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MCB Miniature Circuit Breakers

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MCBs — Miniature Circuit Breakers for Domestic & Commercial Installations RS Electrical Supplies stocks a wide range of MCBs (Miniature Circuit Breakers) for use in consumer units and distribution boards across domestic, commercial, and...

MCBs — Miniature Circuit Breakers for Domestic & Commercial Installations

RS Electrical Supplies stocks a wide range of MCBs (Miniature Circuit Breakers) for use in consumer units and distribution boards across domestic, commercial, and light industrial applications. MCBs provide reliable overload and short circuit protection, automatically disconnecting a circuit when a fault is detected.

Choosing the Right MCB for Your Installation

MCBs are available in Type B, Type C, and Type D trip characteristics to suit different load types — Type B for standard domestic circuits, Type C for commercial loads with higher inrush currents, and Type D for specialist industrial equipment. Our range covers a variety of current ratings from 6A to 63A, including popular options such as 10A, 16A, 20A, 32A, and 50A, from trusted brands including BG, Fusebox, and Hager, compatible with their respective consumer unit and distribution board ranges. All products comply with BS EN 60898 and include single pole options where required.

Can't find the MCB you need? Contact us — we can source most circuit protection products on the market. 

MCBs — Miniature Circuit Breakers for Domestic & Commercial Installations RS Electrical Supplies stocks a wide range of MCBs (Miniature Circuit Breakers) for use in consumer units and distribution boards across domestic, commercial, and...

MCBs — Miniature Circuit Breakers for Domestic & Commercial Installations

RS Electrical Supplies stocks a wide range of MCBs (Miniature Circuit Breakers) for use in consumer units and distribution boards across domestic, commercial, and light industrial applications. MCBs provide reliable overload and short circuit protection, automatically disconnecting a circuit when a fault is detected.

Choosing the Right MCB for Your Installation

MCBs are available in Type B, Type C, and Type D trip characteristics to suit different load types — Type B for standard domestic circuits, Type C for commercial loads with higher inrush currents, and Type D for specialist industrial equipment. Our range covers a variety of current ratings from 6A to 63A, including popular options such as 10A, 16A, 20A, 32A, and 50A, from trusted brands including BG, Fusebox, and Hager, compatible with their respective consumer unit and distribution board ranges. All products comply with BS EN 60898 and include single pole options where required.

Can't find the MCB you need? Contact us — we can source most circuit protection products on the market. 

BG Circuit Protection B Curve MCB 6A CUMB6

BG Electrical
£2.95 - £2.95
£2.95
£2.95 - £2.95
£2.95

This 6A MCB is to be used with BG Fortress Consumer Units for protection from short circuit and overload faults.

£2.95 - £2.95
£2.95
£2.95 - £2.95
£2.95

BG Circuit Protection B Curve MCB 32A CUMB32

BG Electrical
£2.95 - £2.95
£2.95
£2.95 - £2.95
£2.95

This 32A MCB is to be used with BG Fortress Consumer Units for protection from short circuit and overload faults.

£2.95 - £2.95
£2.95
£2.95 - £2.95
£2.95
BG Fortress B Curve MCB 50A CUMB50 Available from RS Electrical Supplies

BG Circuit Protection B Curve MCB 50A CUMB50

BG Electrical
£2.95 - £2.95
£2.95
£2.95 - £2.95
£2.95

This 50A MCB is to be used with BG Fortress Consumer Units for protection from short circuit and overload faults.

£2.95 - £2.95
£2.95
£2.95 - £2.95
£2.95

BG Circuit Protection B Curve MCB 40A CUMB40

BG Electrical
£2.95 - £2.95
£2.95
£2.95 - £2.95
£2.95

This 40A MCB is to be used with BG Fortress Consumer Units for protection from short circuit and overload faults.

£2.95 - £2.95
£2.95
£2.95 - £2.95
£2.95

BG Circuit Protection B Curve MCB 20A CUMB20

BG Electrical
£2.95 - £2.95
£2.95
£2.95 - £2.95
£2.95

This 20A MCB is to be used with BG Fortress Consumer Units for protection from short circuit and overload faults.

£2.95 - £2.95
£2.95
£2.95 - £2.95
£2.95

BG Circuit Protection B Curve MCB 16A CUMB16

BG Electrical
£2.95 - £2.95
£2.95
£2.95 - £2.95
£2.95

This 16A MCB is to be used with BG Fortress Consumer Units for protection from short circuit and overload faults.

£2.95 - £2.95
£2.95
£2.95 - £2.95
£2.95

BG Circuit Protection C Curve MCB 20A CUMC20

BG Electrical
£3.95 - £3.95
£3.95
£3.95 - £3.95
£3.95

This 20A MCB is to be used with BG Fortress Consumer Units for protection from short circuit and overload faults.

£3.95 - £3.95
£3.95
£3.95 - £3.95
£3.95

BG Circuit Protection C Curve MCB 32A CUMC32

BG Electrical
£3.95 - £3.95
£3.95
£3.95 - £3.95
£3.95

This 32A MCB is to be used with BG Fortress Consumer Units for protection from short circuit and overload faults.

£3.95 - £3.95
£3.95
£3.95 - £3.95
£3.95

BG Circuit Protection C Curve MCB 40A CUMC40

BG Electrical
£3.95 - £3.95
£3.95
£3.95 - £3.95
£3.95

This 40A MCB is to be used with BG Fortress Consumer Units for protection from short circuit and overload faults.

£3.95 - £3.95
£3.95
£3.95 - £3.95
£3.95

BG Circuit Protection C Curve MCB 50A CUMC50

BG Electrical
£3.95 - £3.95
£3.95
£3.95 - £3.95
£3.95

This 50A MCB is to be used with BG Fortress Consumer Units for protection from short circuit and overload faults.

£3.95 - £3.95
£3.95
£3.95 - £3.95
£3.95

BG Circuit Protection C Curve MCB 16A CUMC16

BG Electrical
£3.95 - £3.95
£3.95
£3.95 - £3.95
£3.95

This 16A MCB is to be used with BG Fortress Consumer Units for protection from short circuit and overload faults.

£3.95 - £3.95
£3.95
£3.95 - £3.95
£3.95

BG Circuit Protection C Curve MCB 10A CUMC10

BG Electrical
£3.95 - £3.95
£3.95
£3.95 - £3.95
£3.95

This 10A MCB is to be used with BG Fortress Consumer Units for protection from short circuit and overload faults.

£3.95 - £3.95
£3.95
£3.95 - £3.95
£3.95

BG Circuit Protection B Curve MCB 10A CUMB10

BG Electrical
£2.95 - £2.95
£2.95
£2.95 - £2.95
£2.95

This 10A MCB is to be used with BG Fortress Consumer Units for protection from short circuit and overload faults.

£2.95 - £2.95
£2.95
£2.95 - £2.95
£2.95

BG Circuit Protection C Curve MCB 6A CUMC6

BG Electrical
£3.95 - £3.95
£3.95
£3.95 - £3.95
£3.95

This 6A MCB is to be used with BG Fortress Consumer Units for protection from short circuit and overload faults.

£3.95 - £3.95
£3.95
£3.95 - £3.95
£3.95
Sync Energy CFEV6W_1 EV Consumer Unit | RS Electrical Supplies

Sync Energy CFEV6W EV Enclosure 100A Main Switch SPD

Sync Energy
£63.00 - £63.00
£63.00
£63.00 - £63.00
£63.00

Sync Energy CFEV6W 5 Module Enclosure 100A Main Switch 40A MCB Type 2 SPD + 1 Spare Way White EV consumer unit for charger circuit protection Sync ...

View full details
£63.00 - £63.00
£63.00
£63.00 - £63.00
£63.00
Sync Energy CFEV5A_1 EV Unit | RS Electrical Supplies

Sync Energy CFEV5A EV Consumer Unit 40A 30mA RCD SPD Grey

Sync Energy
£73.50 - £73.50
£73.50
£73.50 - £73.50
£73.50

Sync Energy CFEV5A 5 Module Enclosure 40A 30mA RCD 40A MCB Type 2 SPD + 1 Spare Way Grey EV Consumer Unit for Charging Installations The Sync Energ...

View full details
£73.50 - £73.50
£73.50
£73.50 - £73.50
£73.50
New

FuseBox 50A C Curve 6kA Single Pole MCB MT06C501

Fusebox
£3.36 - £3.36
£3.36
£3.36 - £3.36
£3.36

The FuseBox 50A C Curve 6kA Single Pole MCB MT06C501 provides overload and short-circuit protection for compatible FuseBox consumer units and distr...

View full details
£3.36 - £3.36
£3.36
£3.36 - £3.36
£3.36
New

FuseBox 32A C Curve 6kA Single Pole MCB MT06C321

Fusebox
£3.36 - £3.36
£3.36
£3.36 - £3.36
£3.36

The FuseBox 32A C Curve 6kA Single Pole MCB MT06C321 provides overload and short-circuit protection for compatible FuseBox consumer units and distr...

View full details
£3.36 - £3.36
£3.36
£3.36 - £3.36
£3.36
New

FuseBox 40A C Curve 6kA Single Pole MCB MT06C401

Fusebox
£3.36 - £3.36
£3.36
£3.36 - £3.36
£3.36

The FuseBox 40A C Curve 6kA Single Pole MCB MT06C401 provides overload and short-circuit protection for compatible FuseBox consumer units and distr...

View full details
£3.36 - £3.36
£3.36
£3.36 - £3.36
£3.36
New

FuseBox 63A C Curve 6kA Single Pole MCB MT06C631

Fusebox
£3.79 - £3.79
£3.79
£3.79 - £3.79
£3.79

The FuseBox 63A C Curve 6kA Single Pole MCB MT06C631 provides overload and short-circuit protection for compatible FuseBox consumer units and distr...

View full details
£3.79 - £3.79
£3.79
£3.79 - £3.79
£3.79
New

FuseBox 20A C Curve 6kA Single Pole MCB MT06C201

Fusebox
£3.36 - £3.36
£3.36
£3.36 - £3.36
£3.36

The FuseBox 20A C Curve 6kA Single Pole MCB MT06C201 provides overload and short-circuit protection for compatible FuseBox consumer units and distr...

View full details
£3.36 - £3.36
£3.36
£3.36 - £3.36
£3.36
New

FuseBox 25A C Curve 6kA Single Pole MCB MT06C251

Fusebox
£3.36 - £3.36
£3.36
£3.36 - £3.36
£3.36

The FuseBox 25A C Curve 6kA Single Pole MCB MT06C251 provides overload and short-circuit protection for compatible FuseBox consumer units and distr...

View full details
£3.36 - £3.36
£3.36
£3.36 - £3.36
£3.36
New

FuseBox 16A C Curve 6kA Single Pole MCB MT06C161

Fusebox
£3.36 - £3.36
£3.36
£3.36 - £3.36
£3.36

The FuseBox 16A C Curve 6kA Single Pole MCB MT06C161 provides overload and short-circuit protection for compatible FuseBox consumer units and distr...

View full details
£3.36 - £3.36
£3.36
£3.36 - £3.36
£3.36
New

FuseBox 6A C Curve 6kA Single Pole MCB MT06C061

Fusebox
£3.36 - £3.36
£3.36
£3.36 - £3.36
£3.36

The FuseBox 6A C Curve 6kA Single Pole MCB MT06C061 provides overload and short-circuit protection for compatible FuseBox consumer units and distri...

View full details
£3.36 - £3.36
£3.36
£3.36 - £3.36
£3.36

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