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

35852 Products showing for Circuit Breakers

1759 of 999+
Currently unavailable
ABB, T4H MCCB 3P 320A, Fixed Mount
  • RS Stock No. 237-5956
  • Mfr. Part No. 1SDA054133R1 T4H320 FF PR221-LS 320A
Each
HK$11,320.35
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 3+N, 13A Curve K, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 203-800
  • Mfr. Part No. 2CDS383103R0447
Each
HK$4,586.13
In Stock
Better World
Schneider Electric, Power Tag, 2mA, POWERTAG, 2W, Wireless
  • RS Stock No. 248-3709
  • Mfr. Part No. A9XMC1D3
Each
HK$1,006.40
In Stock
Better World
Siemens Sentron 5SY4 MCB, 3P, 16A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1379
  • Mfr. Part No. 5SY4316-8
Each
HK$1,033.10
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-4608
  • Mfr. Part No. 1SDA072877R1
Each
HK$96,394.39
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-235
  • Mfr. Part No. 3VA6210-6KT31-2AA0
Each
HK$23,691.20
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 269-737
  • Mfr. Part No. 3VA5240-6ED41-2AA0
Each
HK$10,881.80
Temporarily out of stock
Siemens 1 Phase Surge Protector, Plug In Mount
  • RS Stock No. 213-1317
  • Mfr. Part No. 5SD7418-1
Each
HK$3,302.00
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 60A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 428-696
  • Mfr. Part No. NHJL36060U31X
Each
HK$25,638.22
Temporarily out of stock
Eaton RCBO, 13A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, Type B, FRBmM Range
  • RS Stock No. 123-705
  • Mfr. Part No. 170887 FRBMM-B13/2/003-LIA
Each
HK$1,322.56
In Stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 231-9330
  • Mfr. Part No. 1SDA100354R1 XT5N 400 EkipDip LS/I 400
Each
HK$9,643.40
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 268-563
  • Mfr. Part No. 3VA6110-0HM31-0AA0
Each
HK$15,067.10
Temporarily out of stock
Hager NEN MCB, 4P, 10A Curve B, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4698
  • Mfr. Part No. NEN410
Each
HK$2,397.74
Temporarily out of stock
Schneider Electric Straight Busbar Trunking, 1.9m, 630A, KSA Series
  • RS Stock No. 655-186
  • Mfr. Part No. KSA630ET43A
Each
HK$51,627.59
Temporarily out of stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7216
  • Mfr. Part No. 1SDA067249R1 TMD 25-300 XT2 4p
Each
HK$2,377.22
Temporarily out of stock
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC 2 Pole 250V ac Voltage Rating DIN Rail, 3A Current Rating
  • RS Stock No. 135-905
  • Mfr. Part No. 0915014
1 Pack of 3
HK$3,990.70
Temporarily out of stock
ABB RCBO, 16A Current Rating, 1P Poles, Type C
  • RS Stock No. 237-1417
  • Mfr. Part No. 2CSR275151R3164
Each
HK$1,325.52
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 80A, Fixed Mount
  • RS Stock No. 260-7511
  • Mfr. Part No. C10W4TM080
Each
HK$15,661.07
Temporarily out of stock
Better World
Schneider Electric Busbar Feed Unit, Canalis KS Series
  • RS Stock No. 211-0477
  • Mfr. Part No. KSA630AE4
Each
HK$8,389.50
Temporarily out of stock
Lovato P1 MCB, 1+N, 25A Curve C, 230V AC
  • RS Stock No. 248-5618
  • Mfr. Part No. P1MB1MC25
Each
HK$444.30
1
1759
1793
Results per page

Related links