Electronic Circuit Breakers

Electronic circuit breakers are automatically operated electrical switches that are designed to protect an electrical circuit from damage. They cut off a circuit whenever the current jumps above a safe level.

How electronic circuit breakers work

Electronic circuit breakers prevent an overload or short circuit. Their basic function is to keep an electrical system running safely by interrupting the flow of current when a fault is detected. They do this by a combination of active electronic current limitation in the case of a short circuit and an overload deactivation.

Why electronic circuit breakers are important

In homes, there's usually a main electronic circuit breaker that protects the whole system, plus smaller circuit breakers built into many domestic appliances such as washing machines, tumble dryers and air-conditioning systems.

Without circuit breakers (or the alternative, fuses), household electricity would be impractical because of the potential for fires and other issues resulting from simple wiring problems and equipment failures. Compared to fuses, which only work once and then require replacment, circuit breakers can be used over and over again.


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Description Price Range Series Number of Channels Current Rating Breaking Capacity at Maximum Voltage Rating Rated DC Voltage Mounting Style Length Width Depth
RS Stock No. 890-3796
Mfr. Part No.2905743
HK$2,076.51
Each
units
- - - - - - DIN Rail 130mm 41mm 121mm
RS Stock No. 210-2149
Mfr. Part No.ESX10-TC-124-DC12V-1A-E
BrandETA
HK$711.96
Each
units
- ESX10-T 1 1A - 12V - - - -
RS Stock No. 179-3007
Mfr. Part No.2495380000
HK$1,628.87
1 Box of 30
Box(es)
- maxGUARD - - - - - 8mm 96.5mm 125mm
RS Stock No. 210-2150
Mfr. Part No.ESX10-TC-124-DC12V-3A-E
BrandETA
HK$711.96
Each
units
- ESX10-T 1 3A - 12V - - - -
RS Stock No. 210-2116
Mfr. Part No.ESX10-100-DC24V-16A-E
BrandETA
HK$711.96
Each
units
- ESX10 1 16A - 24V - - - -
New
RS Stock No. 229-9343
Mfr. Part No.088916
BrandEaton
HK$1,010.69
Each
units
- PKZM0 - 10A - - - - - -
RS Stock No. 210-2151
Mfr. Part No.ESX10-TC-124-DC12V-6A-E
BrandETA
HK$711.96
Each
units
- ESX10-T 1 6A - 12V - - - -
RS Stock No. 212-8802
Mfr. Part No.2800911
HK$519.87
Each
units
Electronic Device Circuit Breaker CB 1 4A - 24V - - - -
RS Stock No. 212-8803
Mfr. Part No.2800912
HK$507.01
Each
units
Electronic Device Circuit Breaker CB 1 6A - 24V - - - -
RS Stock No. 914-4607
Mfr. Part No.2CDE601101R2003 EPD24-TB-101-3A
BrandABB
HK$1,546.67
Each
units
- - - - - - - - - -
RS Stock No. 179-2990
Mfr. Part No.2081900000
HK$230.71
Each
units
- maxGUARD - 225mA - 24V DIN Rail Mount 12.2mm 96.5mm 125mm
RS Stock No. 215-4166
Mfr. Part No.S8V-CP0424S
BrandOmron
HK$2,035.72
Each
units
- S8V-C - 10A - 24V - - - -
RS Stock No. 210-2117
Mfr. Part No.ESX10-103-DC24V-10A-E
BrandETA
HK$1,016.96
Each
units
- ESX10 1 10A - 24V - - - -
New
RS Stock No. 218-8919
Mfr. Part No.1694-PM222-CL2
HK$570.975
Each (In a Pack of 4)
units
1694 Electronic Circuit Protectors 1694-PM 2 2A - 24V - - - -
New
RS Stock No. 229-9344
Mfr. Part No.088917
BrandEaton
HK$1,010.69
Each
units
- PKZM0 - 16A - - - - - -
New
RS Stock No. 207-2676
Mfr. Part No.1065727
HK$1,139.43
Each
units
Electronic Device Circuit Breaker CBMC 1 4A - 24V - - - -
RS Stock No. 177-6028
Mfr. Part No.787-2861/400-000
BrandWago
HK$558.48
Each
units
EPSITRON 787-2861 1 4A 15 A 30V DIN Rail Mount 94mm 6mm 97.8mm
RS Stock No. 914-4626
Mfr. Part No.2CDE601101R2012 EPD24-TB-101-12A
BrandABB
HK$1,934.91
Each
units
- - - - - - - - - -
RS Stock No. 210-2121
Mfr. Part No.ESX10-TA-100-DC24V-10A-E
BrandETA
HK$966.05
Each
units
- ESX10-T 1 10A - 24V - - - -
RS Stock No. 201-3968
Mfr. Part No.2909906
HK$306.52
Each
units
- - - - - - - - - -