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

1777 of 999+
Temporarily out of stock
ABB Tmax Rear Terminal for use with Tmax T
  • RS Stock No. 237-5997
  • Mfr. Part No. 1SDA060427R1 R T6 6PCS
Each
HK$2,635.41
Temporarily out of stock
Eaton xEffect MCB, 2P, 40A Curve D, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 769-4801
  • Mfr. Part No. 168076 FAZ6-D40/2
Each
HK$637.14
Temporarily out of stock
ABB Circuit Breaker Accessory
  • RS Stock No. 231-9292
  • Mfr. Part No. 1SDA073687R1 YC E1.2..E6.2-XT7M 220-24
Each
HK$1,397.61
In Stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 125A, Breaking Capacity 4 kA, Plug In
  • RS Stock No. 229-855
  • Mfr. Part No. 113223 NZMC2-M125-SVE
Each
HK$8,789.16
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 70A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 269-719
  • Mfr. Part No. 3VA5270-5EC31-1AA0
Each
HK$7,508.50
In Stock
Better World
Schneider Electric iID RCCB, 63A, 4 Pole, 30mA, Type B-SI, 400V ac
  • RS Stock No. 248-3720
  • Mfr. Part No. A9Z61463
Each
HK$15,008.80
Temporarily out of stock
Siemens, SENTRON MCCB 3P 1A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-585
  • Mfr. Part No. 3VA5181-1MH31-0AA0
Each
HK$4,477.80
In Stock
Better World
Siemens SENTRON 3VA1 MCB, 2P, 32A
  • RS Stock No. 224-7845
  • Mfr. Part No. 3VA1132-5ED26-0AA0
Each
HK$2,947.80
Temporarily out of stock
Siemens SENTRON 5SJ4350 MCB, 3P, 50A Curve C, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 300-084
  • Mfr. Part No. 5SJ4350-7HG41
Each
HK$3,893.60
Temporarily out of stock
Lovato ModuLo P1MB MCB, 3P, 63A Curve B, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 825-5826
  • Mfr. Part No. P1MB3PB63
Each
HK$741.50
Temporarily out of stock
Better World
Schneider Electric, PowerPact MCCB Molded Case Circuit Breaker 3P 40A
  • RS Stock No. 221-1093
  • Mfr. Part No. NHDF36040TW
Each
HK$6,017.20
Temporarily out of stock
ABB RCBO, 13A Current Rating, 4P Poles, Type C
  • RS Stock No. 237-5207
  • Mfr. Part No. 2CSR274101R1134
Each
HK$3,559.57
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 9 kA, Withdrawable
  • RS Stock No. 239-855
  • Mfr. Part No. 192275 NZMH3-PX400-TAZ-AVE
Each
HK$64,945.00
Temporarily out of stock
Legrand DX3 RCD, 32A, 1+N Pole, 30mA, Type AC
  • RS Stock No. 731-9944
  • Mfr. Part No. 4 111 61
Each
HK$3,855.57
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 630A, Fixed Mount
  • RS Stock No. 250-4252
  • Mfr. Part No. 1SDA054550R1
Each
HK$61,140.15
Temporarily out of stock
Siemens 5SM2323 RCCB, 40A, 2 Pole, 30mA, Type AC, 230V ac
  • RS Stock No. 231-8299
  • Mfr. Part No. 5SM2323-0
Each
HK$971.90
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 450A, Breaking Capacity 9 kA, Withdrawable
  • RS Stock No. 246-909
  • Mfr. Part No. 192339 NZMH3-PMX450-AVE
Each
HK$41,087.30
In Stock
Eaton xEffect MCB, 1P, 2A Curve D, 240V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-7027
  • Mfr. Part No. 278572 FAZ-D2/1
Each
HK$214.10
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 100/160/250 Circuit Breakers
  • RS Stock No. 260-9378
  • Mfr. Part No. C1047E100
Each
HK$30,212.10
In Stock
Better World
Schneider Electric, ComPact MCCB, Fixed Mount
  • RS Stock No. 221-0946
  • Mfr. Part No. LV429406
Each
HK$1,676.70
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