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

48 of 999+
Temporarily out of stock
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC Single Pole 250V ac Voltage Rating DIN Rail, 500mA Current
  • RS Stock No. 135-482
  • Mfr. Part No. 0914581
1 Pack of 6
HK$3,931.50
Temporarily out of stock
ABB System Pro M Compact S200 MCB, 3P, 500mA Curve C, 400V AC, 110V DC, 10 kA Breaking Capacity
  • RS Stock No. 203-724
  • Mfr. Part No. 2CDS253001R0984
Each
HK$2,081.74
Temporarily out of stock
ABB S801S MCB, 1P, 50A, UC-K, 250V DC, 50 kA Breaking Capacity
  • RS Stock No. 140-627
  • Mfr. Part No. 2CCS861001R1577
Each
HK$3,371.38
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 125A, Breaking Capacity 15 kA, Fixed Mount
  • RS Stock No. 341-214
  • Mfr. Part No. C25H6TM125
Each
HK$27,592.76
Temporarily out of stock
Better World
Siemens SENTRON 5SL4 MCB, 1P, 63A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 209-6464
  • Mfr. Part No. 5SL4163-8
Each
HK$691.20
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 3P, 50A Curve K, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 201-204
  • Mfr. Part No. 2CDS273001R0577
Each
HK$4,183.28
Temporarily out of stock
ABB PBFC 3, 3+N Phase Busbar
  • RS Stock No. 201-488
  • Mfr. Part No. 1STQ007408A0000
Each
HK$8,952.38
Temporarily out of stock
Hager Hager MMN Circuit Breaker, 2P, 6.3A, Type AC, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 599-787
  • Mfr. Part No. MMN206
Each
HK$2,863.20
Temporarily out of stock
Schneider Electric Busbar Tap-Off Unit, 680mm, 630A, Canalis Series
  • RS Stock No. 354-466
  • Mfr. Part No. KH063SD9502
Each
HK$87,313.00
Temporarily out of stock
Schneider Electric Acti9 iID RCCB, 25A, 2 Pole, 300mA, Type A-SI, 220 → 240V ac
  • RS Stock No. 654-800
  • Mfr. Part No. A9R61225
Each
HK$2,692.67
Temporarily out of stock
Schneider Electric ComPact Auxiliary Contact for use with NS630b to NS3200
  • RS Stock No. 275-6652
  • Mfr. Part No. 33012
Each
HK$532.82
Temporarily out of stock
Schneider Electric Acti9 Acti9 iC60 MCB, 2P, 25A, Type AC, 500V AC, 300 mA Breaking Capacity
  • RS Stock No. 347-124
  • Mfr. Part No. A9Q04225
Each
HK$3,473.07
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 3 channels Type N
  • RS Stock No. 157-372
  • Mfr. Part No. 3VA2225-8HL32-0AA0
Each
HK$16,784.10
Temporarily out of stock
Phoenix Contact Surge Protector, 20kA, DIN Rail Mount
  • RS Stock No. 207-2728
  • Mfr. Part No. 2906769
Each
HK$1,093.30
In Stock
Schneider Electric, ComPacT NSX Circuit breaker 1P 63A, Breaking Capacity 25 kA, Busbar System
  • RS Stock No. 654-210
  • Mfr. Part No. IL0631P253
Each
HK$1,612.07
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 268-566
  • Mfr. Part No. 3VA6110-5HL41-0AA0
Each
HK$9,207.70
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 1kA, Breaking Capacity 31 kA, Fixed Mount
  • RS Stock No. 428-721
  • Mfr. Part No. C100H320FM
Each
HK$97,299.83
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 125A, Fixed Mount
  • RS Stock No. 260-7674
  • Mfr. Part No. C12B3TM125L
Each
HK$5,419.32
In Stock
RS PRO RC Suppressor Circuit for use with Contactors
  • RS Stock No. 277-8526
Each
HK$83.02
Temporarily out of stock
ABB S800PV MCB, 4P, 50A Curve B, 1500V DC, 5 kA Breaking Capacity
  • RS Stock No. 225-5948
  • Mfr. Part No. 2CCF019629R0001 S804PV-SP50 - 5 kA
Each
HK$4,999.55
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