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
New
RS Stock No. 210-2122
Mfr. Part No.ESX10-TA-100-DC24V-12A-E
BrandETA
HK$874.32
Each
units
- ESX10-T 1 12A - 24V - - - -
RS Stock No. 179-2989
Mfr. Part No.2081880000
HK$188.66
Each
units
- maxGUARD - 120mA - 24V DIN Rail Mount 12.2mm 96.5mm 125mm
RS Stock No. 914-4604
Mfr. Part No.2CDE601101R2002
BrandABB
HK$1,512.12
Each
units
- - - - - - - - - -
RS Stock No. 179-3003
Mfr. Part No.2122930000
HK$171.89
1 Box of 10
Box(es)
- maxGUARD - - - - DIN Rail Mount 6.1mm 96.5mm 125mm
RS Stock No. 177-6029
Mfr. Part No.787-2861/600-000
BrandWago
HK$509.33
Each
units
EPSITRON 787-2861 1 6A 15 A 30V DIN Rail Mount 94mm 6mm 97.8mm
RS Stock No. 179-2994
Mfr. Part No.2080420000
HK$210.01
Each
units
- maxGUARD 1 25mA - 24V DIN Rail Mount 6.1mm 96.5mm 125mm
RS Stock No. 914-4607
Mfr. Part No.2CDE601101R2003
BrandABB
HK$1,487.66
Each
units
- - - - - - - - - -
New
RS Stock No. 210-2144
Mfr. Part No.ESX10-TB-114-DC24V-4A-E
BrandETA
HK$835.36
Each
units
- ESX10-T 1 4A - 24V - - - -
RS Stock No. 177-6030
Mfr. Part No.787-2861/800-000
BrandWago
HK$509.33
Each
units
EPSITRON 787-2861 1 8A 15 A 30V DIN Rail Mount 94mm 6mm 97.8mm
New
RS Stock No. 210-2132
Mfr. Part No.ESX10-TB-101-DC24V-2A-E
BrandETA
HK$835.36
Each
units
- ESX10-T 1 2A - 24V - - - -
RS Stock No. 179-2995
Mfr. Part No.2080480000
HK$220.02
Each
units
- maxGUARD 1 25mA - 24V DIN Rail Mount 6.1mm 96.5mm 125mm
RS Stock No. 890-3806
Mfr. Part No.2905744
HK$2,869.27
Each
units
- CBM E8 24DC/0.5-10A NO-R - - - - DIN Rail 130mm 41mm 121mm
RS Stock No. 179-3001
Mfr. Part No.2122910000
HK$190.60
1 Box of 10
Box(es)
- maxGUARD - - - - DIN Rail Mount 6.1mm 96.5mm 125mm
RS Stock No. 914-4613
Mfr. Part No.2CDE601101R2008
BrandABB
HK$1,387.81
Each
units
- - - - - - - - - -
New
RS Stock No. 210-2149
Mfr. Part No.ESX10-TC-124-DC12V-1A-E
BrandETA
HK$890.02
Each
units
- ESX10-T 1 1A - 12V - - - -
New
RS Stock No. 210-2125
Mfr. Part No.ESX10-TA-100-DC24V-3A-E
BrandETA
HK$746.64
Each
units
- ESX10-T 1 3A - 24V - - - -
RS Stock No. 768-1101
Mfr. Part No.2800916
HK$354.93
Each
units
TRABTECH CB E1 24DC/2A P - 2A - - - - 12.3mm -
New
RS Stock No. 210-2133
Mfr. Part No.ESX10-TB-101-DC24V-3A-E
BrandETA
HK$835.36
Each
units
- ESX10-T 1 3A - 24V - - - -
New
RS Stock No. 212-8802
Mfr. Part No.2800911
HK$295.84
Each
units
Electronic Device Circuit Breaker CB 1 4A - 24V - - - -
New
RS Stock No. 212-8809
Mfr. Part No.2800928
HK$334.39
Each
units
Electronic Device Circuit Breaker CB 1 10A - 24V - - - -