Circuit Breakers

Having an effective and well-designed circuit protection system in every building is vital. It not only protects machinery and equipment from costly damage or even worse an electrical fire, but good circuit protection also ensures people are safe too.

Here, at RS we stock an extensive range of high-quality products within our circuit breaker range. They include various types of protection devices as well as consumer units, distribution boards and accessories. Whether you are designing and building a new system or maintaining an old one we have everything you need, providing the perfect end-to-end solution.

What are the different types of circuit breakers?

RCBO Breakers

RCBO stands for Residual Current Circuit Breaker with Over Current protection. Installed in consumer units they protect from short circuits, overload current and residual current as they combine all the functions of an MCB and an RCCB.

RCCB Breakers

RCCB stands for Residual Current Circuit Breaker. They are designed to quickly disconnect any circuit as soon as current leaks to the earthing wire. RCCBs are also effective in protecting from electrocution or shock from direct contact.

MCB Breakers

MCB stands for Miniature Circuit Breaker. They are designed to protect an electric circuit from overcurrent only. They do not safeguard people from electric shock caused by earth leakage.

MCCB Breakers

MCCB stands for Moulded Case Circuit Breaker. They are another type of electrical protection device used in higher current rating applications where an MCB would not suffice. An MCCB protects against overload and short circuit faults. With its high breaking capacity and a wider range of current ratings, MCCBs are typically found in industrial systems rather than domestic systems.

Busbar Feed & Tap-Off Units
Busbar Feed & Tap-Off Units
Busbar Trunking
Busbar Trunking
Busbar Trunking Accessories
Busbar Trunking Accessories
Busbars
Busbars
Circuit Breaker Accessories
Circuit Breaker Accessories
Circuit Trips
Circuit Trips
Consumer Units
Consumer Units
Distribution Boards
Distribution Boards
Electronic Circuit Breakers
Electronic Circuit Breakers
Energy Monitoring Devices
Energy Monitoring Devices
MCBs
MCBs
MCCBs
MCCBs
RCBOs
RCBOs
RCCBs
RCCBs
Surge Protection Devices
Surge Protection Devices
Thermal Breakers
Thermal Breakers

35863 Products showing for Circuit Breakers

40 of 999+
In Stock
TE Connectivity Thermal Magnetic Circuit Breakers - Potter & Brumfield W54 Single Pole 250V ac Voltage Rating Panel
  • RS Stock No. 240-8955
  • Mfr. Part No. 3-1393250-2
Each
HK$54.70
In Stock
Better World
Schneider Electric iC60 RCD, 25A, 2 Pole, 30mA, Type AC, 230 → 240V ac
  • RS Stock No. 734-9071
  • Mfr. Part No. A9Q11225
Each
HK$2,090.50
In Stock
Better World
Siemens RCBO, 25A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type AC, Sentron Range
  • RS Stock No. 196-3616
  • Mfr. Part No. 5SV43120KL
Each
HK$818.90
In Stock
ETA Thermal Circuit Breaker - 3600 Single Pole 250V Voltage Rating Panel Mount, 10A Current Rating
  • RS Stock No. 729-2855
  • Mfr. Part No. 3600-P10-Si-10A
Each
HK$879.40
Temporarily out of stock
Better World
Siemens SENTRON 5SL4 MCB, 1P, 6A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 209-6451
  • Mfr. Part No. 5SL4106-8
Each
HK$337.40
In Stock
Eaton xEffect MCB, 2P, 63A Curve C, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 769-4728
  • Mfr. Part No. 239109 FAZ6-C63/2
Each
HK$598.10
In Stock
Better World
ABB System Pro M Compact S200M MCB, 1P, 500mA Curve C, 253V AC, 72V DC, 25 kA Breaking Capacity
  • RS Stock No. 231-9698
  • Mfr. Part No. 2CDS271001R0984 S201M C 0.5A - 15 KA
1 Box of 1
HK$199.50
In Stock
RS PRO Residential RCCBs, 63A, 4 Pole, 30mA, Type A, 400V
  • RS Stock No. 284-2375
Each
HK$1,025.94
Temporarily out of stock
Siemens SENTRON 5SJ4 MCB, 2P, 16A Curve C, 400V AC, 60V DC, 14 kA Breaking Capacity
  • RS Stock No. 212-8818
  • Mfr. Part No. 5SJ4216-7HG41
Each
HK$1,169.60
Temporarily out of stock
ABB Mounting Plate for use with Three-Pole XT1
  • RS Stock No. 192-0808
  • Mfr. Part No. 1SDA066652R1
Each
HK$733.74
In Stock
Europa EUC1P EUB MCB, 1P, 20A Curve B, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6471
  • Mfr. Part No. EUC1P20B
Each
HK$62.00
In Stock
Europa EUC2P EUC MCB, 2P, 1A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6538
  • Mfr. Part No. EUC2P1C
Each
HK$226.50
In Stock
Eaton xPole MCB, 1+N, 6A Curve C, 230V AC, 4.5 kA Breaking Capacity
  • RS Stock No. 230-1084
  • Mfr. Part No. 264743 PLG4-C6/1N
Each
HK$134.80
Temporarily out of stock
Better World
Schneider Electric Acti 9 C60-PV MCB, 2P, 25A Curve B, 800V DC, 3 kA Breaking Capacity
  • RS Stock No. 776-3626
  • Mfr. Part No. A9N61660
Each
HK$2,939.00
In Stock
ABB RCBO, 32A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, System Pro M Compact Range
  • RS Stock No. 914-4070
  • Mfr. Part No. 2CSR255051R1325 DSE201 B32 AC30 - N Blue
Each
HK$395.00
Temporarily out of stock
Phoenix Contact Surge Protector, DIN Rail Mount
  • RS Stock No. 207-2745
  • Mfr. Part No. 2906832
Each
HK$164.00
In Stock
ETA Thermal Circuit Breaker - 3600 Single Pole 250V Voltage Rating Panel Mount, 4A Current Rating
  • RS Stock No. 729-2849
  • Mfr. Part No. 3600-P10-Si-4A
Each
HK$796.50
In Stock
RS PRO MCB, 2P, 16A Curve B, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0160
Each
HK$188.70
Temporarily out of stock
ABB RCBO, 16A Current Rating, 4P Poles, Type B
  • RS Stock No. 237-5209
  • Mfr. Part No. 2CSR274101R1165
Each
HK$3,453.99
In Stock
Better World
Siemens Sentron 5SY4 MCB, 4P, 6A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 124-3192
  • Mfr. Part No. 5SY4406-8
Each
HK$1,698.30
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