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

39059 Products showing for Circuit Breakers

1 of 999+
In Stock
TE Connectivity Thermal Circuit Breaker - W58 Single Pole 50 V dc, 250V ac Voltage Rating, 5A Current Rating
  • RS stock no. 782-0915
  • Mfr. Part No. W58-XB1A4A-5
Each
R 154.25(exc. VAT)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 1P, 20A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS stock no. 383-2052
  • Mfr. Part No. 5SY4120-7
Each
R 488.62(exc. VAT)
Temporarily out of stock
ETA Thermal Circuit Breaker - 4130 Single Pole 240V Voltage Rating Panel Mount, 60A Current Rating
  • RS stock no. 405-9258
  • Mfr. Part No. 4130-G211-K4M1-60A
Each
R 915.90(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 10A Curve C, 400V AC, 12 → 144V DC, 6 kA Breaking Capacity
  • RS stock no. 734-9068
  • Mfr. Part No. A9F77210
Each
R 905.87(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller Series NZM MCCB Molded Case Circuit Breaker 3P 32A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS stock no. 230-938
  • Mfr. Part No. 107775 NZMB2-A32-BT-NA
Each
R 13,106.80(exc. VAT)
In Stock
TE Connectivity Thermal Circuit Breaker - W54 Single Pole 250V ac Voltage Rating, 20A Current Rating
  • RS stock no. 782-7988
  • Mfr. Part No. W54-XB1A4A10-20
Each
R 97.05(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON 5SY4 MCB, 3+N, 40A Curve C, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS stock no. 209-6670
  • Mfr. Part No. 5SY4640-7
Each
R 3,737.05(exc. VAT)
In Stock
RS PRO Residential RCCBs, 40A, 2 Pole, 300mA, Type A, 230V
  • RS stock no. 284-2370
Each
R 1,488.60(exc. VAT)
In Stock
Eaton xEffect MCB, 1P, 4A Curve C, 230V AC, 60V DC, 10 kA Breaking Capacity
  • RS stock no. 624-0327
  • Mfr. Part No. 278553 FAZ-C4/1
Each
R 672.88(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 25 kA, Fixed Mount
  • RS stock no. 874-4203
  • Mfr. Part No. 3VA1116-3EE36-0AA0
Each
R 8,086.35(exc. VAT)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 6A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS stock no. 746-7706
  • Mfr. Part No. 2CDS252001R0064 S202-C6
Each
R 1,141.07(exc. VAT)
In Stock
RS PRO MCB, 1P, 6A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS stock no. 265-0204
Each
R 221.42(exc. VAT)
In Stock
Eaton Eaton Moeller NZM Assembly Kit for use with N(S)2(-4), NZM2(-4), PN2(-4)
  • RS stock no. 255-620
  • Mfr. Part No. 266627 NZM2-XHB
Each
R 2,599.52(exc. VAT)
In Stock
Better World
Siemens SENTRON 5SY5 MCB, 1P, 20A Curve C, 400V AC, 220V DC, 10 kA Breaking Capacity
  • RS stock no. 212-8888
  • Mfr. Part No. 5SY5120-7
Each
R 1,034.77(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 2P, 25A Curve C, 15 kA Breaking Capacity
  • RS stock no. 219-9278
  • Mfr. Part No. A9F94225
Each
R 3,092.01(exc. VAT)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 1P, 20A Curve D, 230V AC, 10 kA Breaking Capacity
  • RS stock no. 772-1265
  • Mfr. Part No. 5SY4120-8
Each
R 522.68(exc. VAT)
Currently unavailable
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 1A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS stock no. 791-3275
  • Mfr. Part No. A9F54101
Each
R 554.65(exc. VAT)
In Stock
Better World
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 250A, Fixed Mount
  • RS stock no. 232-0281
  • Mfr. Part No. 1SDA068475R1 XT4S 250 Ekip LS/I 250A FF
Each
R 20,078.85(exc. VAT)
In Stock
Allen Bradley 1492-RCDA RCD, 25A, 2 Pole, 30mA, Type A
  • RS stock no. 218-8688
  • Mfr. Part No. 1492-RCDA2A25-US
Each
R 2,475.72(exc. VAT)
In Stock
Better World
Siemens SENTRON 5SY5 MCB, 2P, 10A Curve C, 10 kA Breaking Capacity
  • RS stock no. 203-2341
  • Mfr. Part No. 5SY5210-7
Each
R 2,574.52(exc. VAT)
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