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Circuit Breaker PCB

  • Over 10 Years of Experience
  • Excellent Quality Circuit Breaker PCB
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What Are The Major Applications Of Multilayer Circuit Breaker PCB?

Multilayer circuit breaker PCB has a lot of uses in multiple sectors due to its impressive functionality and thermal management. The major applications as belows:

1.Commercial electronics goods
2.Industrial equipment&Automotive devices
3.Residential electronic machinery. Like washing machines, hairdryers, lighting. etc.
4.Medical instruments for different testing
5.Defense equipment&Military industry

Major Applications Of Multilayer Circuit Breaker PCB
Benefts Of using A Circuit Breaker PCBBenefts Of using A Circuit Breaker PCB

What Are The Benefts Of using A Circuit Breaker PCB?

Circuit breaker PCB renders countless have great to electronic products. Some of its most noteworthy
advantages as belows:

1.It impedes different types of stresses caused by excessive current. Like overloads, short circuits, line-
to-ground fault currents, etc.
2.It keeps durable for a long time. The resistant to moisture and other external contaminants.
3.Circuit breaker PCB is capable of handling at a large-scale temperature range. Its commendably
thermal management process permit it to tolerate hot and cold weather.

How Does A Circuit Breaker PCB Operate?

Circuit breaker PCB has a superlative handing process that make sure the highest protection of electrical components. This PCB begins the operation when a particular wire gets overloaded with electricity or experiences on a short circuit.

Overcurrents produce excess heat that lead in burning the wire. It is harmful to the devices. Circuit breaker PCB controls the handle of circuit breakers in electric circuits. It could be make sure the circuit breaker to limit overcurrents and shut down the current flow in that wire.

How Does A Circuit Breaker PCB Operate?

Venture is a leading Circuit Breaker PCB manufacturer in China for more than 10 years. We manufactured and designed the circuit breaker PCB through our advanced manufacturing facility.

We are capable of manufacturing the highest quality circuit breaker PCB by utilizing durable and quality raw materials along with our highly trained and expert engineers.


Your Leading Circuit Breaker PCB Supplier in China

If you are looking for a brand new and high-quality circuit breaker PCB for your specific applications, you’ve come to the right place. Venture is a leading manufacturer and supplier that offers a complete solution for your needs.

Venture manufactures different types of circuit breaker PCB.

  • magnetic
  • thermal
  • thermal-magnetic
  • magnetic with a hydraulic delay

As a leading manufacturer, we have the right circuit breaker PCB depending on your specific applications. As one of the best circuit breaker PCB manufacturer, we will let you experience value-driven services and excellent quality PCB products.

Venture circuit breaker PCB manufacturer in China is fully dedicated when it comes to the printed circuit board production and focusing on the overseas market.

At Venture, you rest assured to get excellent services from the circuit breaker PCB project plan and designing to shipping, installation, and production.

We will provide a complete solution for you. All of our circuit breaker PCB is designed durable and functional for long-lasting use.

As one of the best manufacturers of the printed circuit boards, Venture has passed a lot of certifications like ISO 9001, SGS, CE, and more.

In our facility, we have unique and advanced sets of the different printed circuit board manufacturing lines, and an in-house fabrication factory to produce the highest quality circuit breaker PCB.

Whether you need the highest quality circuit breaker PCB or need to custom any printed circuit board, we can always satisfy your needs.

Get an instant quote for your next plastic boat windshield order!

Circuit Breaker PCB: The Ultimate FAQ Guide


If you have any question about circuit breaker PCB, you will find the answer right here.

From features, components, working principle to classification criteria – you will find all information you have been looking for right here.

Keep reading

What Is A Circuit Breaker PCB?

 Circuit breaker PCB

circuit breaker PCB

A circuit breaker PCB is a component vital for supporting the making, carrying, or breaking of a circuit either automatically or manually.

Besides, it can perform this task under abnormal or normal situations.

Also, the circuit breaker PCB has vital components that will assist in the protection of electrical circuits from damage.

This damage can occur due to a short circuit or an overcurrent.

The parts on the circuit breaker PCB will interrupt the flow of current once the protective relays detect a malfunction.

What Are The Classifications Of Circuit Breaker PCBs?

 High voltage circuit breaker

High voltage circuit breaker.

There are different ways you can use to classify circuit breaker PCBs.

Here are the various classifications:

Based on Voltage Class

Here, you will classify the circuit breaker PCB by looking at the operating voltage for the application.

Also, you can find two types of circuit breaker PCBs on the voltage level, and they include:

  1. Low voltage circuit breaker PCB

This circuit breaker PCB is suitable for voltages equal to or below 1000V.

  1. High voltage circuit breaker PCB

This circuit breaker PCB is suitable for voltages surpassing 1000V.

Also, under this category, you can classify the circuit breaker PCB into 72.5kV or below, and 123kV or above.

Based On Installation Type

Circuit breaker PCBs can have their classification based on the location installation.

For instance, you can have circuit breaker PCBs suitable for either outdoor or indoor installation.

Besides, they are normally high voltage circuit breaker PCBs.

The main difference between the indoor and outdoor circuit breaker PCBs is the enclosure and packaging structure you will use.

However, the functionality, components, and interrupting mechanisms between these two are similar.

Based On External Design

There are two ways you can classify circuit breaker PCBs by looking at their physical structure.

These include:

  1. Dead tank circuit breaker PCB

Here, you will place the switching component within a vessel at ground potential.

Also, interrupters and insulating materials will offer insulation on the circuit breaker PCB.

  1. Live tank circuit breaker PCB

Here, the circuit breaker PCB containing interrupters and insulating material is at a higher potential than the ground.

Based On Interruption Medium

Here, you will classify the circuit breaker PCB by looking at the interrupting medium and arc extinction.

Besides, you will design circuit breaker PCBs based on the arc extinction method and the current interrupting medium.

What Are The Types Of Circuit Breaker PCBs?

 Circuit breaker PCB

Circuit breaker PCB

Circuit breaker PCBs find their types based on the number of layers, frequency, and substrate material.

The various types of circuit breaker PCBs include the following:

Single-sided Circuit Breaker PCB

This is a basic type of circuit breaker PCB as it has one substrate layer or base material.

Besides, this single layer has a thin layer of metal cover, such as copper, which is a suitable conductor of electricity.

Besides, single-sided circuit breaker PCBs have a protective solder mask on top of the copper layer, together with a silkscreen layer.

Also, the electrical components are on one side of the circuit board.

Since single-sided circuit breaker PCBs have a single conducting layer, conductive paths will not intersect or overlap.

The benefits of single-sided circuit breaker PCBs include:

  1. They are suitable for volume production
  2. Also, they are low in cost
  3. They use simple circuits such as relays, sensors, etc.
  4. Simple to design
  5. Easy to manufacture
  6. Good for low-density designs
  7. Simple to repair

Double-sided Circuit Breaker PCB

Both sides of double-sided circuit breaker PCBs have a conductive metal layer on the substrate.

The holes on the PCB enable you to attach metal components from one side of the board to the other.

Besides, you can use either of the two mounting systems to connect the circuits.

These methods include thru-hole technology and surface mount technology.

In thru-hole technology, you will insert the lead parts in the pre-drilled holes on the circuit breaker PCB.

After that, you will solder them to pads that are on the other side.

In surface-mount technology, you will place the electrical parts directly on the surface of the circuit breaker PCB.

Besides, surface mounting enables you to attach several circuits than thru-hole mounting

The benefit of double-sided circuit breaker PCBs include:

  1. More flexible
  2. A relatively low cost
  3. Suitable for complex electronics
  4. More compact due to reduced size
  5. More circuit density

Multi-layer Circuit Breaker PCB

These circuit breaker PCBs have more than two layers of copper.

For instance, they may come with 4, 6, or 8 layers.

Multi-layer circuit breaker PCBs increase the application technology that double-sided circuit breaker PCB use.

Besides, the design resembles a sandwich, with many double-sided conductive layers being separated equally by insulating materials.

Also, you will bond all these layers under high temperature and pressure levels to eliminate air gaps that may cause it to be unstable.

The benefits of multi-layer circuit breaker PCBs include:

  1. Compact size
  2. Suitable for high-speed applications
  3. Highly robust
  4. Increase in design flexibility

Rigid Circuit Breaker PCB

This type of circuit breaker PCB has base materials made from solid materials, hence, cannot bend or flex.

Also, this feature makes the rigid circuit breaker PCB strong.

Rigid circuit breaker PCB has several layers comprising solder mask, copper, silkscreen, and substrates.

All these layers are bind together with heat and adhesives.

Besides, you can find rigid circuit breaker PCBs in single, double, or multi-layered fashions.

However, once you make rigid circuit breaker PCBs, you cannot modify or alter them.

The benefits of rigid circuit breaker PCBs include:

  1. Cost-effective
  2. Lightweight
  3. Easy to repair and diagnose
  4. Compact design
  5. Low electronic noise
  6. Can absorb vibrations

Flexible Circuit Breaker PCB

This type of circuit breaker PCB has the components on a flexible substrate material.

Besides, flexible circuit breaker PCBs can come as single-sided, double-sided, or multi-layered.

Flexible circuit breaker PCBs are made from conductive polyester film, polyether ether ketone, or polyimide.

The design of this PCB allows it to flex during its entire application.

Some benefits of flexible circuit breaker PCBs include:

  1. Good thermal management
  2. Compact design
  3. Eliminates the need for connectors
  4. Improve reliability and repeatability
  5. Suitable for usages that need high signal trace density
  6. Offer uniform electrical traits for high-speed circuitry

Rigid-flex Circuit Breaker PCB

This circuit breaker PCB is a hybrid between flex and rigid circuit breaker PCB.

Besides, this will enable you to fold the board during its application.

The flexible part functions as interconnections between the rigid PCB.

This results in narrow conductor lines occupying less space making the PCB smaller.

Besides, using the flexible portion enables you to eliminate the need to use connectors, hence, lightening this PCB.

The benefits of rigid-flex circuit breaker PCBs include:

  1. Lightweight design
  2. Shock resistance
  3. 360-degree bendability
  4. More reliable
  5. Simple assembly process
  6. Fewer solder joints assuring a high connection reliability

Aluminum Backed Circuit Breaker PCB

These are useful in high power usages since aluminum assists in dissipating heat.

They provide more rigidity and a low thermal expansion making them suitable for high mechanical tolerance applications.

What Factors Should You Consider When Choosing Circuit Breaker PCBs?

Circuit breaker PCBs are vital hence make sure the choice, manufacturing, and assembly choices happen correctly.

Here are some factors worth considering:

Type Of Design

Here, you will consider the available types of circuit breaker PCBs such as:

  1. Single-sided
  2. Double-sided
  3. Multilayer
  4. Rigid
  5. Flexible
  6. Rigid-flex

Assembly Processes

Consider how the parts of the circuit breaker PCB are mounted on the board.

The main processes include surface mount assembly and through-hole assembly.


The amount you have will determine the kind of circuit breaker PCB you can afford.

For instance, single-sided circuit breaker PCBs are cheaper than multilayered circuit breaker PCBs.

Voltage Rating

Calculate this by understanding the highest voltage you can apply to the components within the system.

Ensure the circuit breaker PCB has enough voltage capacity for the intended application.

Maximum Interruption Capacity

This is the highest fault current that the circuit breaker PCB can disrupt without failing.

Ensure the interrupting capacity of the circuit breaker PCB equals or surpasses the fault current.

Incorrect interrupting capacity can damage the circuit breaker PCB.


A circuit breaker PCB with up to 600 amps can find its application in frequencies between 50 Hz and 120 Hz.

More than 120 Hz frequencies can derate the circuit breaker PCB since iron losses and eddy currents create more heat.

Over 600 amps highly rated circuit breaker PCBs have transformer-heated bimetals.

Also, they are suitable for a 60 Hz alternating current maximum.

Operating Conditions

Some scenarios to consider when selecting the type of circuit breaker PCB to use include:

  1. High ambient temperature
  2. Corrosion and moisture
  3. High shock probability
  4. Altitude
  5. Resting position

Maintenance And Testing

Ensure the circuit breaker PCB complies with all standard quality standards.

Can You Replace Components on Circuit Breaker PCBs?

Circuit breaker components

Circuit breaker components

Replacing parts on a circuit breaker PCB can become difficult if you lack the correct tools.

Components such as SMD capacitors are easy to replace as all you need is a solder and a soldering iron.

However, electronic chips with several leads need more tools.

Since the traces and pads on circuit breaker PCBs are delicate, you need to be careful when replacing these components.

Here are the instructions on how to replace components on a circuit breaker PCB:

  • Step 1

Begin by securing the circuit breaker PCB on a flat surface to eliminate the chances of it moving while replacing parts

  • Step 2

Power on the hot-air gun and place it 6 inches above the part you need to change.

Ensure you are careful not to heat the other parts.

The component will loosen in a few seconds.

Proceed to pull the part using tweezers then turn off the hot-air gun.

  • Step 3

During this process, some parts may become loose so you need to wait for a few before conducting the next step.

This ensures the other parts would bond to their pads.

  • Step 4

Power on the soldering iron to 450 °C then use with copper braids to remove excess solder from the pads where the component rested.

Place the braid on the pad and the soldering iron over the braid for a few seconds as the braid will absorb the excess solder.

  • Step 5

Use an alcohol swab to clean the surface of the pad.

  • Step 6

Carefully align and place the new component on the circuit breaker PCB.

  • Step 7

Proceed to solder the component lead with its pad on the circuit breaker PCB using soldering iron and solder.

Ensure you use small amounts of solder to avoid the excess spilling to other pads.

How Does A Circuit Breaker PCB And Fuses Compare?

Fuse vs circuit breaker

Fuse vs circuit breaker

Here is how these two compare:

Circuit Breaker PCB

This is a component vital for supporting the making, carrying, or breaking of a circuit either automatically or manually.

The PCB will hold the electronic components responsible for protecting electronic components.

Circuit breaker printed circuit board

Circuit breaker printed circuit board


This is a safety device that provides overcurrent protection of electrical circuits.

They are also cost-effective and will open during an overcurrent.

Besides, it needs replacement following an overcurrent situation.

What Are The Components Of A Circuit Breaker PCB?

 Circuit breaker components

Circuit breaker components

There are several parts within a circuit breaker PCB, which make it a functional device and not a bare board.

Here are the components you will find in circuit breaker PCBs:


These are the most popular parts of circuit breaker PCBs.

Resistors will inhibit the flow of current by dispersing electric power in form of heat.

Besides, they come in various types from different materials.

The most common resistor is the axial style resistor that has leads on both ends with the body containing colored rings.

The rings show the resistance value.


They are the second most popular components on circuit breaker PCBs after the resistors.

Capacitors will temporarily contain electric charge, then release it when other parts of the circuit breaker PCB need more power.

It performs this task by gathering opposite charges within two conductive layers which are separated by insulators or dielectric materials.

The categories of capacitors depend on the dielectric material or the conductor.

This gives rise to capacitors with various traits such as:

  1. High capacitance capacitors
  2. Diverse polymer capacitors
  3. Ceramic disc capacitors


This part gives off light and is available as single, low-power, and multi-color variations.


These are amplifiers and electronic switches that come in several variations, with bipolar transistors being the most popular type.

Also, you can categorize them as NPN and PNP.

Bipolar transistors contain three pins namely the emitter, collector, and base.


They store energy as magnetic fields that will generate when there is a flow of current.

The more the number of wire windings, the greater the magnetic field, inductance.


These parts enable the flow of current in a single direction, from the positive anode to the negative cathode.

It performs this by having no resistance in a single direction and high resistance in the opposite direction.

Besides, it prevents damage from occurring on the circuit breaker PCB.

Integrated Circuits

These parts operate as timers, amplifiers, memory, or oscillators.

ICs are small wafers that are made from silicon, able of holding up to millions of transistors, capacitors, and resistors.


This part will transfer the electrical energy from one circuit to the next circuit by increasing or decreasing the voltage.


These parts detect environmental changes and produce electronic signals that correspond to that change.

This signal is then relayed to other electronic parts within the circuit.

They change energy from a physical situation to electrical energy, basically working as transducers.


This is a type of variable resistor available as rotary or linear.

Rotating the knobs of rotary potentiometers will vary the resistance since the slider contact moves over semi-circular resistors.

In linear potentiometers, moving the slider contact linearly on the resistor will vary the resistance.

Crystal oscillators

These parts ensure the electronic device operates correctly and on time by providing the clock in several circuits.


They are vital at interrupting current.

Silicon-Controlled Rectifiers [SCR] or Thyristors

These are semiconductor switches that control high amounts of power through small signal inputs.


These parts allow electricity to flow from one part to the other, hence, enable the flow of electrons.

Passive Device Guide

These parts store or expend energy and do not produce power.

Switches And Relays

The switch is a power button that controls the flow of current in the circuit, either by opening or closing the circuit.

Relays are electromagnetic switches that operate by using solenoids, which become temporary magnets when current flows through them.

They operate as switches and can amplify the smaller current to large current.

What Are The Operating Mechanisms Of Circuit Breaker PCBs?

Circuit breaker PCB

Circuit breaker PCB

These include:

Over Toggle

This mechanism illustrates the ways of opening or closing the circuit breaker PCB.

Two-step Stored Energy

This mechanism is suitable when you need large energy amounts to rapidly close the circuit breaker PCB.

What Are The Contact Assembly In Circuit Breaker PCB?

Contact assembly has a movable contact, arm, stationary contact, and stationary conductors.

They assist with the opening or closing of the circuit hence prevent overcurrent and short circuit.

What Are The Reasons For Arc In Circuit Breaker PCBs?

The following are the reasons for arc within circuit breaker PCBs:

  • A potential difference between contacts
  • Ionized particles between contacts

What Is An Arc Distinguisher In Relation To Circuit Breaker PCB?

This is the part of the circuit breaker PCB responsible for extinguishing arcs when contacts are in an open state.

What Are The Methods Of Arc Extinction In Circuit Breaker PCBs?

The ways of extinguishing arc between circuit breaker PCBs and contacts are:

High Resistance Method

Here, you will increase the resistance of the arc thus the current becomes insignificant and cannot maintain the arc.

Low Resistance Method

Here, you will maintain a low resistance of the arc to the point where current becomes zero, causing the arch to naturally extinguish.

What Is An Arc Flash In Circuit Breaker PCB?

Arc forms when the contacts in circuit breaker PCBs open because of larger than normal current flows.

Circuit breaker PCBs assist in quickly dealing with the arcing situation.

How Does Overcurrent, Overloads, And Short Circuits Compare In Circuit Breaker PCB?

Here is how these compare:


This is current that surpasses the rated current of a device and ampacity of the conductor.

Overcurrent happens due to an overload, arc, short circuit, or ground fault.


This is how a device operates during the following:

  1. Excess of normal
  2. Full-load rating
  3. Excess of rated ampacity

When this happens for a long time, it will damage or overheat the circuit breaker PCB.

Short Circuit

This is an overcurrent that surpasses the normal full load current of the circuit breaker PCB.

Short circuits stray from the usual path and take a shortcut to the load and back to the power sources.

Besides, short circuits are overcurrent and not overloads.

Circuit breaker PCB

Circuit breaker PCB

Can You Replace Different Circuit Breaker PCBs Brands With One Another?

Yes, there are OEM circuit breaker PCBs allowing you to replace the brands with one another.

What Is The Function Of The Main Circuit Breaker PCB?

It operates by providing a way of disconnecting the entire circuit breaker panel, thus, shutting off the entire system.

How Can You Reset The Main Circuit Breaker PCB?

Yes, you can reset them after the trip due to overload, power surges, or lightning strikes.

How Do You Safely Remove A Circuit Breaker PCB?

To remove a circuit breaker PCB from the circuit breaker, you need to shut off the power before proceeding.

Also, wear safety equipment or call professionals.

What Techniques Do Circuit Breaker PCB Use To Extinguish Arc?

The methods include:

  • Splitting the arc
  • Cooling the arc
  • Increasing arc length
  • Minimizing cross-section of arcs

What Mediums Do High-Voltage Circuit Breaker PCBs Use To Extinguish Arc?

These include:

  • Vacuum
  • Bulk oil
  • Airblast
  • Minimum oil
  • Carbon dioxide
  • Sulfur hexafluoride (SF6) gas.

What Is An Electric Arc In Circuit Breaker PCBs?

This is the electrical breakdown of gasses that generate prolonged electrical discharge.

What Is The Function Of Circuit Breaker Analyzers In Circuit Breaker PCBs?

This instrument will measure the parameters within a circuit breaker PCB.

It may measure values such as motion, timing, vibration, coil currents, dynamic capacitance, or dynamic resistance.

How Do You Test The Quality Of Circuit Breaker PCBs?

Employ the following methods to test circuit breaker PCBs:

In-circuit Testing

Here, you will inspect the fitment and positioning of the parts using electrical probes.

Visual Testing

This test employs experts to check the physical external components of the circuit breaker PCB.

X-ray Inspection

In this test, you will inspect the densely packed components using an X-ray as the heavy metals will absorb them.

This allows you to make an easy inspection.

Functional Testing

In this test, you will ensure the circuit breaker PCB operates and conforms to a set of quality standards.

Automated Optical Inspection [AOI]

Here, you will use an inbuilt blueprint of the design to compare it to the final circuit breaker PCB for any flaws.

What Is A Miniature Circuit Breaker PCB?

These are automatically operated electrical PCB switches that inhibit the damage of electrical circuits due to surplus current.

What Should You Consider When Choosing Miniature Circuit Breaker PCBs?

The factors worth considering include:

  • Tripping characteristics
  • Breaking capacity
  • Number of poles within the housing

Which Are The Safety Precautions When Handling Circuit Breaker PCB?

These include:

  • Checking all connections
  • Wearing protective clothing
  • Handle solder carefully
  • Use appropriate temperatures
  • Avoid exposing copper traces to the atmosphere

Which Quality Standards Mark Should Circuit Breaker PCBs Have?

These include:

  • CE mark of quality
  • Restriction of Hazardous Substances [RoHS]
  • UL certification

At Venture Electronics, we offer a range of circuit breakers PCB depending on your unique requirements.

Let Venture support your OEM circuit breaker PCB business – contact us now.

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