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庫存編號 850-8599
製造零件編號EZ9F16106
HK$38.07
單位
6 A 1 Type B EZ9 Easy 9 - MCB DIN Rail Mount 72mm - - 18mm 230V Thermal-Magnetic
RS庫存編號 850-8593
製造零件編號EZ9F16110
HK$38.07
單位
10 A 1 Type B EZ9 Easy 9 - - - - - - - - -
RS庫存編號 850-8596
製造零件編號EZ9F16103
HK$40.21
單位
3 A 1 Type B EZ9 Easy 9 - - - - - - - - -
RS庫存編號 850-8628
製造零件編號EZ9F66110
HK$40.08
單位
10 A 1 Type C EZ9 Easy 9 - - - - - - - - -
RS庫存編號 850-8638
製造零件編號EZ9F66140
HK$36.96
單位
40 A 1 Type C EZ9 Easy 9 - - - - - - - - -
RS庫存編號 850-8625
製造零件編號EZ9F66106
HK$36.96
單位
6 A 1 Type C EZ9 Easy 9 - - - - - - - - -
RS庫存編號 850-8634
製造零件編號EZ9F66132
HK$39.63
單位
32 A 1 Type C EZ9 Easy 9 - - - - - - - - -
RS庫存編號 850-8631
製造零件編號EZ9F66120
HK$39.63
單位
20 A 1 Type C EZ9 Easy 9 - - - - - - - - -
RS庫存編號 850-8612
製造零件編號EZ9F16140
HK$36.96
單位
40 A 1 Type B EZ9 Easy 9 - - - - - - - - -
RS庫存編號 850-8647
製造零件編號EZ9F66150
HK$36.96
單位
50 A 1 Type C EZ9 Easy 9 - - - - - - - - -
RS庫存編號 850-8600
製造零件編號EZ9F16125
HK$33.50
單位
25 A 1 Type B EZ9 Easy 9 - - - - - - - - -
RS庫存編號 850-8622
製造零件編號EZ9F66116
HK$39.63
單位
16 A 1 Type C EZ9 Easy 9 - - - - - - - - -
RS庫存編號 850-8619
製造零件編號EZ9F16132
HK$37.09
單位
32 A 1 Type B EZ9 Easy 9 - - - - - - - - -
RS庫存編號 850-8616
製造零件編號EZ9F16150
HK$36.96
單位
50 A 1 Type B EZ9 Easy 9 - - - - - - - - -
RS庫存編號 850-8606
製造零件編號EZ9F16120
HK$36.96
單位
20 A 1 Type B EZ9 Easy 9 - - - - - - - - -
RS庫存編號 850-8603
製造零件編號EZ9F16116
HK$33.50
單位
16 A 1 Type B EZ9 Easy 9 - - DIN Rail Mount 72mm - - 18mm - Thermal-Magnetic