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

39184 Products showing for Circuit Breakers

225 of 999+
Temporarily out of stock
Allen Bradley, 140G MCCB 3P 125A, Module Frame Mount
  • RS Stock No. 261-2818
  • Mfr. Part No. 140G-G2C3-C25
Each
€230.24(exc. VAT)
Temporarily out of stock
Better World
Siemens RCBO, 125A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type B, Sentron Range
  • RS Stock No. 243-6150
  • Mfr. Part No. 5SU1324-6KK82
Each
€1,477.40(exc. VAT)
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA10/11
  • RS Stock No. 153-377
  • Mfr. Part No. 3VA9113-0JJ12
Each
€49.81(exc. VAT)
In Stock
Eaton 3 Phase Busbar, 690V ac, 45mm Pitch
  • RS Stock No. 178-8003
  • Mfr. Part No. 232290 B3.0/5-PKZ0
Each
€24.37(exc. VAT)
In Stock
Better World
Siemens RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type A, SENTRON Range
  • RS Stock No. 187-3283
  • Mfr. Part No. 5SV1316-6KK16
Each
€122.28(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 3P 160A, Fixed Mount
  • RS Stock No. 236-6651
  • Mfr. Part No. 1SDA068255R1 XT3N 250 TMG 160A FF
Each
€677.24(exc. VAT)
Temporarily out of stock
Siemens SENTRON Undervoltage Release for use with 3VA1 and 3VA20-26
  • RS Stock No. 157-835
  • Mfr. Part No. 3VA9908-0BB27
Each
€121.58(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4003
  • Mfr. Part No. 3VA2110-7KQ42-0AA0
Each
€1,781.83(exc. VAT)
Temporarily out of stock
ABB Isolator Circuit Trip for use with Commanding Load
  • RS Stock No. 231-9591
  • Mfr. Part No. 2CDE282001R0125 E202/125r
1 Box of 1
€86.29(exc. VAT)
In Stock
Better World
Siemens Sentron 5SY7 MCB, 1P, 10A Curve C, 230V AC, 15 kA Breaking Capacity
  • RS Stock No. 622-0222
  • Mfr. Part No. 5SY7110-7
Each
€26.42(exc. VAT)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 1+N, 4A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1408
  • Mfr. Part No. 5SY4504-7
Each
€74.15(exc. VAT)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 3P, 16A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 383-2125
  • Mfr. Part No. 5SY4316-7
Each
€96.17(exc. VAT)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 3P, 10A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1372
  • Mfr. Part No. 5SY4310-7
Each
€96.17(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 200A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 256-533
  • Mfr. Part No. 3VA5320-7EC31-1AA0
Each
€1,463.89(exc. VAT)
In Stock
Better World
Schneider Electric Busbar Feed Unit, Canalis KBA Series
  • RS Stock No. 211-0357
  • Mfr. Part No. KBA40ABG4W
Each
€38.48(exc. VAT)
Temporarily out of stock
Legrand RCBO, 2P, 45A, 250V AC
  • RS Stock No. 255-2313
  • Mfr. Part No. 401003
Each
€225.63(exc. VAT)
Temporarily out of stock
Siemens SENTRON Cover for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 266-469
  • Mfr. Part No. 3VW9724-0WD40
1 Kit
€127.33(exc. VAT)
Temporarily out of stock
Better World
Siemens Sentron 5SY4 MCB, 4P, 1A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 124-3183
  • Mfr. Part No. 5SY4401-7
Each
€178.85(exc. VAT)
In Stock
Allen Bradley 1492 1492-SPM MCB, 2P, 6A Curve B, 277V AC, 96V DC, 10 kA Breaking Capacity
  • RS Stock No. 125-1432
  • Mfr. Part No. 1492-SPM2B060
Each
€45.44(exc. VAT)
Temporarily out of stock
Schneider Electric, C160 MCCB 4P 1.6kA, Breaking Capacity 415 V ac, Fixed Mount
  • RS Stock No. 335-133
  • Mfr. Part No. C160H4FM
Each
€9,939.00(exc. VAT)
1
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