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. We offer Next Day Delivery on thousands of items and stock a wide range of products from trusted suppliers such as Schneider Electric, Siemens, ABB, and RS PRO. You’ll also find our Better World range, products designed with sustainability in mind to support more environmentally responsible choices.

Circuit Breaker Types

  • 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.

Protection Solutions

Alongside our range of circuit breakers, we also offer a variety of other electrical protection products to ensure complete safety and reliability across your installations:

These solutions are designed to work seamlessly with circuit breakers, providing layered protection and peace of mind.

  • Surge Protection Devices - Safeguard your systems from voltage spikes caused by lightning or switching events.
  • Consumer Units - Centralise and manage circuit protection in residential and commercial settings.
  • Distribution Boards - Efficiently distribute electrical power across multiple circuits with integrated protection.
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

39349 Products showing for Circuit Breakers

1 of 999+
In Stock
Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 16A, Type C, 240V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3297
  • Mfr. Part No. A9F54116
Subtotal (1 unit)
£24.20(exc. VAT)
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 1-Pole, 6A, Type C, 240V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0204
Subtotal (1 unit)
£8.66(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 Acti9 3 Phase Busbar, 415 V ac, 18 mm Pitch
  • RS Stock No. 776-2730
  • Mfr. Part No. A9XPH324
Subtotal (1 unit)
£64.47(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 Acti9 iDT40T Miniature Circuit Breaker, 3-Pole, 32A, Type C, 400V ac AC, 4500 A Breaking
  • RS Stock No. 238-3366
  • Mfr. Part No. A9P22332
Subtotal (1 unit)
£111.43(exc. VAT)
In Stock
ABB System Pro M Compact S200M Miniature Circuit Breaker, 3-Pole, 20A, Type C, 440V ac AC, 12 V dc DC, 10 kA Breaking
  • RS Stock No. 535-4295
  • Mfr. Part No. 2CDS273001R0204 S203M-C20
Subtotal (1 unit)
£79.86(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 2-Pole, 2A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3326
  • Mfr. Part No. A9F54202
Subtotal (1 unit)
£92.21(exc. VAT)
In Stock
nVent ERIFLEX Brass ERIFLEX 56866 Busbar
  • RS Stock No. 277-6178
  • Mfr. Part No. 568662
Subtotal (1 unit)
£24.23(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 20A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3391
  • Mfr. Part No. A9F54320
Subtotal (1 unit)
£106.92(exc. VAT)
Soft Starters
High Performing Soft Starters
Boost the efficiency and extend the lifespan of your industrial motors with RS PRO High-Performance Soft Starters. These cutting-edge devices are designed to reduce mechanical stress on motors and optimise energy consumption, particularly in lightly loaded scenarios. With their advanced features and intelligent design, they ensure your motors run smoothly and efficiently, saving you both time and energy.
Shop Now
In Stock
Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 4A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3376
  • Mfr. Part No. A9F54304
Subtotal (1 unit)
£129.67(exc. VAT)
In Stock
Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 2-Pole, 6A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3332
  • Mfr. Part No. A9F54206
Subtotal (1 unit)
£80.18(exc. VAT)
In Stock
Better World
Schneider Electric Multi9 Multi9 Miniature Circuit Breaker, 1-Pole, 3A, Type C, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 211-2355
  • Mfr. Part No. M9F22103
Subtotal (1 unit)
£24.44(exc. VAT)
In Stock
Better World
ABB System Pro M Compact S200M Miniature Circuit Breaker, 2-Pole, 10A, Type C, 440V ac AC, 125 V dc DC, 10 kA Breaking
  • RS Stock No. 132-071
  • Mfr. Part No. 2CDS272001R0104 S202M-C10
Subtotal (1 unit)
£52.80(exc. VAT)
In Stock
ABB Residual Current Circuit Breaker with Overload Protection, 16A Current Rating, 2-Pole, 30 mA Trip Sensitivity, Type
  • RS Stock No. 201-6932
  • Mfr. Part No. 2CSR275180R1164 DS201 M C16 A30
Subtotal (1 unit)
£133.31(exc. VAT)
In Stock
Siemens Copper Alpha 8GK Busbar
  • RS Stock No. 226-0831
  • Mfr. Part No. 8GK9733-0KK10
Subtotal (1 unit)
£37.75(exc. VAT)
Stocked by manufacturer
Eaton, NZM, NZM Molded Case Circuit Breaker 3-Pole 100A, Breaking Capacity 18.5 kA, Fixed
  • RS Stock No. 257-071
  • Mfr. Part No. 281267 NZMB1-S100-CNA
Subtotal (1 unit)
£567.09(exc. VAT)
In Stock
Better World
Siemens SENTRON 5SY4 Miniature Circuit Breaker, 1-Pole, 500mA, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 622-0042
  • Mfr. Part No. 5SY4105-7
Subtotal (1 unit)
£23.25(exc. VAT)
In Stock
Better World
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 6A Current Rating, 1-Pole, 30 mA Trip
  • RS Stock No. 790-9193
  • Mfr. Part No. A9D31806
Subtotal (1 unit)
£148.47(exc. VAT)
In Stock
Europa EUC1P EUC Miniature Circuit Breaker, 1-Pole, 4A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6490
  • Mfr. Part No. EUC1P4C
Subtotal (1 unit)
£10.24(exc. VAT)
In Stock
ABB 4 Plastic Consumer Unit, 63A, IEC 60670, EN 60439-3 IP65 MISTRAL65
  • RS Stock No. 811-1880
  • Mfr. Part No. 1SL1200A00 65P04X12
Subtotal (1 unit)
£23.18(exc. VAT)
In Stock
Europa EUC3P EUC3P Miniature Circuit Breaker, 3-Pole, 10A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6581
  • Mfr. Part No. EUC3P10C
Subtotal (1 unit)
£22.40(exc. VAT)
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RCBOs Guide
There are many things to consider when choosing the right RCBO. Find out more in our comprehensive RCBOs guide.
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Distribution Boards Guide
Our distribution boards guide explains what they are, their uses and types, and how to connect distribution boards.
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MCBs Guide
What are MCBs and how do they work? Discover all you need to know in our comprehensive guide.
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A Complete Guide to Industrial Surge Protection
Discover more in our guide and get to know the uses and importance of an industrial surge protection device.
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