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

51 of 999+
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 4P, 10A Curve K, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 202-977
  • Mfr. Part No. 2CDS274001R0427
Each
HK$3,939.32
Temporarily out of stock
ABB S800S MCB, 1P, 13A Curve D, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-863
  • Mfr. Part No. 2CCS861001R0131
Each
HK$1,609.90
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.25kA 1SDA07, 3 channels
  • RS Stock No. 259-3103
  • Mfr. Part No. 1SDA070956R1
Each
HK$59,307.16
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 6 kA, Fixed Mount
  • RS Stock No. 250-702
  • Mfr. Part No. 192366 NZMS3-PX250-BT
Each
HK$35,499.70
Temporarily out of stock
Eaton Electronic Circuit Breaker 8A 24V , 1 channels , DIN Rail
  • RS Stock No. 261-403
  • Mfr. Part No. PXS24E08A002 PXS24E-e8/F
Each
HK$395.80
In Stock
ABB RCBO, 63A Current Rating, 3P Poles, Type C
  • RS Stock No. 237-5073
  • Mfr. Part No. 2CSR253001R1634
Each
HK$3,320.24
In Stock
Rittal Polycarbonate Mounting Frame for Use with Interfaces And Sockets
  • RS Stock No. 230-4882
  • Mfr. Part No. 2482600
Each
HK$1,406.00
In Stock
ABB S301 MCB, 1P, 2A Curve C, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 201-279
  • Mfr. Part No. 2CDS381001R0024
Each
HK$970.51
Temporarily out of stock
Hager NGN MCB, 2P, 20A Curve D, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 144-4763
  • Mfr. Part No. NGN220
Each
HK$1,127.62
In Stock
Phoenix Contact Surge Protector, DIN Rail Mount
  • RS Stock No. 207-2736
  • Mfr. Part No. 2906810
Each
HK$1,223.10
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 4P, 20A Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 203-003
  • Mfr. Part No. 2CDS274061R0487
Each
HK$6,003.36
In Stock
Europa EUC3P EUC MCB, 3P, 25A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6597
  • Mfr. Part No. EUC3P25C
Each
HK$151.30
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 150A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 432-913
  • Mfr. Part No. NJGF36150TW
Each
HK$27,296.90
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 100A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 345-320
  • Mfr. Part No. C11F34V100B
Each
HK$23,988.27
Temporarily out of stock
Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 6 kA, Fixed Mount
  • RS Stock No. 253-187
  • Mfr. Part No. 192358 NZMS3-PX400
Each
HK$31,564.60
Temporarily out of stock
Siemens Sentron Short circuit alarm switch for use with 3VA Series Circuit Breaker
  • RS Stock No. 874-4528
  • Mfr. Part No. 3VA9988-0AB32
Each
HK$294.30
In Stock
Better World
Schneider Electric Acti 9 A9N1 MCB, 2P, 100A Curve D
  • RS Stock No. 221-0889
  • Mfr. Part No. A9N18502
Each
HK$2,474.10
Currently unavailable
Altech Thermal Circuit Breaker - V-EA 2 Pole 277V Voltage Rating DIN Rail Mount, 0.5A Current Rating
  • RS Stock No. 899-1733
  • Mfr. Part No. 2E05UM
Each
HK$295.90
In Stock
ABB High Performance S800N MCB, 2P, 80A Curve C, 400V AC, 36 kA Breaking Capacity
  • RS Stock No. 435-544
  • Mfr. Part No. 2CCG001229R0001
Each
HK$1,771.30
Temporarily out of stock
ABB SMISSLINE TP MCB, 1P, 1A, Type Z, 220V AC
  • RS Stock No. 246-2453
  • Mfr. Part No. 2CCS561001R1018
Each
HK$804.20
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