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

1737 of 999+
Temporarily out of stock
ABB Tmax Adapter for use with Tmax T
  • RS Stock No. 237-5989
  • Mfr. Part No. 1SDA055173R1 T4-6
Each
HK$163.47
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 40A 3VA2, 4 channels
  • RS Stock No. 157-416
  • Mfr. Part No. 3VA2140-8JP46-0AA0
Each
HK$19,687.00
Temporarily out of stock
ABB PBSC 3, 3+N Phase Busbar
  • RS Stock No. 202-504
  • Mfr. Part No. 1STQ007423A0000
Each
HK$13,925.67
Temporarily out of stock
ETA Thermal Circuit Breaker - 1110 Single Pole 250V Voltage Rating Panel Mount, 500mA Current Rating
  • RS Stock No. 416-944
  • Mfr. Part No. 1110-F112-P1M1-0.5A
Each
HK$197.20
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 630A, Breaking Capacity 9 kA, Fixed Mount
  • RS Stock No. 232-063
  • Mfr. Part No. 110909 NZMH3-4-AE630/400-T
Each
HK$45,303.71
Temporarily out of stock
Siemens ALPHA Assembly Kit for use with Terminal Block
  • RS Stock No. 629-292
  • Mfr. Part No. 8GK4051-5KK11
Each
HK$1,461.85
In Stock
Eaton xEffect MCB, 1P, 1.6A Curve C, 240 → 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 270-5263
  • Mfr. Part No. 278548 FAZ-C1,6/1
Each
HK$454.30
Temporarily out of stock
Better World
ABB System Pro M Compact S200M MCB, 1P, 32A, Type Z
  • RS Stock No. 225-6010
  • Mfr. Part No. 2CDS271001R0538 S201M Z 32A - 15 KA
Each
HK$376.96
Limited stock
Better World
Schneider Electric Acti 9 4 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2774
  • Mfr. Part No. A9XPH518
Each
HK$545.90
Temporarily out of stock
Eaton xEffect MCB, 3P, 20A Curve B, 400V AC, 25 kA Breaking Capacity
  • RS Stock No. 244-675
  • Mfr. Part No. 174506 AZ-3-B20
Each
HK$2,622.80
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 15A Curve D, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 243-543
  • Mfr. Part No. 102149 FAZ-D15/1-RT
Each
HK$600.83
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 150A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 269-914
  • Mfr. Part No. 3VA6115-6HL41-0AA0
Each
HK$15,402.00
Temporarily out of stock
Better World
Schneider Electric Acti 9 A9N1 MCB, 4P, 125A Curve D
  • RS Stock No. 219-8303
  • Mfr. Part No. A9N18525
Each
HK$6,399.00
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 16A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 211-3750
  • Mfr. Part No. 3VA1196-6EF36-0AA0
Each
HK$3,555.70
Temporarily out of stock
Better World
Siemens SENTRON 5SL4 MCB, 3+N, 6A Curve B, 400V AC, 72V DC
  • RS Stock No. 210-3370
  • Mfr. Part No. 5SL4406-6
Each
HK$1,255.40
Temporarily out of stock
Better World
Schneider Electric Linergy Busbar Adapter, 690V, 60mm Pitch
  • RS Stock No. 211-0822
  • Mfr. Part No. LA9ZA32442
Each (In a Pack of 4)
HK$811.483
In Stock
Better World
Schneider Electric Acti 9 Acti9 iDT40N MCB, 3P, 20A Curve C
  • RS Stock No. 218-3906
  • Mfr. Part No. A9P24720
Each
HK$1,322.20
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 600A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-578
  • Mfr. Part No. 3VA6560-6JQ42-2AA0
Each
HK$68,974.00
Temporarily out of stock
Better World
Schneider Electric Multi 9 C60BP MCB, 3P, 5A Curve D, 440V AC, 15 kA Breaking Capacity
  • RS Stock No. 211-2453
  • Mfr. Part No. M9F43305
Each
HK$2,303.60
Temporarily out of stock
SENTRON Wire Connector for use with 3VA61/62 Series
  • RS Stock No. 263-763
  • Mfr. Part No. 3VA9144-0JB11
1 Kit
HK$295.60
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