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. 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. 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. 201-6326
Mfr. Part No.2909902
HK$253.10
Each
units
- - - - - - - - - -
RS Stock No. 729-2903
Mfr. Part No.ESX10-TB-114-DC24V-3A
BrandETA
HK$776.18
Each
units
- ESX10-T - 3A - - - - - -
RS Stock No. 768-1104
Mfr. Part No.2800917
HK$458.40
Each
units
TRABTECH CB E1 24DC/3A NC P - 3A - - - - 12.3mm -
RS Stock No. 179-2991
Mfr. Part No.2081890000
HK$210.01
Each
units
- maxGUARD - 30mA - 24V DIN Rail Mount 12.2mm 96.5mm 125mm
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 - - - -
New
RS Stock No. 210-2147
Mfr. Part No.ESX10-TB-124-DC24V-6A-E
BrandETA
HK$835.36
Each
units
- ESX10-T 1 6A - 24V - - - -
RS Stock No. 179-2997
Mfr. Part No.2080490000
HK$211.13
Each
units
- maxGUARD 1 25mA - 24V DIN Rail Mount 6.1mm 96.5mm 125mm
New
RS Stock No. 210-2124
Mfr. Part No.ESX10-TA-100-DC24V-2A-E
BrandETA
HK$746.64
Each
units
- ESX10-T 1 2A - 24V - - - -
RS Stock No. 914-4607
Mfr. Part No.2CDE601101R2003
BrandABB
HK$1,487.66
Each
units
- - - - - - - - - -
New
RS Stock No. 212-8805
Mfr. Part No.2800919
HK$341.03
Each
units
Electronic Device Circuit Breaker CB 1 6A - 24V - - - -
RS Stock No. 201-5597
Mfr. Part No.2910411
HK$1,524.34
Each
units
- - - - - - - - - -
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. 210-2128
Mfr. Part No.ESX10-TA-100-DC24V-8A-E
BrandETA
HK$746.64
Each
units
- ESX10-T 1 8A - 24V - - - -
New
RS Stock No. 210-2146
Mfr. Part No.ESX10-TB-124-DC24V-3A-E
BrandETA
HK$835.36
Each
units
- ESX10-T 1 3A - 24V - - - -
New
RS Stock No. 212-8804
Mfr. Part No.2800915
HK$341.03
Each
units
Electronic Device Circuit Breaker CB 1 1A - 24V - - - -
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
New
RS Stock No. 212-8801
Mfr. Part No.2800910
HK$295.84
Each
units
Electronic Device Circuit Breaker CB 1 3A - 24V - - - -
RS Stock No. 177-6028
Mfr. Part No.787-2861/400-000
BrandWago
HK$509.33
Each
units
EPSITRON 787-2861 1 4A 15 A 30V DIN Rail Mount 94mm 6mm 97.8mm