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

1775 of 999+
Temporarily out of stock
Siemens SENTRON Busbar, 690V
  • RS Stock No. 265-560
  • Mfr. Part No. 8US1921-2BB01
1 Pack of 15
HK$705.30
Temporarily out of stock
ABB, Tmax XT MCCB 4P 1.6kA, Fixed Mount
  • RS Stock No. 236-6881
  • Mfr. Part No. 1SDA101117R1 XT7S1600 EkipDip LS/I 4pFF
Each
HK$53,177.62
In Stock
Eaton xEffect MCB, 3P, 32A Curve D, 240 → 415V AC, 96V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-7147
  • Mfr. Part No. 279001 FAZ-D32/3N
Each
HK$1,407.20
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA
  • RS Stock No. 209-6904
  • Mfr. Part No. 3VA2063-6KP32-0AA0
Each
HK$11,983.80
Temporarily out of stock
Better World
Siemens SENTRON Fire Safety Circuit Breaker, 1+N, 6A Curve C, 230V AC
  • RS Stock No. 238-3209
  • Mfr. Part No. 5SV6016-7MC06
Each
HK$2,642.30
Temporarily out of stock
ABB SU200 M MCB, 3P, 8A Curve K, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 200-201
  • Mfr. Part No. 2CDS273337R0407
Each
HK$3,259.77
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-301
  • Mfr. Part No. 3VA6440-6JT31-2AA0
Each
HK$33,340.80
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 4P, 20A Curve C, 400V AC, 60V DC, 30 kA Breaking Capacity
  • RS Stock No. 610-288
  • Mfr. Part No. 5SY8620-7
Each
HK$2,093.75
Temporarily out of stock
Eaton RCBO, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, Type B, FRBdM Range
  • RS Stock No. 120-974
  • Mfr. Part No. 168198 FRBDM-B10/2/003-G/A
Each
HK$1,712.66
Temporarily out of stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 125A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 232-0262
  • Mfr. Part No. 1SDA067559R1 XT2S 160 TMA 125A FF
Each
HK$3,496.70
Limited stock
TE Connectivity Thermal Circuit Breaker - W58 Single Pole 50 V dc, 250V ac Voltage Rating, 20A Current Rating
  • RS Stock No. 782-7981
  • Mfr. Part No. W58-XC4C12A-20
Each
HK$63.90
Temporarily out of stock
ABB Tmax Plug In Unit for use with T4
  • RS Stock No. 237-5975
  • Mfr. Part No. 1SDA054737R1 T4 PFP-EF
Each
HK$2,099.30
In Stock
Eaton 110 V dc, 250V ac Auxiliary Release Shunt trip for use with FAZ Series MCB/RCBO
  • RS Stock No. 922-6958
  • Mfr. Part No. 262414 FAZ-XAM002
Each
HK$398.50
Currently unavailable
ITT Cannon Fuse Carrier L2, 078214-9021
  • RS Stock No. 696-8882
  • Mfr. Part No. 078214-9021
Each
HK$5,779.60
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3681
  • Mfr. Part No. 3VA2025-7JQ32-0AA0
Each
HK$31,368.80
In Stock
TE Connectivity Thermal Circuit Breaker - W31 Single Pole 50 V dc, 240V ac Voltage Rating, 40A Current Rating
  • RS Stock No. 782-8094
  • Mfr. Part No. W31-X2M1G-40
Each
HK$426.00
Temporarily out of stock
Siemens SENTRON Switch Disconnector
  • RS Stock No. 277-0762
  • Mfr. Part No. 3WA9111-0AH24
1 Set
HK$3,589.90
In Stock
Eaton xPole PXL, S200 MCB, 1P, 6A Curve B, 400V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 486-952
  • Mfr. Part No. 236027 PXL-B6/1
Each
HK$121.50
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 16A, Fixed Mount
  • RS Stock No. 260-7655
  • Mfr. Part No. C11N4TM016B
Each
HK$6,678.08
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Touch LSIG, 3 channels
  • RS Stock No. 259-9956
  • Mfr. Part No. 1SDA070836R1
Each
HK$53,314.71
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