Residential MCBs

Residential MCBs (miniature circuit breakers) are used in domestic consumer units and switch fuses to break the circuit in case of a fault. They are usually used to protect small appliances or control circuits, and have a fixed trip setting.

How do residential MCBs work?

Residential MCBs are a very low voltage type of circuit breaker. When a current or voltage is interrupted, an arc is generated, which must be controlled and extinguished so that the circuit can function again.

MCBs utilise air alone to break the arc by dividing it into smaller arcs using a series of insulated parallel metal plates known as arc chutes to cool each section down separately. Once the fault is fixed, the contacts are closed once more to restore power to the circuit.

Types of residential MCBs

Residential MCBs can have differing current and voltage ratings, lead times and numbers of poles. Their dimensions can also vary, though all are relatively small.


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Description Price Current Rating Number of Poles Tripping Characteristics Series Range Breaking Capacity at Maximum Voltage Rating Circuit Breaker Type Mounting Style Overall Depth Overall Dimensions Overall Length Overall Width Rated AC Voltage Tripping Mechanism
RS Stock No. 850-8599
Mfr. Part No.EZ9F16106
MYR19.17
Each
units
6 A 1 Type B EZ9 Easy 9 - MCB DIN Rail Mount 72mm - - 18mm 230V Thermal-Magnetic
RS Stock No. 850-8606
Mfr. Part No.EZ9F16120
MYR18.50
Each
units
20 A 1 Type B EZ9 Easy 9 - - - - - - - - -
RS Stock No. 381-5811
Mfr. Part No.8720S
MYR32.17
Each
units
20 A 1 Type C 8720S Sentry - - - - - - - - -
RS Stock No. 850-8596
Mfr. Part No.EZ9F16103
MYR21.04
Each
units
3 A 1 Type B EZ9 Easy 9 - - - - - - - - -
RS Stock No. 850-8628
Mfr. Part No.EZ9F66110
MYR19.04
Each
units
10 A 1 Type C EZ9 Easy 9 - - - - - - - - -
RS Stock No. 850-8593
Mfr. Part No.EZ9F16110
MYR19.04
Each
units
10 A 1 Type B EZ9 Easy 9 - - - - - - - - -
RS Stock No. 199-2966
Mfr. Part No.RS/B20
BrandWylex
MYR77.22
Each
units
20 A 1 Type B B Series Plug In - - - - - - - - -
RS Stock No. 850-8631
Mfr. Part No.EZ9F66120
MYR20.04
Each
units
20 A 1 Type C EZ9 Easy 9 - - - - - - - - -
RS Stock No. 850-8619
Mfr. Part No.EZ9F16132
MYR19.54
Each
units
32 A 1 Type B EZ9 Easy 9 - - - - - - - - -
RS Stock No. 381-5782
Mfr. Part No.8706S
MYR34.85
Each
units
6 A 1 Type C 8706S Sentry - - - - - - - - -
RS Stock No. 191-7230
Mfr. Part No.ALB201
BrandEaton
MYR52.79
Each
units
20 A 1 Type B ALB Memera - - - - - - - - -
RS Stock No. 798-2218
Mfr. Part No.EUB120B
BrandEuropa
MYR13.50
Each
units
20 A 1 Type B EUB EU - - - - - - - 230 V ac, 240 V ac -
RS Stock No. 850-8622
Mfr. Part No.EZ9F66116
MYR19.47
Each
units
16 A 1 Type C EZ9 Easy 9 - - - - - - - - -
RS Stock No. 191-7202
Mfr. Part No.ALB061
BrandEaton
MYR72.02
Each
units
6 A 1 Type B ALB Memera - - - - - - - - -
RS Stock No. 199-2972
Mfr. Part No.RS/B32
BrandWylex
MYR93.24
Each
units
32 A 1 Type B B Series Plug In - - - - - - - - -
RS Stock No. 381-5805
Mfr. Part No.8716S
MYR28.98
Each
units
16 A 1 Type C 8716S Sentry - - - - - - - - -
RS Stock No. 419-577
Mfr. Part No.5903S
MYR28.98
Each
units
3 A 1 Type B 5903S, EMBH, S800, Series 1 Sentry - - - - - - - - -
RS Stock No. 419-612
Mfr. Part No.5920S
MYR34.85
Each
units
20 A 1 Type B 5920S, EMBH, EUB, S800 Sentry - - - - - - - - -
RS Stock No. 293-1417
Mfr. Part No.0 058 11
BrandLegrand
MYR42.13
Each
units
16 A 1 - - - - - - - - - - - -
RS Stock No. 199-2938
Mfr. Part No.RSB10
BrandWylex
MYR64.98
Each
units
10 A 1 Type B B Series Plug In - - - - - - - - -
Related Products
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Description:
These devices complement our range of MK Series enclosures. Manufactured to BS EN 608986kA breaking capacityType B (59xxS series) and type C (87xxS series) versions availableProvides positive contact indication in accordance with IEE 16th edition wiring regulationsThermal magnetic operation provides ...
MEM 250V DIN rail mount RCD’s and MCB’s ...
Description:
MEM 250V DIN rail mount RCD’s and MCB’s etc, for use as spares and replacements in Memera consumer units. Complies with BS EN 60898Accept cable up to 25mm²Thermal/magnetic operationPositive contact indication (red-on, green-off)1 pole.
Colour coded, single pole MCBs for new and ...
Description:
Colour coded, single pole MCBs for new and existing consumer units and switch fusesComplies with BS EN 60898:1991Type B tripping characteristics3kA breaking capacity.
Brought to you by Legrand, these cutout fuse ...
Description:
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