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

4 of 999+
Limited stock
ETA REX12 Electronic Circuit breaker 10A 24V REX12-T, DIN Rail Mount
  • RS Stock No. 175-0369
  • Mfr. Part No. REX12-TA1-107-DC24V-10A
Each
HK$365.60
In Stock
Schneider Electric Acti9 1 Phase Distribution Board, 8 Way, 125 A
  • RS Stock No. 244-933
  • Mfr. Part No. SE125A8
Each
HK$1,401.54
In Stock
ABB F200 RCCB, 40A, 2 Pole, 30mA, Type B, 230V
  • RS Stock No. 289-1618
  • Mfr. Part No. 2CSF202568R1400
Each
HK$4,267.32
In Stock
Better World
Schneider Electric Multi 9 M9F4 MCB, 1P, 8A, Type Z, 415V AC, 60V DC, 20 kA, 3 kA Breaking Capacity
  • RS Stock No. 211-2676
  • Mfr. Part No. M9F44108
Each
HK$304.40
Temporarily out of stock
Better World
Siemens 3VA911 RCD, 160A, 3 Pole, Type A
  • RS Stock No. 210-9286
  • Mfr. Part No. 3VA9113-0RS20
Each
HK$11,924.70
In Stock
ABB System Pro M Compact S200 MCB, 1P, 6A Curve C, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 488-6296
  • Mfr. Part No. 2CDS251001R0064 S201-C6
Each
HK$237.90
In Stock
ABB Tmax T Shunt Opening Release for use with MCCB
  • RS Stock No. 232-0106
  • Mfr. Part No. 1SDA054870R1 SOR-C 24VAC/DC T4-6
Each
HK$982.80
In Stock
Better World
Schneider Electric Acti 9 2 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2720
  • Mfr. Part No. A9XPH212
Each
HK$192.90
Temporarily out of stock
Hager RCBO, 20A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type AC
  • RS Stock No. 251-2018
  • Mfr. Part No. ADC720F
Each
HK$2,222.67
In Stock
Better World
Schneider Electric Acti 9 Acti9 iDT40K MCB, 3P, 32A Curve C, 400V AC
  • RS Stock No. 239-9977
  • Mfr. Part No. A9P71732
Each
HK$1,136.60
Temporarily out of stock
Better World
Siemens, SENTRON Circuit breaker 4P 160A, DIN Rail Mount
  • RS Stock No. 224-7905
  • Mfr. Part No. 3VA1216-5GF42-0AA0
Each
HK$11,352.60
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4678
  • Mfr. Part No. 3VA2140-7MP32-0AA0
Each
HK$11,072.30
In Stock
Better World
Schneider Electric Acti 9 1 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2711
  • Mfr. Part No. A9XPH106
Each
HK$89.10
In Stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 231-9327
  • Mfr. Part No. 1SDA100345R1 XT5N 400 TMA 400-4000 3pFF
Each
HK$9,516.80
In Stock
Better World
Siemens SENTRON 5SY MCB, 1P, 2A, Type A
  • RS Stock No. 232-2282
  • Mfr. Part No. 5SY4102-5
Each
HK$385.00
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 4P 160A, Fixed Mount
  • RS Stock No. 236-6710
  • Mfr. Part No. 1SDA068356R1 XT4H 160 TMA 160A 3P+N FF
Each
HK$10,190.90
In Stock
Better World
Schneider Electric Acti9 iIDK RCCB, 25A, 2 Pole, 30mA, Type AC, 220 → 240V ac
  • RS Stock No. 238-3454
  • Mfr. Part No. A9R55225
Each
HK$898.10
In Stock
Schneider Electric Acti9 A9F MCB Mini Circuit Breaker, 2P, 16A Curve C, 500V AC, 10 kA Breaking Capacity
  • RS Stock No. 653-861
  • Mfr. Part No. A9F74216
Each
HK$910.80
Temporarily out of stock
Better World
Schneider Electric TeSys TeSyS GV MCB, 3P, 7A, 690V AC, 50 kA Breaking Capacity
  • RS Stock No. 175-1428
  • Mfr. Part No. GV4L07N
Each
HK$6,777.32
In Stock
ABB Tmax XT Auxiliary Contact for use with Circuit Breaker
  • RS Stock No. 232-0179
  • Mfr. Part No. 1SDA066422R1 AUX 250V XT1..XT4
Each
HK$275.50
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