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

164 of 999+
In Stock
Better World
Schneider Electric iID RCCB, 100A, 4 Pole, 300mA, Type A-SI, 415V ac
  • RS Stock No. 248-3705
  • Mfr. Part No. A9R35491
Each
HK$6,695.20
Temporarily out of stock
Legrand DX Range DX3 MCB, 4P, 32A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 731-9752
  • Mfr. Part No. 4 079 01
Each
HK$2,024.24
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 231-382
  • Mfr. Part No. 113010 NZMN2-4-AF250-BT-NA
Each
HK$22,907.62
Temporarily out of stock
Better World
ABB, XT4N MCCB 4P 100A, Fixed Mount
  • RS Stock No. 236-6622
  • Mfr. Part No. 1SDA068160R1 XT4N 160 Ekip LSIG 100A FF
Each
HK$16,978.70
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 5kA 1SDA07, 4 / f channels
  • RS Stock No. 259-3950
  • Mfr. Part No. 1SDA071994R1
Each
HK$428,381.95
Temporarily out of stock
Omron Busbar
  • RS Stock No. 111-3542
  • Mfr. Part No. PYDN-31.0-080Y
Each
HK$125.50
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA 1SDA07, 3 channels
  • RS Stock No. 259-4079
  • Mfr. Part No. 1SDA072172R1
Each
HK$33,973.54
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 3P 10A, Fixed Mount
  • RS Stock No. 236-6520
  • Mfr. Part No. 1SDA067981R1 XT2V 160 Ekip LSI 10A FF
Each
HK$14,334.30
Last RS stock
Phoenix Contact Thermal Circuit Breaker - TCP 20/DC32V Single Pole 32V dc Voltage Rating On Base Element, 20A Current
  • RS Stock No. 652-3414
  • Mfr. Part No. 0700020
Each (In a Pack of 5)
HK$104.12
Temporarily out of stock
Phoenix Contact Thermomagnetic Device Circuit Breaker Thermal Circuit Breaker - CB Single Pole 50V dc Voltage Rating,
  • RS Stock No. 212-8791
  • Mfr. Part No. 2800863
Each
HK$372.40
Temporarily out of stock
Siemens ALPHA Assembly Kit for use with Modular Installation Devices
  • RS Stock No. 629-211
  • Mfr. Part No. 8GK4351-4KK21
Each
HK$1,556.16
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 268-387
  • Mfr. Part No. 3VA6110-8KP31-0AA0
Each
HK$18,917.60
Temporarily out of stock
Better World
Schneider Electric iC60 RCD, 63A
  • RS Stock No. 776-2907
  • Mfr. Part No. A9V39363
Each
HK$8,336.29
In Stock
Phoenix Contact Electronic Device Circuit Breaker Electronic Circuit breaker 8A 24V PTCB, 1 channels , DIN Rail Mount
  • RS Stock No. 207-2796
  • Mfr. Part No. 2908262
Each
HK$387.40
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IULNK1 Single Pole Panel Mount, 5A Current Rating
  • RS Stock No. 275-0334
  • Mfr. Part No. IULNK1-1REC4-52-5.00
1 Box of 5
HK$4,053.40
Temporarily out of stock
Better World
ABB, XT4H MCCB 3P 52A, Fixed Mount
  • RS Stock No. 236-6753
  • Mfr. Part No. 1SDA068448R1 XT4H 160 MA 125 FF
Each
HK$6,404.50
Temporarily out of stock
Better World
ABB, XT2H MCCB 3P 10A, Fixed Mount
  • RS Stock No. 236-7528
  • Mfr. Part No. 1SDA067857R1 XT2H 160 Ekip LS/I 10A FF
Each
HK$5,464.68
Temporarily out of stock
Siemens SENTRON 5SJ4113 MCB, 1P, 13A Curve D, 400V AC, 60V DC, 14 kA Breaking Capacity
  • RS Stock No. 299-725
  • Mfr. Part No. 5SJ4113-8HG40
Each
HK$384.10
Temporarily out of stock
Siemens, SENTRON MCCB 4P 175A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 148-012
  • Mfr. Part No. 3VA5217-7EC41-0AA0
Each
HK$12,866.20
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 4P, 50A Curve C, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 201-103
  • Mfr. Part No. 2CDS274061R0504
Each
HK$7,325.25
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