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

35874 Products showing for Circuit Breakers

20 of 999+
Better World
Siemens SENTRON 5SY4 MCB, 3+N, 32A Curve D, 400V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 209-6607
  • Mfr. Part No. 5SY4632-8
Each
TWD7,470.00(exc. VAT)
Hager NGN MCB, 3P, 25A, 400V AC, 10 Breaking Capacity
  • RS Stock No. 602-161
  • Mfr. Part No. NGN325
Each
TWD6,929.00(exc. VAT)
Better World
Schneider Electric Easy 9 EZ9 MCB, 1P, 40A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 850-8638
  • Mfr. Part No. EZ9F66140
Each
TWD159.00(exc. VAT)
Legrand DX3 RCCB, 40A, 1+N Pole, 30mA, Type A
  • RS Stock No. 732-0049
  • Mfr. Part No. 4 116 17
Each
TWD5,839.00(exc. VAT)
SENTRON Locking Device for use with 3VA55/65/66 Series
  • RS Stock No. 263-893
  • Mfr. Part No. 3VA9578-0LB10
Each
TWD6,490.00(exc. VAT)
Siemens SENTRON Wire Connector for use with 3VA15/25 1000
  • RS Stock No. 269-7213
  • Mfr. Part No. 3VA9504-0JG23
Each (In a Pack of 2)
TWD8,451.00(exc. VAT)
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC Single Pole 65V dc Voltage Rating DIN Rail, 3A Current Rating
  • RS Stock No. 135-433
  • Mfr. Part No. 0914112
1 Pack of 6
TWD16,636.00(exc. VAT)
Siemens SENTRON Mounting Plate for use with 3VA1 250
  • RS Stock No. 210-9320
  • Mfr. Part No. 3VA9211-0WK30
Each
TWD1,254.00(exc. VAT)
Better World
Siemens SENTRON 3VA1 MCB, 2P, 20A
  • RS Stock No. 224-7824
  • Mfr. Part No. 3VA1120-5ED26-0AA0
Each
TWD15,600.00(exc. VAT)
Better World
Schneider Electric Compact Nsx, Easypact Cvs Cable Connector for use with 2 Cables 50 mm2 → 120 mm2
  • RS Stock No. 221-1146
  • Mfr. Part No. LV429218
Each
TWD5,388.00(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 1kA, Breaking Capacity 31 kA, Fixed Mount
  • RS Stock No. 341-492
  • Mfr. Part No. C100H42AFM
Each
TWD502,495.00(exc. VAT)
Altech Thermal Circuit Breaker - V-EA 2 Pole 277V Voltage Rating DIN Rail Mount, 25A Current Rating
  • RS Stock No. 899-1777
  • Mfr. Part No. 2E25UM
Each
TWD1,059.00(exc. VAT)
Hager Hager NKN Circuit Breaker, 2P, 63A Curve C, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 599-798
  • Mfr. Part No. NKN263
Each
TWD8,762.00(exc. VAT)
Phoenix Contact Thermomagnetic Device Circuit Breaker Thermal Circuit Breaker - CB Single Pole 50V dc Voltage Rating,
  • RS Stock No. 212-8786
  • Mfr. Part No. 2800853
Each
TWD1,539.00(exc. VAT)
Altech Thermal Circuit Breaker - V-EA 2 Pole 277V Voltage Rating DIN Rail Mount, 32A Current Rating
  • RS Stock No. 899-1787
  • Mfr. Part No. 2E32UM
Each
TWD1,059.00(exc. VAT)
Hager Thermal Circuit Breaker - HAD 2P Pole Fixed, 45A Current Rating
  • RS Stock No. 602-096
  • Mfr. Part No. HDA245S
Each
TWD7,669.00(exc. VAT)
Phoenix Contact Thermal Circuit Breaker - CB TM1 Single Pole 50V dc Voltage Rating, 8A Current Rating
  • RS Stock No. 217-6362
  • Mfr. Part No. 2800864
Each
TWD1,542.00(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 16A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3344
  • Mfr. Part No. A9F54216
Each
TWD3,883.00(exc. VAT)
Better World
Siemens SENTRON 5SL4 MCB, 3+N, 2A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 209-6499
  • Mfr. Part No. 5SL4402-8
Each
TWD8,233.00(exc. VAT)
Schurter Thermal Circuit Breaker - T9 Single Pole 48 V dc, 240V ac Voltage Rating, 4A Current Rating
  • RS Stock No. 830-4284
  • Mfr. Part No. 4404.0097
Each
TWD131.00(exc. VAT)
Results per page
1
20
1794