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. You can find out more in our complete guide to MCBs.

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 Model Number Number of Poles Tripping Characteristics Series Range Circuit Breaker Type Mounting Style Overall Depth Overall Width Rated AC Voltage Tripping Mechanism
RS Stock No. 850-8599
Mfr. Part No.EZ9F16106
£5.51
Each
Units
6A - 1 Type B EZ9 Easy 9 MCB DIN Rail Mount 72mm 18mm 230V Thermal-Magnetic
RS Stock No. 850-8628
Mfr. Part No.EZ9F66110
£3.01
Each
Units
10A - 1 Type C EZ9 Easy 9 - - - - - -
RS Stock No. 850-8622
Mfr. Part No.EZ9F66116
£3.01
Each
Units
16A - 1 Type C EZ9 Easy 9 - - - - - -
RS Stock No. 850-8619
Mfr. Part No.EZ9F16132
£5.68
Each
Units
32A - 1 Type B EZ9 Easy 9 - - - - - -
RS Stock No. 850-8596
Mfr. Part No.EZ9F16103
£3.01
Each
Units
3A - 1 Type B EZ9 Easy 9 - - - - - -
RS Stock No. 850-8625
Mfr. Part No.EZ9F66106
£3.01
Each
Units
6A - 1 Type C EZ9 Easy 9 - - - - - -
RS Stock No. 850-8631
Mfr. Part No.EZ9F66120
£3.01
Each
Units
20A - 1 Type C EZ9 Easy 9 - - - - - -
RS Stock No. 850-8634
Mfr. Part No.EZ9F66132
£3.01
Each
Units
32A - 1 Type C EZ9 Easy 9 - - - - - -
RS Stock No. 850-8593
Mfr. Part No.EZ9F16110
£3.01
Each
Units
10A - 1 Type B EZ9 Easy 9 - - - - - -
RS Stock No. 850-8606
Mfr. Part No.EZ9F16120
£2.94
Each
Units
20A - 1 Type B EZ9 Easy 9 - - - - - -
RS Stock No. 850-8600
Mfr. Part No.EZ9F16125
£3.01
Each
Units
25A - 1 Type B EZ9 Easy 9 - - - - - -
RS Stock No. 850-8616
Mfr. Part No.EZ9F16150
£3.01
Each
Units
50A - 1 Type B EZ9 Easy 9 - - - - - -
RS Stock No. 850-8612
Mfr. Part No.EZ9F16140
£3.01
Each
Units
40A - 1 Type B EZ9 Easy 9 - - - - - -
RS Stock No. 850-8638
Mfr. Part No.EZ9F66140
£3.21
Each
Units
40A - 1 Type C EZ9 Easy 9 - - - - - -
RS Stock No. 850-8647
Mfr. Part No.EZ9F66150
£3.16
Each
Units
50A - 1 Type C EZ9 Easy 9 - - - - - -
RS Stock No. 293-1423
Mfr. Part No.0 058 12
BrandLegrand
£8.52
Each
Units
20A - 1 - - - - - - - - -
RS Stock No. 200-6169
Mfr. Part No.A9PA2616
£23.71
Each
Units
16A IDD40T XA 1 Type C - Acti9 - - - - - -
RS Stock No. 211-2453
Mfr. Part No.M9F43305
£113.63
Each
Units
5A M9F43305 3 Type D C60BP Multi 9 - - - - - -
RS Stock No. 200-6170
Mfr. Part No.A9PA2632
£27.32
Each
Units
32A IDD40T XA 1 Type C - Acti9 - - - - - -
RS Stock No. 211-2388
Mfr. Part No.M9F23113
£15.66
Each
Units
13A M9F23113 1 Type D C60SP Multi 9 - - - - - -