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

97 of 999+
Schneider Electric Acti9 Busbar, 415V ac, 19mm Pitch
  • RS Stock No. 653-965
  • Mfr. Part No. A9XPH306
Each
HK$371.57
Altech Thermal Circuit Breaker - V-EA 2 Pole 277V Voltage Rating DIN Rail Mount, 10A Current Rating
  • RS Stock No. 899-1856
  • Mfr. Part No. 2G10UM
Each
HK$295.90
SENTRON Wire Connector for use with 3VA55, 3VA65/66 Series
  • RS Stock No. 263-617
  • Mfr. Part No. 3VA9673-0JJ44
1 Kit
HK$3,117.60
ABB MCCB Molded Case Circuit Breaker 3P 400A, Fixed Mount
  • RS Stock No. 250-4237
  • Mfr. Part No. 1SDA054537R1
Each
HK$39,236.09
Sensata Airpax Airpax Thermal Circuit Breaker - M39019 Single Pole Panel Mount, 15A Current Rating
  • RS Stock No. 275-0415
  • Mfr. Part No. M39019/01-255S
Each
HK$7,797.30
Better World
ABB, Tmax XT MCCB 4P 100A, Fixed Mount
  • RS Stock No. 236-6691
  • Mfr. Part No. 1SDA068321R1 XT4S 160 TMA 100A FF
Each
HK$7,200.30
Eaton xEffect MCB, 4P, 32A Curve C, 240 → 415V AC, 96V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-7156
  • Mfr. Part No. 279064 FAZ-C32/4
Each
HK$1,646.92
Eaton xEffect MCB, 4P, 3A Curve B
  • RS Stock No. 230-0907
  • Mfr. Part No. 177425 FAZ6-B3/4
Each
HK$941.57
Siemens 8WH9130 Terminal for use with Mounting Plates
  • RS Stock No. 230-2199
  • Mfr. Part No. 8WH9130-0NA00
Each (In a Pack of 10)
HK$90.77
Better World
Schneider Electric Acti 9 C120N MCB, 3P, 125A Curve D, 440V AC, 375V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3095
  • Mfr. Part No. A9N18389
Each
HK$8,648.28
ABB S803S RCCB, 63A, 3 Pole, 690V
  • RS Stock No. 140-866
  • Mfr. Part No. 2CCS803901R0599
Each
HK$15,804.18
Schneider Electric Acti9 A9F76 MCB, 4P, 32A, 440V AC, 250V DC, 6000 A Breaking Capacity
  • RS Stock No. 276-8724
  • Mfr. Part No. A9F76432
Each
HK$2,158.21
Schneider Electric Multi9 M9F1 MCB, 2P, 16A Curve D, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 212-129
  • Mfr. Part No. M9F12216
Each
HK$853.48
Schneider Electric MasterPacT Locking Kit for use with MasterPact NW
  • RS Stock No. 341-050
  • Mfr. Part No. 64928
Each
HK$3,549.33
Schneider Electric, ComPacT MCCB 3P 125A, Fixed Mount
  • RS Stock No. 260-7680
  • Mfr. Part No. C12E3TM125L
Each
HK$4,883.65
Phoenix Contact 3 Phase Surge Protector, 2kV, DIN Rail Mount
  • RS Stock No. 890-3720
  • Mfr. Part No. 2905469
Each
HK$9,575.20
Schneider Electric Acti9 iC60H MCB, 3P, 1A Curve B, 415V AC, 133V DC, 70 kA Breaking Capacity
  • RS Stock No. 654-739
  • Mfr. Part No. A9F53301
Each
HK$2,053.30
Siemens, SENTRON MCCB 4P 110A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-939
  • Mfr. Part No. 3VA5211-7ED41-2AA0
Each
HK$19,065.40
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 3 kA
  • RS Stock No. 245-659
  • Mfr. Part No. 3VA6225-5KT41-0AA0
Each
HK$34,842.00
Siemens, SENTRON MCCB 4P 175A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 148-009
  • Mfr. Part No. 3VA5217-5GC41-0AA0
Each
HK$15,024.40
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