MCB Circuit Breakers for Sale in Nairobi & Kenya | PRO-LOGIC TECHNOLOGIES

PRO-LOGIC TECHNOLOGIES supplies and sources MCB circuit breakers for residential, commercial, industrial, electrical installation, maintenance, control-panel, machinery and general electrical protection applications in Nairobi and across Kenya.

If you are searching for MCB breakers in Nairobi, miniature circuit breakers in Kenya, electrical breakers for sale, MCB suppliers in Kenya, circuit protection devices, DIN-rail MCBs, single-phase MCBs, three-phase MCBs, or replacement circuit breakers, PRO-LOGIC TECHNOLOGIES can assist with component identification, availability and sourcing.

An MCB is a fundamental electrical protection device. Selecting the correct MCB requires consideration of the circuit voltage, current, conductor size, load characteristics, number of poles, prospective fault current, installation arrangement and applicable electrical standards.

Our goal is to help electricians, contractors, technicians, engineers, businesses and property owners obtain the appropriate MCB for their electrical application.

What Is an MCB?

MCB stands for Miniature Circuit Breaker.

An MCB is an automatically operated electrical switching and protection device designed to interrupt current when a circuit experiences conditions such as an overload or short circuit.

Unlike a conventional fuse, an MCB can generally be reset after the fault has been cleared and the device has been inspected as appropriate.

MCBs are commonly installed inside:

Distribution boards
Consumer units
Electrical panels
Control panels
Metering installations
Residential installations
Commercial buildings
Industrial installations
Workshops
Offices
Shops
Schools
Institutions
Machinery control systems

MCB Supplier in Nairobi

PRO-LOGIC TECHNOLOGIES provides MCB supply and sourcing services in Nairobi.

We work with:

Electricians
Electrical contractors
Building contractors
Maintenance technicians
Electrical engineers
Industrial technicians
Property managers
Facility managers
Solar technicians
Appliance technicians
Workshop owners
Businesses
Institutions
Homeowners

Whether you require one MCB for replacement or multiple breakers for a new distribution board, contact us with your specifications.

MCBs for Sale in Kenya

We supply or source different MCB configurations according to availability and specification.

Our MCB categories include:

1-pole MCBs
2-pole MCBs
3-pole MCBs
4-pole MCBs
Single-phase MCBs
Three-phase MCBs
Different current ratings
Different voltage ratings
Different breaking capacities
Different trip curves
DIN-rail MCBs
Distribution-board MCBs
Industrial MCBs
Commercial MCBs
Residential MCBs

For a specific breaker, provide the brand, model, pole configuration, current rating and curve characteristic whenever possible.

Single-Pole MCB

A single-pole MCB is commonly used for appropriate single-phase circuits.

Depending on the electrical system and installation design, single-pole breakers can be used for circuits supplying:

Lighting
Socket outlets
Small appliances
Dedicated equipment
Control circuits
Other suitable single-phase loads

The correct breaker rating must be determined from the circuit design rather than simply selecting a breaker based on the connected appliance.

Double-Pole MCB

Double-pole MCBs contain two poles and are used in suitable applications where the electrical design requires switching/protection of two conductors.

Applications can include:

Single-phase distribution
Dedicated equipment
Electrical panels
Isolation arrangements
Certain appliance circuits

The exact configuration should be selected according to the installation requirements.

Three-Pole MCB

Three-pole MCBs are commonly used in appropriate three-phase systems.

They may be installed for:

Three-phase machinery
Motors
Industrial equipment
Commercial equipment
Workshops
Three-phase distribution
Control panels

Three-phase protection must be designed correctly, taking into account the equipment and electrical installation.

Four-Pole MCB

Four-pole MCBs provide four switched/protected poles depending on the particular device configuration.

They can be used in appropriate multi-phase systems where the installation design requires this arrangement.

Applications may include:

Three-phase distribution
Commercial installations
Industrial panels
Equipment supplies
Distribution boards

Common MCB Current Ratings

MCBs are manufactured in many current ratings.

Common ratings include:

2A
4A
6A
10A
13A
16A
20A
25A
32A
40A
50A
63A
Higher ratings in appropriate breaker families

Availability varies by manufacturer, product range and supplier.

The rating must be selected according to the circuit design and not simply according to the maximum load someone wants to connect.

6A MCB

A 6A MCB can be suitable for appropriately designed low-current circuits.

Potential applications may include certain lighting and control circuits, subject to the electrical design.

10A MCB

10A MCBs are commonly used for appropriately rated circuits.

The actual application should always be determined by the circuit's cable size, expected load and protection requirements.

16A MCB

16A MCBs are widely encountered in residential, commercial and equipment circuits.

Potential applications can include appropriately designed socket or dedicated equipment circuits.

20A MCB

20A MCBs are available for circuits designed to operate within the relevant current and protection parameters.

25A MCB

25A breakers can be used in suitable circuits where the electrical design requires this rating.

32A MCB

32A MCBs are common in various domestic, commercial and equipment applications.

They may be used for appropriately designed socket circuits, dedicated appliances and other loads.

40A MCB

40A MCBs can be used for suitable higher-current circuits.

Correct selection requires consideration of cable capacity, load characteristics and installation conditions.

50A MCB

50A MCBs are available for appropriately designed circuits and distribution applications.

63A MCB

63A MCBs are commonly used for higher-current circuits and certain distribution applications.

The correct breaker must be selected according to the installation design and the manufacturer's specifications.

MCB Curve Types

One of the important characteristics of an MCB is its trip curve.

Common MCB curves include:

Type B
Type C
Type D

These curves determine how the breaker responds to short-duration high currents, particularly in relation to the instantaneous magnetic trip mechanism.

Type B MCB

Type B MCBs are commonly associated with circuits having relatively low inrush current.

They may be appropriate for applications such as:

General lighting
Resistive loads
General domestic circuits
Certain socket circuits

The suitability depends on the complete installation design.

Type C MCB

Type C MCBs tolerate higher short-duration inrush currents than Type B devices.

They are commonly encountered in circuits supplying loads such as:

Motors
Transformers
Some lighting equipment
Inductive loads
Equipment with moderate starting current

The actual selection should be based on the equipment and circuit characteristics.

Type D MCB

Type D MCBs are designed for applications where significantly higher inrush currents can occur.

They may be used for certain:

Motors
Transformers
Industrial machinery
High-inrush equipment

Type D should not be selected simply because it has a higher tolerance to starting current. The fault-loop and protection characteristics of the installation must support the selected device.

MCB Breaking Capacity

Another important specification is the breaking capacity.

Breaking capacity indicates the level of prospective short-circuit current that the device is designed to interrupt safely under specified conditions.

Common ratings may include:

4.5 kA
6 kA
10 kA

Specific ratings vary between manufacturers and product ranges.

When purchasing an MCB, do not consider only the ampere rating. The short-circuit environment and required breaking capacity are also important.

MCB Voltage Ratings

MCBs are manufactured for specific voltage systems.

Depending on the product, you may encounter devices rated for:

AC systems
Single-phase applications
Three-phase applications
Higher-voltage distribution systems
DC applications

AC and DC circuit breakers are not automatically interchangeable.

If you require an MCB for a DC system, clearly state that when requesting the breaker.

AC MCBs

AC MCBs are commonly used in:

Homes
Offices
Shops
Commercial buildings
Workshops
Industrial installations
Distribution boards

They are designed according to their specified AC voltage and interrupting characteristics.

DC MCBs

DC applications require breakers specifically designed and rated for DC interruption.

DC systems can include:

Solar installations
Battery systems
DC control systems
Telecommunications
Electronic equipment
Certain industrial systems

A breaker designed only for AC should not automatically be used on a DC circuit.

When ordering a DC breaker, provide:

DC voltage + current + number of poles + application.

MCB for Domestic Electrical Installation

MCBs are widely used in residential distribution boards.

A typical domestic distribution board may contain separate protective devices for circuits such as:

Lighting
Socket outlets
Cooker
Water heater
Shower
Air conditioner
Pump
Outdoor equipment
Dedicated appliances

The exact configuration depends on the electrical installation.

MCB for Commercial Buildings

Commercial premises often have several electrical circuits requiring individual protection.

MCBs can be used in appropriate applications for:

Offices
Shops
Restaurants
Hotels
Schools
Clinics
Warehouses
Workshops
Commercial buildings

Larger installations may combine MCBs with other protective devices such as RCCBs, RCBOs, MCCBs and surge protection devices.

MCB for Industrial Applications

Industrial installations can require circuit breakers for:

Control circuits
Machinery
Lighting
Small equipment
Auxiliary circuits
Control panels
Distribution circuits

For high-current industrial applications, other breaker technologies may be more appropriate depending on the system.

MCB for Control Panels

Control panels frequently use DIN-rail mounted MCBs.

An MCB may protect:

Control transformers
Auxiliary power supplies
Control circuits
Small motors
Lighting
Panel accessories
Electronic equipment

Panel designers should select the breaker according to the protected circuit.

MCB for Electrical Distribution Boards

Distribution boards organize electrical circuits and provide circuit protection.

MCBs are commonly mounted on DIN rails inside distribution boards.

They can protect individual outgoing circuits while allowing the operator to isolate a circuit when required.

DIN-Rail MCB

Many modern MCBs are designed for DIN-rail mounting.

DIN-rail MCBs are convenient for:

Distribution boards
Control panels
Automation panels
Industrial cabinets
Electrical enclosures

When purchasing a replacement, check that the breaker physically fits the intended mounting arrangement.

MCB Accessories

Depending on the breaker family, accessories may include:

Auxiliary contacts
Alarm contacts
Shunt trips
Undervoltage releases
Busbars
Terminal accessories
Locking accessories
Mounting accessories

Availability depends on the manufacturer and product series.

MCB Busbars

Busbars can be used to distribute power to multiple breakers within suitable distribution-board arrangements.

Busbars must be correctly selected according to:

Current rating
Number of poles
Breaker compatibility
Physical dimensions
Distribution-board design

MCB Auxiliary Contacts

Some MCB systems support auxiliary contacts that provide remote indication of the breaker state.

These can be useful in:

Control panels
Automation systems
Monitoring systems
Industrial equipment

MCB Alarm Contacts

Alarm contacts can provide an electrical signal when a breaker trips under specified conditions.

They can be useful for:

Remote monitoring
Control systems
Industrial installations
Building management systems

MCB Shunt Trip

A shunt-trip accessory can allow a breaker to be tripped remotely under appropriate system conditions.

Applications may include:

Emergency systems
Industrial control
Remote shutdown
Special electrical installations

The exact accessory must match the MCB family.

MCB vs Fuse

Both MCBs and fuses can provide overcurrent protection, but they operate differently.

A fuse normally contains an element designed to melt when excessive current flows.

An MCB uses a mechanical switching mechanism with thermal and/or magnetic protection depending on the device.

One major practical difference is that an MCB can normally be reset after an appropriate trip, whereas a conventional fuse generally needs replacement.

Neither should be considered automatically superior for every application.

MCB vs MCCB

MCBs and MCCBs are both circuit breakers, but they are designed for different ranges of applications.

MCB

Typically used for lower-current circuits and many residential, commercial and auxiliary applications.

MCCB

Generally used for higher-current applications and industrial or distribution systems requiring greater capacity and additional adjustment or protection features depending on the product.

If you need a breaker for a high-current industrial installation, provide the required current, voltage and application.

MCB vs RCBO

An MCB primarily provides overcurrent and short-circuit protection.

An RCBO combines overcurrent protection with residual-current protection in a single device.

An RCBO may therefore be appropriate where the circuit design requires both functions.

MCB vs RCCB

An RCCB is designed primarily to detect residual/leakage current and provide protection against specified electrical shock/fire risks under suitable conditions.

An RCCB does not replace the need for appropriate overcurrent protection.

An MCB and RCCB can therefore serve different protective functions.

MCB and Surge Protection

Surge protection devices and MCBs have different functions.

An MCB protects against specified overcurrent conditions.

A surge protection device is designed to limit transient overvoltages.

A complete electrical installation may use several different protective devices together.

How an MCB Works

An MCB generally uses thermal and magnetic mechanisms.

Thermal Protection

The thermal mechanism responds to sustained overcurrent conditions.

When excessive current causes the internal bimetallic element to heat sufficiently, the breaker mechanism operates and opens the circuit.

Magnetic Protection

The magnetic mechanism responds rapidly to high fault currents such as short circuits.

This allows the MCB to disconnect the circuit quickly under appropriate fault conditions.

Why an MCB Keeps Tripping

An MCB that repeatedly trips should not simply be replaced with a larger breaker.

Repeated tripping can indicate:

Overload
Short circuit
Faulty appliance
Damaged wiring
Loose connection
Insulation fault
Incorrect breaker selection
Equipment startup current
Fault in the protected circuit

The underlying fault should be investigated by a qualified electrician.

MCB Tripping When Appliance Is Switched On

If an MCB trips immediately when an appliance is switched on, possible causes include:

Short circuit
Appliance fault
Incorrect connection
Excessive startup current
Faulty power supply
Damaged cable
Incorrect breaker curve

Do not repeatedly reset the breaker without investigating the cause.

MCB Tripping After Several Minutes

A breaker that trips after operating for some time can indicate an overload or thermal issue.

Possible causes include:

Excessive continuous load
Undersized circuit
Poor connection
Overheating
Faulty equipment
Incorrect breaker rating

A qualified electrician should diagnose the circuit.

MCB Will Not Reset

If an MCB refuses to reset, possible causes include:

Active fault on the circuit
Short circuit
Mechanical damage
Internal breaker failure
Incorrect reset procedure
Persistent overload

Disconnecting loads and testing the circuit may be required.

MCB Replacement

When replacing an MCB, the replacement should not be selected solely based on physical appearance.

Check:

Current rating
Voltage rating
Pole configuration
Trip curve
Breaking capacity
Terminal arrangement
Mounting type
Manufacturer compatibility
Application
Installation requirements

How to Identify an Existing MCB

If you need an MCB replacement, look at the front of the breaker.

Important markings can include:

Current:
For example, 6A, 16A, 32A or 63A.

Curve:
For example, B, C or D.

Poles:
1P, 2P, 3P or 4P.

Breaking capacity:
For example, 6kA or 10kA.

Voltage:
For example, 230V or 400V AC, depending on the device.

Manufacturer:
The brand printed on the breaker.

Take a clear photograph of these markings and send it to PRO-LOGIC TECHNOLOGIES.

MCB Identification from a Photograph

If you don't know the MCB specification, a photograph can help.

Take a picture showing:

The entire front of the breaker.
The current rating.
The curve marking.
Manufacturer name.
Voltage marking.
Breaking-capacity marking.
Number of poles.
Any model or product number.

If the MCB is already installed in a distribution board, a wider photograph can also help show how it is configured.

MCB Prices in Kenya

MCB prices vary according to:

Brand
Current rating
Number of poles
Breaking capacity
Curve
Product series
Application
Certification
Quantity
Availability

For this reason, there is no single price that applies to every MCB.

Contact PRO-LOGIC TECHNOLOGIES with the exact MCB specification for current availability and pricing.

Wholesale MCB Supply in Kenya

Contractors and electrical businesses may require MCBs in larger quantities.

We can assist with bulk requirements for:

Construction projects
Residential developments
Commercial buildings
Electrical contractors
Control-panel builders
Industrial projects
Maintenance departments
Property management companies

For bulk orders, provide:

MCB specification + quantity + project/application.

MCBs for Electrical Contractors

Electrical contractors frequently need circuit breakers for installation projects.

PRO-LOGIC TECHNOLOGIES can assist with MCB requirements for:

Houses
Apartments
Offices
Shops
Schools
Hotels
Workshops
Warehouses
Commercial premises
Industrial facilities

Send your breaker schedule or bill of materials where applicable.

MCBs for Electricians

Electricians can contact us for individual replacement breakers or multiple MCBs for installation projects.

Provide the specification rather than simply asking for "a 32A breaker."

For example:

32A + 1P + Type C + required breaking capacity + AC application

This gives the supplier more useful information.

MCBs for Solar Installations

Solar systems may contain both AC and DC protection.

It is important to distinguish between:

AC MCBs
DC MCBs

DC solar circuits require protective devices specifically rated for the relevant DC voltage and fault conditions.

For solar MCB requirements, provide:

DC or AC
Voltage
Current
Number of poles
Application
Existing breaker photograph

MCBs for Inverter Systems

Inverter installations can contain AC input, AC output and DC circuits.

The appropriate protective device depends on which side of the inverter it is being installed on.

For example:

AC input breaker and DC battery/solar protection may require different device types.

Always specify whether the required breaker is for:

AC input
AC output
DC battery
PV/DC circuit
Auxiliary/control circuit

MCBs for Battery Systems

Battery systems can deliver very high fault currents.

Protection devices for battery circuits must be specifically suitable for the system's voltage, current and fault characteristics.

Do not use an ordinary AC MCB on a DC battery circuit unless the device is specifically rated and suitable for that application.

MCBs for Control Panels

Control panels often require small-rated MCBs for:

Control transformers
PLC supplies
Instrumentation
Auxiliary circuits
Lighting
Fans
Control equipment

The breaker rating should coordinate with the protected conductor and load.

MCBs for Motors

Motor circuits can have substantial starting currents.

Selecting an MCB for a motor requires consideration of:

Motor rating
Starting current
Circuit impedance
Cable rating
Breaker curve
Protection coordination

In many motor installations, an MCB may be combined with appropriate motor protection equipment.

MCBs for Pumps

Pump installations can have significant motor starting currents.

An appropriate protection system may involve:

MCB/MCCB
Contactor
Overload relay
Motor protection
Control switch
Float switch
Pressure switch

The exact configuration depends on the pump system.

MCBs for Air Conditioners

Air conditioners can have compressor startup currents and therefore require appropriate circuit protection.

When selecting a replacement MCB, consider:

Equipment rating
Manufacturer requirements
Cable size
Starting characteristics
Breaker curve
Circuit configuration

MCBs for Water Heaters

Water heaters are high-power electrical loads.

Their circuits should have correctly selected conductors and protective devices.

An MCB for a water heater should be selected according to the heater rating and installation design.

MCBs for Cookers and Ovens

Electric cookers and ovens can draw substantial current.

Their circuits may require dedicated protection based on:

Appliance rating
Supply voltage
Cable size
Installation method
Manufacturer specifications

MCBs for Workshops

Workshops may have multiple circuits supplying:

Power tools
Lighting
Compressors
Welders
Motors
Battery chargers
Machinery

Each circuit should have appropriate protection.

MCBs for Industrial Area Nairobi

PRO-LOGIC TECHNOLOGIES supports electrical component requirements for customers operating around Nairobi's industrial and commercial areas.

We can assist with MCB requirements for:

Workshops
Factories
Machinery
Control panels
Electrical contractors
Maintenance teams
Industrial installations

MCB Supplier in Nairobi CBD

Businesses and technicians in Nairobi CBD can contact PRO-LOGIC TECHNOLOGIES for MCB sourcing and availability.

We assist customers requiring electrical components for:

Offices
Shops
Commercial buildings
Maintenance work
Equipment repairs
Electrical installations

MCB Supplier in Westlands

We supply and source MCBs for customers requiring electrical protection products in Westlands and surrounding areas.

MCB Supplier in Eastlands

Customers in Nairobi's Eastlands areas can also contact PRO-LOGIC TECHNOLOGIES for MCB availability and sourcing.

MCB Supplier in Embakasi

We assist electricians, contractors, technicians and businesses requiring MCBs and other electrical components in Embakasi and surrounding areas.

MCB Supplier in South B and South C

PRO-LOGIC TECHNOLOGIES can assist customers looking for circuit breakers and electrical components in South B, South C and surrounding Nairobi areas.

MCB Supplier in Kiambu

Customers outside central Nairobi can contact us for component availability and delivery arrangements.

MCB Supplier in Thika

We can assist customers in Thika requiring MCBs and other electrical components, subject to availability and delivery arrangements.

MCB Supplier in Nakuru

Electrical contractors and technicians in Nakuru can contact PRO-LOGIC TECHNOLOGIES for MCB sourcing and other electrical component requirements.

MCB Supplier in Mombasa

Customers in Mombasa and the Coast region can contact us for MCB specifications, availability and supply arrangements.

MCB Supplier in Kisumu

PRO-LOGIC TECHNOLOGIES can assist customers in Kisumu requiring MCBs and other electrical components.

MCB Supplier in Eldoret

Electricians and contractors in Eldoret can contact us with their MCB requirements for availability and sourcing.

MCB Supplier Across Kenya

We serve customers beyond Nairobi depending on the product and delivery arrangements.

Customers may contact us from:

Nairobi
Mombasa
Kisumu
Nakuru
Eldoret
Thika
Kiambu
Machakos
Kitengela
Athi River
Naivasha
Nyeri
Meru
Kakamega
Bungoma
Busia
Siaya
Kisii
Migori
Homa Bay
Kitale
Kericho
Narok
Nanyuki
Malindi
Kilifi
Voi

How to Order an MCB from PRO-LOGIC TECHNOLOGIES

Ordering is simple.

Step 1 — Tell us what you need

For example:

32A MCB

Step 2 — Provide the complete specification

If known, provide:

32A, 1P, Type C, AC, required kA rating.

Step 3 — Send a photograph

If you are replacing an existing breaker, send a clear photograph.

Step 4 — Tell us the quantity

For example:

20 pieces.

Step 5 — Tell us the application

For example:

Residential distribution board.

Step 6 — Confirm availability and pricing

We will advise you on the available option.

Why Choose PRO-LOGIC TECHNOLOGIES?

Electrical and Electronics Expertise

We deal with electrical and electronic equipment and components, giving us practical understanding of component identification and application.

Wide Component Range

MCBs are part of a larger range of electrical and electronic components we supply and source.

Component Identification

Not sure what breaker you have? Send us a photograph.

Individual and Bulk Requirements

We can assist with individual replacements as well as larger project requirements.

Nairobi-Based Service

We support customers in Nairobi and can also serve customers in other parts of Kenya.

Repair and Technical Support

Because we also work with electrical and electronic equipment, we understand that customers may need more than simply a replacement component.

Complete Electrical Component Supply

MCBs are only one part of our electrical component range.

PRO-LOGIC TECHNOLOGIES also supplies and sources:

Circuit breakers
MCCBs
RCCBs
RCBOs
Isolators
Fuses
Fuse holders
Contactors
Relays
Overload relays
Switches
Push buttons
Selector switches
Terminal blocks
Connectors
Cable lugs
Resistors
Capacitors
Diodes
Transistors
MOSFETs
IGBTs
ICs
Voltage regulators
Sensors
Transformers
Inductors
Thermistors
Varistors
Optocouplers
PCB components
Power electronics components

MCB and Electrical Protection Solutions

A good electrical protection system normally involves more than one device.

Depending on the installation, protection may include:

MCB + RCCB/RCBO + surge protection + appropriate earthing + correct conductors + proper isolation.

Each device performs a different function.

The final protective arrangement should be designed and installed by a qualified professional according to the applicable electrical requirements.

Correct MCB Selection

When choosing an MCB, consider these ten factors:

1. Circuit voltage

Determine whether the circuit is AC or DC and identify the system voltage.

2. Current

Determine the expected operating current.

3. Cable capacity

The breaker must coordinate with the protected conductor.

4. Number of poles

Determine whether 1P, 2P, 3P or 4P is required.

5. Trip curve

Select the appropriate B, C, D or other applicable characteristic.

6. Breaking capacity

Determine the prospective short-circuit current and required breaker capability.

7. Load type

Consider whether the load is resistive, inductive, electronic or motor-driven.

8. Installation environment

Temperature and enclosure conditions can affect equipment performance.

9. Manufacturer compatibility

For replacement work, physical and electrical compatibility matter.

10. Applicable requirements

The installation should comply with relevant electrical codes and standards.

Do Not Oversize an MCB

One common mistake is replacing a frequently tripping MCB with a higher-rated breaker.

For example, if a 16A breaker trips repeatedly, replacing it with a 32A breaker without investigating the circuit can be dangerous.

The original breaker may be tripping because of:

Overload
Short circuit
Damaged cable
Faulty appliance
Incorrect circuit design
Loose connection

The correct response is to diagnose the cause rather than simply increasing the breaker rating.

MCB Maintenance

MCBs generally require less maintenance than some mechanical electrical devices, but electrical panels should still be inspected periodically by qualified personnel.

Inspection can include:

Visual condition
Signs of overheating
Loose terminals
Discoloration
Mechanical operation
Correct labeling
Appropriate circuit identification
Signs of moisture
Signs of arcing or damage

Any damaged breaker should be assessed and replaced appropriately.

Signs of a Damaged MCB

Potential warning signs include:

Burning smell
Melted plastic
Discoloration
Cracked housing
Loose mechanism
Excessive heat
Failure to reset
Unexplained repeated tripping
Visible arcing damage
Mechanical stiffness

If an MCB shows physical damage or signs of overheating, have the installation inspected.

MCB Replacement for Old Distribution Boards

Older distribution boards may use discontinued breaker designs.

If you need a replacement for an older breaker, send photographs showing:

Existing breaker
Distribution board
Manufacturer
Model
Current rating
Number of poles
Connection arrangement

We can help determine what information is required to identify a suitable replacement.

MCBs for New Electrical Installations

For a new installation, it is better to establish the required protection before purchasing breakers.

A project may require an MCB schedule showing:

Circuit	Load	Breaker	Poles	Curve
Lighting	As designed	MCB	1P	B/C
Socket circuit	As designed	MCB	1P	B/C
Dedicated appliance	As designed	MCB	1P	B/C
Motor	As designed	MCB/other protection	As required	As required
Three-phase load	As designed	MCB	3P/4P	As required

The final specifications must come from the electrical design.

MCBs for Construction Projects

Construction companies may require large quantities of breakers for:

Residential estates
Apartments
Offices
Shops
Commercial buildings
Warehouses
Hotels
Schools
Industrial buildings

Send your material schedule or component list to PRO-LOGIC TECHNOLOGIES for sourcing assistance.

MCBs for Property Managers

Property managers may require replacement breakers for electrical maintenance.

We can assist with requirements for:

Residential apartments
Office blocks
Shopping premises
Rental properties
Commercial buildings
Hotels
Institutions

MCBs for Electrical Maintenance

Maintenance technicians can contact us when a breaker needs replacement.

To minimize errors, send a photograph of the existing MCB before ordering.

MCBs for Emergency Electrical Repairs

When an electrical breaker fails unexpectedly, obtaining the correct replacement quickly can be important.

Contact PRO-LOGIC TECHNOLOGIES with:

Photo + breaker rating + pole configuration + application + quantity.

We can then advise on available options.

MCB Brand and Model Identification

There are many manufacturers and product families of MCBs.

Two breakers can have the same current rating but differ in:

Curve
Breaking capacity
Dimensions
Terminal configuration
Busbar compatibility
Accessories
Certification
Operating characteristics

This is why a complete specification is preferable to ordering by amperage alone.

MCB Installation

MCBs should be installed by appropriately qualified electrical personnel.

Installation can involve:

Correct isolation
Correct conductor identification
Appropriate terminal tightening
Proper busbar installation
Correct breaker orientation
Proper labeling
Verification
Testing

Do not work inside a live distribution board unless you are appropriately qualified and equipped to do so.

MCB Safety

Electricity can cause:

Electric shock
Burns
Fire
Arc flash
Equipment damage
Fatal injury

An MCB is not a substitute for safe electrical installation practices.

If an electrical circuit is repeatedly tripping, overheating, sparking or producing a burning smell, isolate it where safe to do so and contact a qualified electrician.

Frequently Asked Questions About MCBs

What does MCB mean?

MCB means Miniature Circuit Breaker.

What is the purpose of an MCB?

An MCB is designed to interrupt a circuit under specified overload and short-circuit conditions.

Do you sell MCBs in Nairobi?

Yes. PRO-LOGIC TECHNOLOGIES supplies and sources MCBs in Nairobi, subject to availability.

Do you sell MCBs across Kenya?

We can serve customers across Kenya depending on product availability and delivery arrangements.

What MCB ratings do you have?

We can supply or source various current ratings, including commonly used ratings from low-current circuits through higher-current applications.

Do you sell single-pole MCBs?

Yes, subject to availability.

Do you sell double-pole MCBs?

Yes, subject to availability.

Do you sell three-pole MCBs?

Yes, subject to availability.

Do you sell four-pole MCBs?

Yes, subject to availability.

Do you have Type B MCBs?

We can supply or source Type B devices depending on availability.

Do you have Type C MCBs?

Yes, Type C MCBs can be supplied or sourced depending on the required specification.

Do you have Type D MCBs?

Type D devices can be sourced according to application and availability.

Do you sell DC MCBs?

We can supply or source DC-rated circuit breakers. Tell us the DC voltage, current and application.

Can I replace a 16A MCB with a 32A MCB?

Not simply because the 16A breaker trips. The circuit must be assessed to determine why it is tripping and whether a different rating is actually appropriate.

Why does my MCB keep tripping?

Possible causes include overload, short circuit, damaged equipment, wiring faults, incorrect breaker selection or high starting current.

Can I send a photo?

Yes. A clear photo is one of the easiest ways to start identifying an existing breaker.

Do you supply MCBs wholesale?

Yes, we can assist with bulk requirements subject to availability.

Do you supply MCBs for control panels?

Yes. Provide the required current, voltage, poles, curve and application.

Do you supply MCBs for solar systems?

Yes, including appropriate DC-rated devices where available. Specify whether the application is AC or DC.

Do you supply other electrical components?

Yes. PRO-LOGIC TECHNOLOGIES supplies and sources a broad range of electrical and electronic components.

Order MCB Circuit Breakers from PRO-LOGIC TECHNOLOGIES

If you need an MCB circuit breaker in Nairobi or anywhere in Kenya, contact PRO-LOGIC TECHNOLOGIES.

Send us the following information:

MCB rating:
Number of poles:
Curve:
AC or DC:
Voltage:
Breaking capacity:
Quantity:
Application:
Brand/model if replacing an existing breaker:

If you are unsure about any of these specifications, send a clear photograph of the existing MCB.

We can help you determine what information is needed before sourcing the replacement.

PRO-LOGIC TECHNOLOGIES — MCB & Electrical Components Supplier

Serving Nairobi and customers across Kenya.

For MCB prices, availability, bulk orders, replacement breakers and electrical component sourcing, contact PRO-LOGIC TECHNOLOGIES today