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

39047 Products showing for Circuit Breakers

247 of 999+
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 16A Curve D, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS stock no. 254-986
  • Mfr. Part No. 240819 FAZT-D16/1
Each
R 1,277.22(exc. VAT)
Temporarily out of stock
Hager NSN MCB, 2P, 20A Curve D, 415V AC, 25 kA Breaking Capacity
  • RS stock no. 597-953
  • Mfr. Part No. NSN220
Each
R 4,420.88(exc. VAT)
Temporarily out of stock
Phoenix Contact Thermal Circuit Breaker - Single Pole 32V dc Voltage Rating Base Mounting, 20A Current Rating
  • RS stock no. 609-776
  • Mfr. Part No. 1499969
Each
R 147.51(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 350A, Breaking Capacity 9 kA, Plug In
  • RS stock no. 240-910
  • Mfr. Part No. 191373 NZMH3-MX350-SVE
Each
R 57,488.37(exc. VAT)
Limited stock
ABB SN201 MCB, 1+N, 16A Curve C, 230V AC, 4.5 kA Breaking Capacity
  • RS stock no. 191-9457
  • Mfr. Part No. 2CSS245102R0164 SN201 L C16-L
Each
R 273.27(exc. VAT)
Temporarily out of stock
Siemens Siemens Busbar
  • RS stock no. 627-441
  • Mfr. Part No. 8PQ6000-7BA07
Each
R 11,325.64(exc. VAT)
In Stock
ABB High Performance S800C MCB, 3P, 80A Curve C
  • RS stock no. 231-9579
  • Mfr. Part No. 2CCG001232R0001
1 Box of 1
R 6,856.48(exc. VAT)
Temporarily out of stock
Eaton RCBO, 20A Current Rating, 3P Poles, 100mA Trip Sensitivity, Type A, Type C, FRBmM Range
  • RS stock no. 123-293
  • Mfr. Part No. 170746 FRBMM-C20/3/01-A
Each
R 4,161.91(exc. VAT)
In Stock
Eaton xEffect MCB, 2P, 8A Curve B, 240 → 415V AC, 10 kA Breaking Capacity
  • RS stock no. 847-3190
  • Mfr. Part No. 278729 FAZ-B8/2
Each
R 1,630.39(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON 5SL4 MCB, 3+N, 32A Curve B, 400V AC, 72V DC
  • RS stock no. 210-3390
  • Mfr. Part No. 5SL4632-6
Each
R 3,242.83(exc. VAT)
In Stock
Better World
Siemens SENTRON 5SL6 MCB, 2P, 6A Curve B, 400V AC, 72V DC
  • RS stock no. 212-9001
  • Mfr. Part No. 5SL6206-6
Each
R 1,252.60(exc. VAT)
Temporarily out of stock
Siemens Alpha Assembly Kit for use with Unequipped Distribution Boards
  • RS stock no. 212-9056
  • Mfr. Part No. 8GK4301-4KK22
Each
R 7,908.36(exc. VAT)
In Stock
Legrand Circuit Breaker, 2P, 16A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS stock no. 266-1395
  • Mfr. Part No. 408015
Each
R 2,972.58(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY Circuit Breaker, 3P+N, 63A Curve D, 440V AC, 60V DC, 20 kA Breaking Capacity
  • RS stock no. 664-338
  • Mfr. Part No. 5SY8663-8
Each
R 12,797.77(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 85 kA, Fixed Mount
  • RS stock no. 270-3555
  • Mfr. Part No. 3VA2010-6JP36-0AA0
Each
R 23,253.85(exc. VAT)
In Stock
Eaton NZM Door Coupling Handle for use with N(S)4(-4), NZM4(-4)
  • RS stock no. 125-616
  • Mfr. Part No. 172534 NZM4-XTVDKL
Each
R 8,064.57(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA
  • RS stock no. 245-246
  • Mfr. Part No. 3VA6210-7KM41-2AA0
Each
R 65,292.95(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 4 channels
  • RS stock no. 156-646
  • Mfr. Part No. 3VA2216-5JP42-0AA0
Each
R 35,329.83(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 55 kA, Fixed Mount
  • RS stock no. 211-3801
  • Mfr. Part No. 3VA2325-5KP32-0AA0
Each
R 36,491.73(exc. VAT)
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA4/5 125
  • RS stock no. 269-7086
  • Mfr. Part No. 3VA9133-0JJ12
Each (In a Pack of 3)
R 439.98(exc. VAT)
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