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

1752 of 999+
In Stock
Schneider Electric, ComPacT NSX MCCB 3P 50A, Fixed Mount
  • RS Stock No. 254-6271
  • Mfr. Part No. C103MA050
Each
HK$1,817.60
Temporarily out of stock
Phoenix Contact Surge Protector, 10kA, DIN Rail Mount
  • RS Stock No. 201-6288
  • Mfr. Part No. 2906767
Each
HK$987.80
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 500A 3VA, 4 channels
  • RS Stock No. 155-871
  • Mfr. Part No. 3VA2450-7JP42-0AA0
Each
HK$42,987.90
Temporarily out of stock
Phoenix Contact 1 Phase Surge Protector, 40kA, DIN Rail Mount
  • RS Stock No. 207-2701
  • Mfr. Part No. 2905341
Each
HK$2,356.10
Temporarily out of stock
ABB SMISSLINE TP MCB, 2P, 50A Curve C, 415V AC
  • RS Stock No. 246-2591
  • Mfr. Part No. 2CCS572001R0504
Each
HK$1,378.38
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 3+N, 8A Curve C, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 200-955
  • Mfr. Part No. 2CDS383103R0084
Each
HK$5,432.95
Temporarily out of stock
Miniature circuit breaker, 4 A, 1p
  • RS Stock No. 611-265
  • Mfr. Part No. PLSM-C4-Q-MW
Each
HK$353.90
Temporarily out of stock
ZX422 Copper Bar 60x10x2000mm
  • RS Stock No. 237-6603
  • Mfr. Part No. 2CPX061422R9999
1 Box of 1
HK$7,011.01
Temporarily out of stock
ABB Copper Copper Bar for Use with TriLine
  • RS Stock No. 237-6596
  • Mfr. Part No. 2CPX061359R9999
1 Box of 1
HK$13,220.96
Temporarily out of stock
Better World
Siemens 5SV3 RCCB, 40A, 4 Pole, 300mA, Type F, 400V ac
  • RS Stock No. 211-9698
  • Mfr. Part No. 5SV3644-7
Each
HK$1,787.50
Temporarily out of stock
Eaton xEffect MCB, 3+N, 2.5A Curve D
  • RS Stock No. 230-1020
  • Mfr. Part No. 177474 FAZ6-D2,5/3N
Each
HK$1,417.79
Temporarily out of stock
BB-EV 2 Phase Busbar, 690V, 27mm Pitch
  • RS Stock No. 247-374
  • Mfr. Part No. 168858 BB-EVP-10/N-1,5MU
Each
HK$385.30
Temporarily out of stock
ABB System Pro M Compact SU200 MR Circuit Breaker, 1P, 63A Curve K, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 204-335
  • Mfr. Part No. 2CDS271347R0607
Each
HK$2,054.63
Temporarily out of stock
ABB S800U MCB, 1P, 30A, Type Z, 240V AC, 30 kA Breaking Capacity
  • RS Stock No. 140-438
  • Mfr. Part No. 2CCS881017R0305
Each
HK$2,143.30
Temporarily out of stock
Siemens SENTRON 5SJ MCB, 1P, 15A
  • RS Stock No. 232-2236
  • Mfr. Part No. 5SJ4118-8HG40
Each
HK$418.30
In Stock
Eaton xEffect MCB, 2P, 40A Curve C
  • RS Stock No. 230-0979
  • Mfr. Part No. 239107 FAZ6-C40/2
Each
HK$544.60
Temporarily out of stock
ABB System Pro M Compact SU200 MR Circuit Breaker, 1P, 32A Curve K, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 200-145
  • Mfr. Part No. 2CDS271347R0537
Each
HK$1,317.32
Temporarily out of stock
Schneider Electric, PowerPact MCCB 2P 15A, Breaking Capacity 65 kA, Clip-On
  • RS Stock No. 346-805
  • Mfr. Part No. BJF26015
Each
HK$8,005.30
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 2P, 8A Curve B, 415V AC, 125V DC, 25 kA Breaking Capacity
  • RS Stock No. 200-744
  • Mfr. Part No. 2CDS382001R0085
Each
HK$2,055.20
Temporarily out of stock
Eaton NZM Jumper Link for use with N2-4-…-S1(-S15)-DC
  • RS Stock No. 121-180
  • Mfr. Part No. 170118 NZM2-4-XKVI2POU
Each
HK$1,332.07
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