors to recognize arc patterns. If detected, the AFCI trips very quickly to extinguish the arc and prevent thermal damage or open flames.

 

Application Of Breaker

 

 

High temperature place
For places such as ironmaking, casting molding, boiler room, etc., the pure electromagnetic type that is not affected by temperature (but not too high) should be used. For thermal-electromagnetic type, when the temperature is between 40 ℃ and 60 ℃, the temperature should be reduced. Can not be used above 60 ℃.

 

Low temperature place
This refers to places below -5°C, such as refrigerated warehouses, low-temperature greenhouses, and ship open decks. If the temperature is too low, the lubricant will dry up and the insulation will become brittle. Therefore, users should order low-temperature breakers.

 

Humid place
Refers to relatively humid places such as chemical plants, fish processing plants, etc., the breaker should be installed in a waterproof box, and the humid tropical type plastic case breaker should be used if it is not in direct contact with water.

 

Dusty places
Such as cement factory, textile factory, the breaker can be used in the dust box.

 

Coal mines and other mines
660 V voltage class breaker can be used, and the breaker is placed in an explosion-proof box.

 

Ship
General civilian transport ships should use marine plastic case breakers with three protections (moisture proof, mildew proof, and salt spray proof) and a certain level of vibration, bump, and tilt resistance. The reference temperature is 45 ℃.

 

Choosing a breaker Specifications
 

Selecting the correct breaker for an electrical application involves considering various specifications and criteria to ensure proper protection, compatibility, and safety.

XQH0341
 

Amperage Rating

Match the amperage rating of the breaker to the maximum current load of the circuit. Overrating can lead to circuit damage, while underrating will cause frequent tripping.

 

Interrupting Capacity

This is the maximum fault current the breaker can safely interrupt. Higher ratings are needed for circuits with the potential for higher fault currents.

XQH0293
XQH0229
 

Voltage Rating

Ensure the breaker's voltage rating is compatible with the circuit. For example, most residential breakers are rated for 120/240 volts.

 

Physical Size

Breakers must fit into your panel, so always check the panel's layout and breaker size to ensure compatibility.

XQH0197

 

 
FAQ

 

Q: What is a breaker used for?

A: What is a circuit breaker. A circuit breaker is an electrical switch designed to protect an electrical circuit from damage caused by overcurrent/overload or short circuit. Its basic function is to interrupt current flow after protective relays detect a fault.

Q: What are the breakers of a house?

A: Your home's circuit breaker is a box that contains several switches (often they are labeled by room). These switches are safety devices designed to trip when too much power tries to travel through the circuit, causing it to heat up.

Q: What are the three types of breakers?

A: There are three basic circuit breaker varieties: standard breakers (which include both single-pole and double-pole circuit breakers), ground fault circuit interrupter circuit breakers (GFCIs) and arc fault circuit interrupter circuit breakers (AFCIs).

Q: What happens when you trip a breaker?

A: A tripped circuit breaker is when a circuit breaker automatically shuts off to prevent devices on the circuit from overheating or from receiving excessive power.

Q: How many breakers should a house have?

A: Electricians suggest putting no more than 8-10 lights or outlets per 15-amp circuit breaker. How many circuit breakers should a house have? The average number of breakers for average-sized house is 20-30. Electrical panels must have circuit directories on the outside of the panel door.

Q: Does every house have a main breaker?

A: It's important to know that not all houses have a main breaker. In fact, some older homes have 60-amp main breakers. Main breakers today are generally rated for 100, 150, or 200 amps, although they may be as large as 300 amps in some homes. The main circuit breaker is located in the electrical service panel box.

Q: What is a breaker bad?

A: The primary indication of a bad breaker is that it frequently trips without any electrical fault. Burning smell and the hot breaker is also a tale-tell sign that your breaker has gone bad.

Q: What does a breaker look like?

A: To find the breaker you need to check on, look for a thick metal box—it usually has a door on it with the breakers safely tucked behind. Electrical boxes often are olive green or gray.

Q: What is a triple breaker?

A: The 3-pole breakers are used for three-phase circuits where there is L1, L2, L3 and N wire. Normally, any residential users may use 120/240V single phase system, therefore they'd need 2-pole. The difference between two 120V wires is 240V, that's why the voltage rating is 240V.

Q: What is the most common breaker?

A: In the USA, the vast majority of breakers in most newer homes will be 20 amps. 20 amp branch circuits will feed all the regular outlets, and the lighting circuits. In older homes, 15 amp breakers might be more common.

Q: Is turning off the breaker the same as unplugging?

A: Turning off the circuit breaker cuts off all power to the refrigerator, including the power to the control board and other electrical components. Unplugging from the wall only cuts off power to the refrigerator but may still keep some components powered if they have a separate power source.

Q: How long do you leave a breaker off to reset it?

A: The short answer is, there's no mandatory wait time. If the circuit is no longer overloaded and the fault condition has been resolved, you can reset the breaker immediately. However, it's advisable to wait a few minutes for the appliance causing the overload to cool down before resetting the breaker.

Q: How many times can a breaker trip before it needs replaced?

A: Depends on what type of breaker you are talking about, most are rated for around 2000 operations or 2-3 fault interuptions before they should be reconditioned.

Q: How do you know if you blew a breaker?

A: If you're lucky enough to have a Square D QO panel (the breakers will all have little clear windows on them) it's easy to find a tripped breaker. Just look for the breaker that has a red-orange window. That's the tripped breaker.

We're well-known as one of the leading breaker manufacturers and suppliers in China. Please feel free to buy high quality breaker at competitive price from our factory. For customized service, contact us now.