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

1769 of 999+
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 3P 125A, Breaking Capacity 7.5 kA, Plug In
  • RS Stock No. 230-877
  • Mfr. Part No. 113243 NZMN2-A125-SVE
Each
HK$9,644.83
Temporarily out of stock
ABB SU200 M MCB, 3P, 50A Curve C, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 203-916
  • Mfr. Part No. 2CDS273337R0504
Each
HK$3,839.89
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2.5kA Ekip G Hi-Touch LSIG, 4 channels
  • RS Stock No. 259-3766
  • Mfr. Part No. 1SDA071760R1
Each
HK$214,191.30
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 1+N, 3A, Type Z
  • RS Stock No. 237-3204
  • Mfr. Part No. 2CDS251103R0318
Each
HK$752.70
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 1+N, 1.6A Curve K
  • RS Stock No. 237-3203
  • Mfr. Part No. 2CDS251103R0257
Each
HK$710.01
Temporarily out of stock
ABB Tmax XT Flexible Bar for use with Tmax XT
  • RS Stock No. 237-6183
  • Mfr. Part No. 1SDA066968R1 FB XT3 8PCS
Each
HK$569.60
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 3 channels
  • RS Stock No. 259-4407
  • Mfr. Part No. 1SDA072588R1
Each
HK$262,431.20
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 2kA IZMX/INX, 4 channels , Withdrawable
  • RS Stock No. 132-746
  • Mfr. Part No. 183799 IZMX40H4-P20W-1
Each
HK$196,594.80
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 2P, 20A Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-360
  • Mfr. Part No. 2CDS272061R0487
Each
HK$2,545.49
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 500A 3VA, 4 channels
  • RS Stock No. 155-869
  • Mfr. Part No. 3VA2450-7HK42-0AA0
Each
HK$36,736.60
Temporarily out of stock
Siemens 5SV33 RCCB, 40A, 4 Pole, 30mA, Type B, 440V
  • RS Stock No. 328-443
  • Mfr. Part No. 5SV3344-4KK60
Each
HK$9,672.73
Temporarily out of stock
Better World
Schneider Electric RCBO, 40A Current Rating, 1P+N Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3346
  • Mfr. Part No. A9DV6640
Each
HK$3,421.94
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 3 channels
  • RS Stock No. 156-812
  • Mfr. Part No. 3VA2225-8JP32-0AA0
Each
HK$23,806.00
In Stock
Better World
Siemens SENTRON 5SY6 MCB, 2P, 25A Curve C, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 209-6682
  • Mfr. Part No. 5SY6225-7
Each
HK$726.20
Temporarily out of stock
Eaton Eaton Moeller IZMX/INX - ACB Interlock for use with INX16, INX40, IZMX16, IZMX40
  • RS Stock No. 246-514
  • Mfr. Part No. 184228 +IZMX-PLPC-M-OFF-1
Each
HK$1,274.20
In Stock
Europa EUC2P EUC MCB, 2P, 40A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6566
  • Mfr. Part No. EUC2P40C
Each
HK$149.20
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 5 kA, Withdrawable
  • RS Stock No. 240-820
  • Mfr. Part No. 192334 NZMN3-PMX250-AVE
Each
HK$34,182.20
Temporarily out of stock
ABB, SACE FORMULA MCCB Molded Case Circuit Breaker 1P 63A, Fixed Mount
  • RS Stock No. 231-9300
  • Mfr. Part No. 1SDA075871R1 KIT FC Cu XT1 14-1/0 AWG 6
Each
HK$1,397.61
In Stock
Schurter TA36 Rocker Circuit Breaker - TA36 2 Pole 60 V dc, 277 V ac Voltage Rating, 3A Current Rating
  • RS Stock No. 221-5635
  • Mfr. Part No. 3-128-239
Each
HK$156.50
In Stock
Better World
Siemens RCBO, 16A Current Rating, 4P Poles, 300mA Trip Sensitivity, Type B, Sentron Range
  • RS Stock No. 243-6242
  • Mfr. Part No. 5SU1646-6FP16
Each
HK$2,425.50
1
1769
1793
Results per page

Related links