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

256 of 999+
Temporarily out of stock
ABB RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6890
  • Mfr. Part No. 2CSR275180R1404
Each
€159.97(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
Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 160A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 256-078
  • Mfr. Part No. 265860 NZMN2-4-A160
Each
€1,334.00(exc. VAT)
Temporarily out of stock
Siemens SENTRON Busbar Connector for use with 3VA1 250
  • RS Stock No. 272-0211
  • Mfr. Part No. 3VA9254-0QC00
Each
€89.96(exc. VAT)
In Stock
Better World
Schneider Electric, ComPacT NSX MCCB 4P 100A, Fixed Mount
  • RS Stock No. 254-6309
  • Mfr. Part No. C11B44V100L
Each
€1,340.18(exc. VAT)
In Stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-378
  • Mfr. Part No. 3VA5140-5ED31-1AA0
Each
€289.15(exc. VAT)
Temporarily out of stock
SENTRON Terminal for use with 3VA57/58, 3VA67/68 Series
  • RS Stock No. 263-678
  • Mfr. Part No. 3VA9773-0QE00
1 Kit
€206.68(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 45A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-639
  • Mfr. Part No. 3VA5145-5ED11-1AA0
Each
€156.38(exc. VAT)
In Stock
ETA Thermal Circuit Breaker - 1610 Single Pole 24V dc Voltage Rating, 10A Current Rating
  • RS Stock No. 409-889
  • Mfr. Part No. 1610-21-10A
Each
€12.98(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 6A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 654-732
  • Mfr. Part No. A9D73606
Each
€295.91(exc. VAT)
Temporarily out of stock
ABB Electronic Time Delay for use with E1, E1.2, E2, E2.2, E3, E4, E4.2, E6, E6.2, T7, T8, X1, XT7-XT7M
  • RS Stock No. 250-4513
  • Mfr. Part No. 1SDA038317R1
Each
€450.45(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-730
  • Mfr. Part No. 3VA6440-7HL41-2AA0
Each
€3,982.52(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)
In Stock
Allen Bradley 1492-SP 1492-SPM MCB, 2P, 15A Curve B
  • RS Stock No. 218-8789
  • Mfr. Part No. 1492-SPM2B150
Each
€44.29(exc. VAT)
Temporarily out of stock
WAGO Circuit Breaker, 16A, 250V AC, 250 V Breaking Capacity
  • RS Stock No. 279-4271
  • Mfr. Part No. 789-801
Each
€44.77(exc. VAT)
In Stock
Better World
Siemens SENTRON 5SL6 MCB, 3P, 13A Curve C, 400V AC, 72V DC
  • RS Stock No. 212-8872
  • Mfr. Part No. 5SL6313-7
Each
€79.08(exc. VAT)
Temporarily out of stock
Eaton xEffect MCB, 1+N, 40A Curve B
  • RS Stock No. 227-0670
  • Mfr. Part No. 239051 FAZ6-B40/1N
Each
€49.34(exc. VAT)
In Stock
Contactum 10 Way Steel Consumer Unit, 100A Defender
  • RS Stock No. 184-9106
  • Mfr. Part No. DD101MS
Each
€100.42(exc. VAT)
Temporarily out of stock
ABB S802N MCB, 2P, 20A Curve D, 690V AC, 36 kA Breaking Capacity
  • RS Stock No. 141-140
  • Mfr. Part No. 2CCS892001R0201
Each
€159.05(exc. VAT)
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