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. 850-8596
Mfr. Part No.EZ9F16103
SGD6.08
Each
units
3 A 1 Type B EZ9 Easy 9 - - - - - - - - -
RS Stock No. 850-8593
Mfr. Part No.EZ9F16110
SGD6.06
Each
units
10 A 1 Type B EZ9 Easy 9 - - - - - - - - -
RS Stock No. 850-8606
Mfr. Part No.EZ9F16120
SGD5.98
Each
units
20 A 1 Type B EZ9 Easy 9 - - - - - - - - -
RS Stock No. 850-8603
Mfr. Part No.EZ9F16116
SGD5.89
Each
units
16 A 1 Type B EZ9 Easy 9 - - DIN Rail Mount 72mm - - 18mm - Thermal-Magnetic
RS Stock No. 850-8599
Mfr. Part No.EZ9F16106
SGD6.38
Each
units
6 A 1 Type B EZ9 Easy 9 - MCB DIN Rail Mount 72mm - - 18mm 230V Thermal-Magnetic
RS Stock No. 850-8622
Mfr. Part No.EZ9F66116
SGD6.20
Each
units
16 A 1 Type C EZ9 Easy 9 - - - - - - - - -
RS Stock No. 850-8628
Mfr. Part No.EZ9F66110
SGD6.06
Each
units
10 A 1 Type C EZ9 Easy 9 - - - - - - - - -
RS Stock No. 191-7230
Mfr. Part No.ALB201
BrandEaton
SGD16.81
Each
units
20 A 1 Type B ALB Memera - - - - - - - - -
RS Stock No. 798-2227
Mfr. Part No.EUB163B
BrandEuropa
SGD4.98
Each
units
63 A 1 Type B EUB EU - - - - - - - 230 V ac, 240 V ac -
RS Stock No. 860-8693
Mfr. Part No.5TT3421
BrandSiemens
SGD152.08
Each
units
4 A - - 5TT3 Sentron - - - - - - - - -
RS Stock No. 850-8631
Mfr. Part No.EZ9F66120
SGD6.38
Each
units
20 A 1 Type C EZ9 Easy 9 - - - - - - - - -
RS Stock No. 191-7218
Mfr. Part No.ALB101
BrandEaton
SGD18.20
Each
units
10 A 1 Type B ALB Memera - - - - - - - - -
RS Stock No. 850-8634
Mfr. Part No.EZ9F66132
SGD6.20
Each
units
32 A 1 Type C EZ9 Easy 9 - - - - - - - - -
RS Stock No. 293-1423
Mfr. Part No.0 058 12
BrandLegrand
SGD13.02
Each
units
20 A 1 - - - - - - - - - - - -
RS Stock No. 191-7224
Mfr. Part No.ALB161
BrandEaton
SGD17.69
Each
units
16 A 1 Type B ALB Memera - - - - - - - - -
RS Stock No. 381-5811
Mfr. Part No.8720S
SGD8.54
Each
units
20 A 1 Type C 8720S Sentry - - - - - - - - -
RS Stock No. 798-2209
Mfr. Part No.EUB132B
BrandEuropa
SGD4.30
Each
units
32 A 1 Type B EUB EU - - - - - - - 230 V ac, 240 V ac -
RS Stock No. 419-577
Mfr. Part No.5903S
SGD7.69
Each
units
3 A 1 Type B 5903S, EMBH, S800, Series 1 Sentry - - - - - - - - -
RS Stock No. 850-8625
Mfr. Part No.EZ9F66106
SGD6.20
Each
units
6 A 1 Type C EZ9 Easy 9 - - - - - - - - -
RS Stock No. 798-2211
Mfr. Part No.EUB125B
BrandEuropa
SGD5.05
Each
units
25 A 1 Type B EUB EU - - - - - - - 230 V ac, 240 V ac -
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