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MCBs - Miniature Circuit Breakers

MCBs (Miniature Circuit Breakers)

What is an MCB?

MCB stands for Miniature Circuit Breaker. 

It's a small device designed to interrupt electrical flow when it detects abnormal conditions such as overload or short circuits. 

Essentially, it acts as a safety switch – protecting your electrical circuits and preventing potential hazards like fire or equipment damage.

How Do MCBs Work?

MCBs work by monitoring the flow of electricity through a circuit. 

When the current exceeds the MCB's rated capacity, or there's a short circuit, it trips - cutting off the power supply and preventing further damage.

Can I Change an MCB Myself?

Yes, MCBs are designed for easy installation and replacement. 

However, you’ll need to follow proper safety procedures and will need the knowledge and skills to handle electrical work safely. 

It's always best to consult a qualified electrician if you're unsure.

What Size MCB for Sockets?

The MCB's size depends on the electrical circuit's rating and the appliances connected to it. 

A 32A or 40A MCB is typically suitable for socket outlets commonly used in homes. 

However, you should consult electrical regulations and guidelines to pick the right size for your specific application.

Can MCBs Be Used for DC?

Yes, MCBs can be used for both AC (alternating current) and DC (direct current) circuits. 

However, you should choose MCBs specifically rated for DC applications to ensure you get the right protection and performance.

What Are the Types of MCB?

Various types of MCBs are available, including Type B, Type C, and Type D, each designed to trip at different levels of overload or short circuit currents.

What is the Tripping Mechanism of an MCB?

The tripping mechanism of an MCB is typically based on either thermal or magnetic principles. 

Thermal MCBs respond to the heat generated by overcurrent, while magnetic MCBs detect sudden surges in current. 

Some MCBs feature both mechanisms for better protection.

Where Are MCBs Installed?

MCBs are installed in electrical distribution boards, consumer units, or fuse boxes to protect individual circuits or groups of circuits within a building. 

They are commonly found in residential, commercial, and industrial settings.

Can I Reset an MCB?

Yes, most MCBs feature a reset function that allows you to restore power to the circuit after it has tripped. 

Simply switch the MCB back to the "on" position after fixing the cause of the trip.

Invest in quality MCBs today to ensure the safety and reliability of your electrical installations. 

Browse our selection of MCBs to find the perfect solution for your needs!

  • Original price £0.00 - Original price £0.00
    Original price £0.00
    £18.88 inc VAT
    £18.88 - £18.88
    Current price £18.88 inc VAT
    £15.73 ex VAT

    ABB MCB Triple Pole Compact Type C 10A 6Ka 2CDS253001R0104

    ABB
    Low stock

    ABB 2CDS253001R0104 3 Pole 10A Type C MCB with Failsafe bi-directional cylinder-lift screw terminal. This System pro M compact S203-C10 MCB is curr...

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    Original price £0.00 - Original price £0.00
    Original price £0.00
    £18.88 inc VAT
    £18.88 - £18.88
    Current price £18.88 inc VAT
    £15.73 ex VAT
  • Original price £48.30
    Original price £48.30 - Original price £48.30
    Original price £48.30
    Current price £10.28 inc VAT
    £10.28 - £10.28
    Current price £10.28 inc VAT
    £8.57 ex VAT

    Schneider A9F45210 Acti9 iC60N 2p 10A D MCB Miniature Circuit Breaker

    Schneider Electric
    Low stock

    ACTI9 IC60N 2P 10A D MCB • This Acti9 iC60N is a low voltage miniature circuit breaker (MCB). • It is a 2P circuit breaker with 2 protected poles...

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    Original price £48.30
    Original price £48.30 - Original price £48.30
    Original price £48.30
    Current price £10.28 inc VAT
    £10.28 - £10.28
    Current price £10.28 inc VAT
    £8.57 ex VAT
    Save 79% Save %
  • Original price £10.92
    Original price £10.92 - Original price £10.92
    Original price £10.92
    Current price £2.42 inc VAT
    £2.42 - £2.42
    Current price £2.42 inc VAT
    £2.02 ex VAT

    Wylex NSB310-C MCB TP Type C 10A 6kA

    Wylex
    Out of stock

    Original price £10.92
    Original price £10.92 - Original price £10.92
    Original price £10.92
    Current price £2.42 inc VAT
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    Current price £2.42 inc VAT
    £2.02 ex VAT
    Sold out
  • Original price £91.91
    Original price £91.91 - Original price £91.91
    Original price £91.91
    Current price £35.36 inc VAT
    £35.36 - £35.36
    Current price £35.36 inc VAT
    £29.47 ex VAT

    Schneider A9F53410 Merlin Gerin Acti9 IC60H 4 Pole 10A B MCB Miniature Circuit Breaker

    Schneider Electric
    In stock

    This Acti9 iC60H is a multistandard low voltage miniature circuit breaker (MCB) with double tunnel terminals. It is a 4P circuit breaker with 4 pro...

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    Original price £91.91
    Original price £91.91 - Original price £91.91
    Original price £91.91
    Current price £35.36 inc VAT
    £35.36 - £35.36
    Current price £35.36 inc VAT
    £29.47 ex VAT
    Save 62% Save %
  • Original price £8.93
    Original price £8.93 - Original price £8.93
    Original price £8.93
    Current price £1.05 inc VAT
    £1.05 - £1.05
    Current price £1.05 inc VAT
    £0.88 ex VAT

    Schneider C60HB110 MCB C60H SP Type B 10A 15KA

    Schneider Electric
    Out of stock

    Original price £8.93
    Original price £8.93 - Original price £8.93
    Original price £8.93
    Current price £1.05 inc VAT
    £1.05 - £1.05
    Current price £1.05 inc VAT
    £0.88 ex VAT
    Sold out
  • Original price £1.10 - Original price £1.10
    Original price
    £1.10 inc VAT
    £1.10 - £1.10
    Current price £1.10 inc VAT
    £0.92 ex VAT

    Schneider DOM10B6 Domae Style Miniature Circuit Breaker Curve B 10A SP 230-240V AC

    Schneider Electric
    In stock

    Schneider Electric DOM10B6 1 Pole 10A B curve domae style circuit breaker with thermal magnetic trip unit technology. It features 230 to 240V AC ra...

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    Original price £1.10 - Original price £1.10
    Original price
    £1.10 inc VAT
    £1.10 - £1.10
    Current price £1.10 inc VAT
    £0.92 ex VAT
  • Original price £51.56
    Original price £51.56 - Original price £51.56
    Original price £51.56
    Current price £10.48 inc VAT
    £10.48 - £10.48
    Current price £10.48 inc VAT
    £8.73 ex VAT

    Eaton 101QB MCB SP Type 1 10A

    Eaton
    Low stock

    101QB • Complete and configurable enclosures MCBs, MCCBs, ACBs

    Original price £51.56
    Original price £51.56 - Original price £51.56
    Original price £51.56
    Current price £10.48 inc VAT
    £10.48 - £10.48
    Current price £10.48 inc VAT
    £8.73 ex VAT
    Save 80% Save %
  • Original price £2.60
    Original price £2.60 - Original price £2.60
    Original price £2.60
    Current price £0.61 inc VAT
    £0.61 - £0.61
    Current price £0.61 inc VAT
    £0.51 ex VAT

    Eaton EAD10B Miniature Circuit Breaker (MCB) SP Type B 10A Grey

    Eaton
    In stock

    Miniature circuit breaker (MCB) • DIN rail mountable • Toggle position for positive contact indication • Selectivity Class 3 • Calibration temperat...

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    Original price £2.60
    Original price £2.60 - Original price £2.60
    Original price £2.60
    Current price £0.61 inc VAT
    £0.61 - £0.61
    Current price £0.61 inc VAT
    £0.51 ex VAT
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  • Original price £2.33
    Original price £2.33 - Original price £2.33
    Original price £2.33
    Current price £0.68 inc VAT
    £0.68 - £0.68
    Current price £0.68 inc VAT
    £0.57 ex VAT

    Legrand 419750 MCB RX3 SP Type B 10A 6KA 1 Module

    Legrand
    In stock

    Legrand RX3 Residential DIN Rail Miniature Circuit Breaker has a rated short circuit capacity of 6kA and type-B trip curve characteristics. • BS EN...

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    Original price £2.33
    Original price £2.33 - Original price £2.33
    Original price £2.33
    Current price £0.68 inc VAT
    £0.68 - £0.68
    Current price £0.68 inc VAT
    £0.57 ex VAT
    Save 71% Save %
  • Original price £30.74
    Original price £30.74 - Original price £30.74
    Original price £30.74
    Current price £14.35 inc VAT
    £14.35 - £14.35
    Current price £14.35 inc VAT
    £11.96 ex VAT

    Dorman Smith K3PB10 MCB K Series Type B TP 10A 10KA

    Dorman Smith
    Low stock

    Dorman Smith Switchgear K3PB10 Loadlimiter 63 MCB K Series Type B TP 10A 10kA • Product: Circuit Breaker • Type: MCB • Pole Configuration: TP • Tri...

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    Original price £30.74
    Original price £30.74 - Original price £30.74
    Original price £30.74
    Current price £14.35 inc VAT
    £14.35 - £14.35
    Current price £14.35 inc VAT
    £11.96 ex VAT
    Save 53% Save %
  • Original price £1.38 - Original price £1.38
    Original price
    £1.38 inc VAT
    £1.38 - £1.38
    Current price £1.38 inc VAT
    £1.15 ex VAT

    Volex VB10-B MCB Single Pole Type B 10A 6Ka

    Volex
    In stock

    Volex Accessories VB10-B MCB SP Type B 10A 6kA • Product: Circuit Breaker • Type: MCB • Pole Configuration: SP • Trip Type: Type B • Short Circuit ...

    View full details
    Original price £1.38 - Original price £1.38
    Original price
    £1.38 inc VAT
    £1.38 - £1.38
    Current price £1.38 inc VAT
    £1.15 ex VAT

MCBs (Miniature Circuit Breakers)

What is an MCB?

MCB stands for Miniature Circuit Breaker. 

It's a small device designed to interrupt electrical flow when it detects abnormal conditions such as overload or short circuits. 

Essentially, it acts as a safety switch – protecting your electrical circuits and preventing potential hazards like fire or equipment damage.

How Do MCBs Work?

MCBs work by monitoring the flow of electricity through a circuit. 

When the current exceeds the MCB's rated capacity, or there's a short circuit, it trips - cutting off the power supply and preventing further damage.

Can I Change an MCB Myself?

Yes, MCBs are designed for easy installation and replacement. 

However, you’ll need to follow proper safety procedures and will need the knowledge and skills to handle electrical work safely. 

It's always best to consult a qualified electrician if you're unsure.

What Size MCB for Sockets?

The MCB's size depends on the electrical circuit's rating and the appliances connected to it. 

A 32A or 40A MCB is typically suitable for socket outlets commonly used in homes. 

However, you should consult electrical regulations and guidelines to pick the right size for your specific application.

Can MCBs Be Used for DC?

Yes, MCBs can be used for both AC (alternating current) and DC (direct current) circuits. 

However, you should choose MCBs specifically rated for DC applications to ensure you get the right protection and performance.

What Are the Types of MCB?

Various types of MCBs are available, including Type B, Type C, and Type D, each designed to trip at different levels of overload or short circuit currents.

What is the Tripping Mechanism of an MCB?

The tripping mechanism of an MCB is typically based on either thermal or magnetic principles. 

Thermal MCBs respond to the heat generated by overcurrent, while magnetic MCBs detect sudden surges in current. 

Some MCBs feature both mechanisms for better protection.

Where Are MCBs Installed?

MCBs are installed in electrical distribution boards, consumer units, or fuse boxes to protect individual circuits or groups of circuits within a building. 

They are commonly found in residential, commercial, and industrial settings.

Can I Reset an MCB?

Yes, most MCBs feature a reset function that allows you to restore power to the circuit after it has tripped. 

Simply switch the MCB back to the "on" position after fixing the cause of the trip.

Invest in quality MCBs today to ensure the safety and reliability of your electrical installations. 

Browse our selection of MCBs to find the perfect solution for your needs!

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