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

35456 Products showing for Circuit Breakers

1753 of 999+
Eaton IZMX/INX Electronic Circuit Breaker 2.5kA IZMX/INX Circuit-Breaker, 3 channels , Withdrawable
  • RS Stock No. 132-692
  • Mfr. Part No. 183731 IZMX40B3-V25W-1
Each
HK$148,497.48
Siemens 210 → 240V ac Shunt Trip Shunt trip for use with 3RV2 Series Circuit Breakers
  • RS Stock No. 706-1976
  • Mfr. Part No. 3RV2902-2DP0
Each
HK$708.30
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0289
  • Mfr. Part No. 8GK1061-4KK40
Each
HK$13,302.80
Eaton, Eaton Moeller Series NZM MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 4 kA, Fixed Mount
  • RS Stock No. 231-228
  • Mfr. Part No. 109691 NZMC3-4-A400/250
Each
HK$22,284.48
Eaton IZMX/INX Electronic Circuit Breaker 1.6kA , DIN Rail
  • RS Stock No. 127-516
  • Mfr. Part No. 183397 IZMX16H4-V16W-1
Each
HK$115,576.28
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 260-317
  • Mfr. Part No. 3VA6325-6HL31-2AA0
Each
HK$23,186.60
Eaton xEffect MCB, 1P, 16A Curve C, 240 → 415V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-6905
  • Mfr. Part No. 102090 FAZ-C16/1-NA
Each
HK$346.20
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 125A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 230-373
  • Mfr. Part No. 113264 NZMN2-4-A125-SVE
Each
HK$12,574.55
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 40A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-618
  • Mfr. Part No. 3VA5140-4ED21-0AA0
Each
HK$2,047.50
Siemens SENTRON Nut Keeper Kit for use with 3VA5
  • RS Stock No. 269-7207
  • Mfr. Part No. 3VA9474-0QA00
Each (In a Pack of 4)
HK$214.375
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX250
  • RS Stock No. 260-7837
  • Mfr. Part No. C253TM200
Each
HK$9,046.10
Better World
Schneider Electric ComPact NSX, Easy Pact CVS Cover for use with ComPact NSX, Easy Pact CVS
  • RS Stock No. 219-9359
  • Mfr. Part No. LV429516
Each
HK$273.40
Siemens Alpha Blanking Strip
  • RS Stock No. 209-7096
  • Mfr. Part No. 8GK9910-0KK01
Each
HK$301.50
Schneider Electric, PowerPact Circuit breaker 2P 35A, Breaking Capacity 35 kA, DIN Rail Mount
  • RS Stock No. 357-470
  • Mfr. Part No. BGL26035LU
Each
HK$6,372.37
ABB S301 MCB, 1P, 32A Curve B, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 200-274
  • Mfr. Part No. 2CDS381001R0325
Each
HK$1,027.60
Better World
Schneider Electric Acti 9 Acti9 iDT40T MCB, 3P, 25A Curve C, 400V AC
  • RS Stock No. 239-9971
  • Mfr. Part No. A9P22325
Each
HK$963.90
Schneider Electric, ComPacT NSX MCCB 3P 160A, Fixed Mount
  • RS Stock No. 254-6343
  • Mfr. Part No. C16F34V160
Each
HK$22,950.44
Legrand Protective Cap
  • RS Stock No. 266-3049
  • Mfr. Part No. 0 016 91
1 Box of 5
HK$603.66
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 3 channels
  • RS Stock No. 259-4138
  • Mfr. Part No. 1SDA072251R1
Each
HK$53,588.74
Legrand DX3 RCD, 10A, 1+N Pole, 30mA, Type AC
  • RS Stock No. 731-9938
  • Mfr. Part No. 4 111 57
Each
HK$3,703.63
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