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

35885 Products showing for Circuit Breakers

5 of 999+
TE Connectivity Thermal Magnetic Circuit Breakers - Potter & Brumfield W54 Single Pole 250V ac Voltage Rating Panel
  • RS Stock No. 240-8954
  • Mfr. Part No. 3-1393250-2
Each (In a Bag of 100)
TWD204.90(exc. GST)
Better World
Schneider Electric Acti 9 C120H MCB, 4P, 80A Curve D, 440V AC, 500V DC, 15 kA, 30 kA Breaking Capacity
  • RS Stock No. 776-3048
  • Mfr. Part No. A9N18523
Each
TWD21,392.00(exc. GST)
Better World
Schneider Electric iID RCCB, 63A, 4 Pole, 500mA, Type B-SI, 400V ac
  • RS Stock No. 248-3728
  • Mfr. Part No. A9Z66463
Each
TWD64,851.00(exc. GST)
ETA Thermal Circuit Breaker - 2 5700 Single Pole 250V Voltage Rating Panel Mount, 10A Current Rating
  • RS Stock No. 729-2758
  • Mfr. Part No. 2-5700-IG2-P10-DD-000040-10A
Each
TWD730.00(exc. GST)
Siemens, SENTRON MCCB 3P 80A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 147-563
  • Mfr. Part No. 3VA5180-5ED31-1AA0
Each
TWD18,009.00(exc. GST)
ABB Emax2 Electronic Circuit Breaker 6.3kA 1SDA07, 4 / f channels
  • RS Stock No. 259-3975
  • Mfr. Part No. 1SDA072027R1
Each
TWD2,721,246.00(exc. GST)
Better World
Siemens RCBO, 6A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Sentron Range
  • RS Stock No. 772-1183
  • Mfr. Part No. 5SU1356-7KK06
Each
TWD5,363.00(exc. GST)
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 20A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3348
  • Mfr. Part No. A9F54220
Each
TWD3,948.00(exc. GST)
Eaton Circuit Breaker - NZM..-ME..NA 3 Pole 690V ac Voltage Rating, 200A Current Rating
  • RS Stock No. 250-9705
  • Mfr. Part No. 118966 NZMN2-ME200-NA
Each
TWD85,378.00(exc. GST)
Carling Technologies Thermal Circuit Breaker - C Single Pole 240V Voltage Rating Panel Mount, 10A Current Rating
  • RS Stock No. 881-0820
  • Mfr. Part No. CA1-B0-34-610-121-C
Each
TWD995.00(exc. GST)
Siemens SENTRON Connection Unit for use with Circuit Breaker Busbar
  • RS Stock No. 269-8417
  • Mfr. Part No. 8US1600-0RF02
Each (In a Pack of 12)
TWD519.50(exc. GST)
Better World
Siemens Sentron 5SY4 MCB, 1P, 25A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1262
  • Mfr. Part No. 5SY4125-7
Each
TWD2,150.00(exc. GST)
Siemens 3 Phase Surge Protector, 50kA, DIN Rail Mount
  • RS Stock No. 211-0182
  • Mfr. Part No. 5SD7414-2
Each
TWD15,132.00(exc. GST)
Better World
Siemens Sentron 5SY4 MCB, 1P, 32A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 383-2068
  • Mfr. Part No. 5SY4132-7
Each
TWD2,115.00(exc. GST)
Better World
ABB Emax2 Electronic Circuit Breaker 630A 1SDA07, 3 channels
  • RS Stock No. 259-9897
  • Mfr. Part No. 1SDA070730R1
Each
TWD378,069.00(exc. GST)
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 80A Current Rating
  • RS Stock No. 175-1550
  • Mfr. Part No. GV4PE80B
Each
TWD11,976.00(exc. GST)
ABB RCBO, 63A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 231-9959
  • Mfr. Part No. 2CSR272001R1634 DS202 M AC-C63/0,03
Each
TWD7,582.00(exc. GST)
Siemens SENTRON 2 Phase Busbar, 18mm Pitch
  • RS Stock No. 213-2572
  • Mfr. Part No. 5ST3706
Each
TWD951.00(exc. GST)
Weidmuller Electronic Circuit breaker 25mA 24V AMG ELM, 1 channels , DIN Rail Mount
  • RS Stock No. 179-2993
  • Mfr. Part No. 2080410000
Each
TWD1,871.00(exc. GST)
Phoenix Contact Electronic Device Circuit Breaker Electronic Circuit breaker 2A 24V PTCB, 1 channels , DIN Rail Mount
  • RS Stock No. 207-2803
  • Mfr. Part No. 2909903
Each
TWD1,413.00(exc. GST)
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