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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

39740 Products showing for Circuit Breakers

1 of 999+
In Stock
RS Better World
Schneider Electric Kaedra Enclosure
  • RS Stock No. 466-0527
  • Mfr. Part No. 13441
Subtotal (1 unit)
£84.16(exc. VAT)
£84.16/unit
In Stock
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)
£106.92/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 2-Pole, 16A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3344
  • Mfr. Part No. A9F54216
Subtotal (1 unit)
£72.15(exc. VAT)
£72.15/unit
In Stock
Schneider Electric Acti9 Acti9 3 Phase Distribution Board 250A 8 Way
  • RS Stock No. 339-831
  • Mfr. Part No. SEA9BPN8
Subtotal (1 unit)
£431.30(exc. VAT)
£431.30/unit
In Stock
RS Better World
Schneider Electric Mureva Enclosure
  • RS Stock No. 466-0533
  • Mfr. Part No. 13443
Subtotal (1 unit)
£106.87(exc. VAT)
£106.87/unit
In Stock
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)
£92.21/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 20A, Type C, 240V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3307
  • Mfr. Part No. A9F54120
Subtotal (1 unit)
£24.20(exc. VAT)
£24.20/unit
In Stock
Europa ECUBP Blanking Plate for use with Consumer Units, Garage Units & Shower Units
  • RS Stock No. 201-7936
  • Mfr. Part No. ECUBP
Subtotal (1 pair)
£4.01(exc. VAT)
£4.01/pair
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In Stock
ABB, SACE Tmax T, T5N Molded Case Circuit Breaker 4-Pole 400A, Breaking Capacity 20 kA, Fixed
  • RS Stock No. 232-0085
  • Mfr. Part No. 1SDA054325R1 T5N400 FF PR221-LS 400A
Subtotal (1 unit)
£1,637.85(exc. VAT)
£1,637.85/unit
In Stock
ETA ESX10 ESX10-T Electronic Circuit Breaker 1A 24V, DIN Rail
  • RS Stock No. 210-2123
  • Mfr. Part No. ESX10-TA-100-DC24V-1A-E
Subtotal (1 unit)
£110.30(exc. VAT)
£110.30/unit
In Stock
Europa Residual Current Circuit Breaker with Overload Protection, 16A Current Rating, 2-Pole, 30 mA Trip Sensitivity,
  • RS Stock No. 153-3459
  • Mfr. Part No. EUBLMC16C30A
Subtotal (1 unit)
£69.96(exc. VAT)
£69.96/unit
In Stock
Eaton xEffect Miniature Circuit Breaker, 1-Pole, 10A, Type B, 400V ac AC, 96 V dc DC, 15 kA Breaking Capacity
  • RS Stock No. 769-4387
  • Mfr. Part No. 239006 FAZ6-B10/1
Subtotal (1 unit)
£20.67(exc. VAT)
£20.67/unit
In Stock
nVent ERIFLEX Brass ERIFLEX 56866 Busbar
  • RS Stock No. 277-6178
  • Mfr. Part No. 568662
Subtotal (1 unit)
£24.23(exc. VAT)
£24.23/unit
In Stock
Eaton NZM Assembly Kit for use with N(S)4(-4), NZM4(-4)
  • RS Stock No. 258-429
  • Mfr. Part No. 271779 NZM4-XHB
Subtotal (1 unit)
£283.40(exc. VAT)
£283.40/unit
In Stock
ABB Residual Current Circuit Breaker with Overload Protection, 32A Current Rating, 2-Pole, Type C, RCBO DSH201 Range,
  • RS Stock No. 231-9949
  • Mfr. Part No. 2CSR255170R1324 DSH201 C32 A30
Subtotal (1 box of 1 unit)
£71.23(exc. VAT)
£71.23/box
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 10A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3388
  • Mfr. Part No. A9F54310
Subtotal (1 unit)
£106.92(exc. VAT)
£106.92/unit
In Stock
ABB 8 Plastic Consumer Unit, 63A, IEC60670, EN60439-3 IP65 MISTRAL65
  • RS Stock No. 811-1899
  • Mfr. Part No. 1SL1201A00 65P08X12
Subtotal (1 unit)
£25.95(exc. VAT)
£25.95/unit
In Stock
Schneider Electric Acti9 Acti9 1 Phase Distribution Board 125A 10 Way
  • RS Stock No. 339-679
  • Mfr. Part No. SEA9APN10
Subtotal (1 unit)
£153.36(exc. VAT)
£153.36/unit
In Stock
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)
£80.18/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 6A, Type B, 240V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3152
  • Mfr. Part No. A9F53106
Subtotal (1 unit)
£27.39(exc. VAT)
£27.39/unit
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Guides & Articles

RCBOs Guide
There are many things to consider when choosing the right RCBO. Find out more in our comprehensive RCBOs guide.
Read more
Distribution Boards Guide
Our distribution boards guide explains what they are, their uses and types, and how to connect distribution boards.
Read more
MCBs Guide
What are MCBs and how do they work? Discover all you need to know in our comprehensive guide.
Read more
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.
Read more

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