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

52 of 999+
Better World
Siemens SENTRON 5SL4 MCB, 1P, 20A Curve B, 400V AC, 72V DC
  • RS Stock No. 210-3349
  • Mfr. Part No. 5SL4120-6
Each
TWD780.00(exc. GST)
Hager HMC MCB, 4P, 80A, 400V AC, 15 Breaking Capacity
  • RS Stock No. 602-116
  • Mfr. Part No. HMC480
Each
TWD26,500.00(exc. GST)
Better World
Schneider Electric Multi 9 C60BP MCB, 3P, 20A Curve D, 440V AC, 15 kA Breaking Capacity
  • RS Stock No. 211-2456
  • Mfr. Part No. M9F43320
Each
TWD10,226.00(exc. GST)
Siemens SENTRON 5SJ4 MCB, 1P, 32A Curve B, 400V AC, 60V DC, 14 kA Breaking Capacity
  • RS Stock No. 210-3346
  • Mfr. Part No. 5SJ4132-6HG40
Each
TWD2,083.00(exc. GST)
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 50A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3363
  • Mfr. Part No. A9F54250
Each
TWD2,906.00(exc. GST)
Better World
Siemens SENTRON 3VA1 MCB, 1P, 16A
  • RS Stock No. 224-7898
  • Mfr. Part No. 3VA1196-4ED16-0AA0
Each
TWD7,471.00(exc. GST)
Schneider Electric Acti9 SE10 MCB Mini Circuit Breaker, 3P, 50A Curve D, 415V AC, 10000 A Breaking Capacity
  • RS Stock No. 339-678
  • Mfr. Part No. SE10D350
Each
TWD3,530.00(exc. GST)
Better World
Siemens SENTRON 3VA1 MCB, 2P, 25A
  • RS Stock No. 224-7834
  • Mfr. Part No. 3VA1125-5ED22-0AA0
Each
TWD13,823.00(exc. GST)
Hager MJT MCB, 2P, 10A Curve C, 240 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 144-4949
  • Mfr. Part No. MJT710
Each
TWD1,168.00(exc. GST)
Rockwell Automation FB100 Busbar, 1000V
  • RS Stock No. 282-2336
  • Mfr. Part No. FB100416Q1
Each (In a Pack of 4)
TWD4,527.00(exc. GST)
Better World
Siemens SENTRON 5SY MCB, 2P, 6A, Type A
  • RS Stock No. 232-2291
  • Mfr. Part No. 5SY4206-5
Each
TWD4,026.00(exc. GST)
Better World
Siemens SENTRON 5SY4 MCB, 2P, 8A Curve D, 400V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 209-6590
  • Mfr. Part No. 5SY4208-8
Each
TWD3,522.00(exc. GST)
Better World
Siemens SENTRON 3VA1 MCB, 2P, 20A
  • RS Stock No. 224-7821
  • Mfr. Part No. 3VA1120-4ED26-0AA0
Each
TWD13,472.00(exc. GST)
Hager Hager MMN Circuit Breaker, 4P, 50A, Type AC, 415V AC, 15 kA Breaking Capacity
  • RS Stock No. 599-894
  • Mfr. Part No. MMN450
Each
TWD27,795.00(exc. GST)
Siemens SENTRON 5SJ MCB, 1P, 1A
  • RS Stock No. 232-2213
  • Mfr. Part No. 5SJ4101-7HG40
Each
TWD2,173.00(exc. GST)
Hager Hager NRN Circuit Breaker, 2P, 63A Curve C, 415V AC, 15 kA Breaking Capacity
  • RS Stock No. 599-705
  • Mfr. Part No. NRN263
Each
TWD8,642.00(exc. GST)
Hager Hager NGN Circuit Breaker, 3P, 63A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 599-791
  • Mfr. Part No. NGN363
Each
TWD13,811.00(exc. GST)
Siemens SENTRON 5SJ4 MCB, 1P, 5A Curve C, 14 kA Breaking Capacity
  • RS Stock No. 202-7225
  • Mfr. Part No. 5SJ4111-7HG40
Each
TWD2,173.00(exc. GST)
Siemens SIRIUS Cover for use with 3RV2
  • RS Stock No. 216-5983
  • Mfr. Part No. 3RV2901-0H
Each (In a Pack of 10)
TWD481.50(exc. GST)
Better World
Siemens Sentron 5SY4 MCB, 4P, 50A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 124-3209
  • Mfr. Part No. 5SY4450-8
Each
TWD12,298.00(exc. GST)
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