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

1725 of 999+
Temporarily out of stock
Better World
Siemens, 0AA0 MCCB 4P 40A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-6066
  • Mfr. Part No. 3VA2140-6KP42-0AA0
Each
HK$17,266.90
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - 219 3 Pole 480V ac Voltage Rating Panel Mount, 30A Current Rating
  • RS Stock No. 275-0071
  • Mfr. Part No. 219-3-1-66-5-8-30
Each
HK$2,126.20
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 260-655
  • Mfr. Part No. 3VA6325-8KM41-0AA0
Each
HK$42,180.70
In Stock
Better World
Siemens SENTRON 5SY5 MCB, 2P, 40A Curve C, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 209-6012
  • Mfr. Part No. 5SY5240-7
Each
HK$1,890.60
In Stock
ABB RCBO, 32A Current Rating, 2P Poles, 300mA Trip Sensitivity, Type C, System Pro M Compact Range
  • RS Stock No. 201-6975
  • Mfr. Part No. 2CSR255080R3324 DS201 C32 AC300
Each
HK$994.20
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 4P, 6A Curve K
  • RS Stock No. 225-6005
  • Mfr. Part No. 2CDS254001R0377 S204 K 6A - 10 KA
Each
HK$1,474.69
Temporarily out of stock
Eaton IZMX16 Electronic Circuit Breaker 630A , DIN Rail
  • RS Stock No. 127-485
  • Mfr. Part No. 183346 IZMX16N3-V06W-1
Each
HK$41,103.94
Temporarily out of stock
Schneider Electric A9V RCD, 63A, 4 Pole, 30mA, Type A-SI, 400-415V ac
  • RS Stock No. 211-964
  • Mfr. Part No. A9V61463
Each
HK$4,502.30
Temporarily out of stock
ABB AC Switch Disconnectors Accessories Detachable Neutral Clamp for use with Low-Voltage Switch Technology
  • RS Stock No. 259-9706
  • Mfr. Part No. 1SCA104162R1001
Each
HK$3,141.39
Temporarily out of stock
Siemens SENTRON Door Feedthrough Accessory for use with 3VF7, 3VF8, Operating Shafts 12 x 12 mm
  • RS Stock No. 266-484
  • Mfr. Part No. 8UC7424-3BB44
Each
HK$2,879.50
Temporarily out of stock
Phoenix Contact Surge Protector, 40A, 1100V dc, Wall Mount Mount
  • RS Stock No. 509-658
  • Mfr. Part No. 1029990
Each
HK$5,762.30
Temporarily out of stock
Schneider Electric RCBO, 45A Current Rating, 1P Poles, Type C, Acti9 Range
  • RS Stock No. 207-397
  • Mfr. Part No. A9D06845
Each
HK$1,991.70
Temporarily out of stock
Eaton IZMX/INX Withdrawable Unit for use with INX40…4-…W, IZMX40…4-…W
  • RS Stock No. 132-951
  • Mfr. Part No. 183962 IZMX-CAS404-2500-SEC-1
Each
HK$48,087.80
Temporarily out of stock
ABB Tmax XT Trip Unit for use with XT4
  • RS Stock No. 236-7308
  • Mfr. Part No. 1SDA067481R1 TMA 125-1250 XT4 4p
Each
HK$5,156.70
Temporarily out of stock
Better World
Schneider Electric Vigi RCD, 63A, 4 Pole, 300mA
  • RS Stock No. 806-7219
  • Mfr. Part No. A9V06763
Each
HK$1,926.00
Temporarily out of stock
Eaton xEffect FAZ MCB, 3+N, 50A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 231-861
  • Mfr. Part No. 115380 FAZ-D50/3N
Each
HK$2,594.90
In Stock
Eaton xEffect MCB, 3P, 1.5A Curve B
  • RS Stock No. 230-0865
  • Mfr. Part No. 177578 FAZ6-B1,5/3
Each
HK$940.24
Temporarily out of stock
Better World
Siemens SENTRON 5SL4 MCB, 1+N, 4A Curve B, 230V AC, 72V DC
  • RS Stock No. 210-3378
  • Mfr. Part No. 5SL4504-6
Each
HK$535.60
Temporarily out of stock
ABB IEC Range Busbar for use with S200C
  • RS Stock No. 250-4791
  • Mfr. Part No. 2CDL804142R1110
1 Box of 10
HK$20,989.78
In Stock
Legrand DX3 Circuit Breaker, 4P, 50A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 266-1335
  • Mfr. Part No. 408122
Each
HK$5,087.28
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