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
RCDs
RCDs
Surge Protection Devices
Surge Protection Devices
Thermal Breakers
Thermal Breakers

39184 Products showing for Circuit Breakers

370 of 999+
Temporarily out of stock
Siemens SENTRON Interlock for use with 3VA51
  • RS Stock No. 275-981
  • Mfr. Part No. 3VA9158-0VF30
Each
€154.66(exc. VAT)
Temporarily out of stock
NZM4-4 Cover for use with N4-4, NZM4-4
  • RS Stock No. 255-999
  • Mfr. Part No. 266847 NZM4-4-XKSA
Each
€138.00(exc. VAT)
In Stock
Murrelektronik Limited Mico Pro Circuit Breaker
  • RS Stock No. 285-5881
  • Mfr. Part No. 9000-41012-0600000
Each
€79.24(exc. VAT)
Temporarily out of stock
ABB S800U MCB, 4P, 80A, Type Z, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-304
  • Mfr. Part No. 2CCS864017R0805
Each
€596.44(exc. VAT)
In Stock
ETA Thermal Circuit Breaker - 2210 Single Pole 277, 480V Voltage Rating DIN Rail Mount, 500mA Current Rating
  • RS Stock No. 282-8721
  • Mfr. Part No. 2210-T210-K0M1-H121-0.5A
Each
€61.48(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3756
  • Mfr. Part No. 3VA2025-5HL36-0AA0
Each
€485.81(exc. VAT)
Temporarily out of stock
ABB S801N MCB, 1P, 25A Curve C, 400V AC, 36 kA Breaking Capacity
  • RS Stock No. 140-847
  • Mfr. Part No. 2CCS891001R0254
Each
€75.14(exc. VAT)
Temporarily out of stock
ABB S800S MCB, 3P, 50A Curve B, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-180
  • Mfr. Part No. 2CCS863001R0505
Each
€321.08(exc. VAT)
Temporarily out of stock
Eaton Plate for use with N(S)4, NZM4
  • RS Stock No. 259-821
  • Mfr. Part No. 284473 NZM4-XKM2S-1600
Each
€154.00(exc. VAT)
In Stock
ABB Key Lock
  • RS Stock No. 811-1921
  • Mfr. Part No. 1SLM006500A1931
Each
€16.76(exc. VAT)
Temporarily out of stock
Rockwell Automation 1492-SP 1492-SPM MCB, 3P, 15A Curve C
  • RS Stock No. 218-8855
  • Mfr. Part No. 1492-SPM3C150
Each
€73.30(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric NSX400...630 Cover for use with Compact NSX
  • RS Stock No. 211-2662
  • Mfr. Part No. LV432534
Each
€69.09(exc. VAT)
Temporarily out of stock
Schneider Electric, Compact MCCB 4P 1.25kA, Fixed Mount
  • RS Stock No. 247-1766
  • Mfr. Part No. 33254
Each
€3,179.66(exc. VAT)
Temporarily out of stock
Siemens ALPHA Busbar Support for use with ALPHA 1250
  • RS Stock No. 629-085
  • Mfr. Part No. 8GK9720-0KK01
Each
€61.68(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-170
  • Mfr. Part No. 3VA5110-6ED41-0AA0
Each
€505.55(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4332 MCB, 3P, 32A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 300-062
  • Mfr. Part No. 5SJ4332-8HG42
Each
€300.13(exc. VAT)
Temporarily out of stock
Phoenix Contact EC-E Electronic Circuit Breaker 3A 24V EC-E, 1 channels , DIN Rail
  • RS Stock No. 135-549
  • Mfr. Part No. 0903044
Each (In a Pack of 6)
€108.503(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 260-560
  • Mfr. Part No. 3VA6325-8HN31-0AA0
Each
€2,409.54(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 260-468
  • Mfr. Part No. 3VA6340-8JQ31-0AA0
Each
€3,255.13(exc. VAT)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2kA Ekip Dip LI, 4 channels
  • RS Stock No. 259-4724
  • Mfr. Part No. 1SDA073001R1
Each
€9,052.11(exc. VAT)
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