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

31 of 999+
In Stock
ETA ESX10 Electronic Circuit breaker 1A 24V ESX10-T, 1 channels , Slide Switch DIN Rail
  • RS stock no. 210-2131
  • Mfr. Part No. ESX10-TB-101-DC24V-1A-E
Each
R 2,082.43(exc. VAT)
In Stock
Lovato ModuLo P1MB MCB, 4P, 40A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS stock no. 825-5970
  • Mfr. Part No. P1MB4PC40
Each
R 2,796.58(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 15 kA, Fixed Mount
  • RS stock no. 229-662
  • Mfr. Part No. 110291 NZMH2-A100-BT
Each
R 15,072.32(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 400A, Fixed Mount
  • RS stock no. 260-8130
  • Mfr. Part No. C40N42D400
Each
R 90,528.07(exc. VAT)
In Stock
RS PRO Single Phase Industrial Surge Protector, 10kA, 1.1kV, DIN Rail Mount
  • RS stock no. 101-748
Each
R 568.50(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 A9N1 MCB, 2P, 100A Curve C
  • RS stock no. 219-8296
  • Mfr. Part No. A9N18458
Each
R 4,761.10(exc. VAT)
In Stock
Schneider Electric RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A-SI, Acti9 Range
  • RS stock no. 276-8719
  • Mfr. Part No. A9D27216
Each
R 11,246.95(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 125A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS stock no. 255-598
  • Mfr. Part No. 265809 NZMB1-4-A125
Each
R 19,028.94(exc. VAT)
In Stock
Better World
Schneider Electric Multi 9 C60N MCB, 1P, 6A Curve C, 10 kA Breaking Capacity
  • RS stock no. 214-2057
  • Mfr. Part No. M9F11106
Each
R 728.61(exc. VAT)
In Stock
Better World
ABB System Pro M Compact S200M MCB, 2P, 40A Curve B, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS stock no. 132-037
  • Mfr. Part No. 2CDS272001R0405 S202M-B40
Each
R 1,459.88(exc. VAT)
In Stock
Allen Bradley 1492 1492-SPM MCB, 1P, 3A Curve C, 277V AC, 48V DC, 10 kA Breaking Capacity
  • RS stock no. 125-1453
  • Mfr. Part No. 1492-SPM1C030
Each
R 520.95(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric RCBO, 32A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Acti 9 Range
  • RS stock no. 790-9471
  • Mfr. Part No. A9D56632
Each
R 6,618.74(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 63A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS stock no. 791-3366
  • Mfr. Part No. A9F54263
Each
R 2,448.26(exc. VAT)
Temporarily out of stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 630A, Fixed Mount
  • RS stock no. 232-0127
  • Mfr. Part No. 1SDA060202R1 T6N630 FF TMA 630A
Each
R 42,160.08(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON 5SL6 MCB, 1P, 32A Curve C, 6 kA Breaking Capacity
  • RS stock no. 202-7047
  • Mfr. Part No. 5SL6132-7
Each
R 409.17(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 400A, Fixed Mount
  • RS stock no. 260-8108
  • Mfr. Part No. C40H3
Each
R 22,705.00(exc. VAT)
In Stock
Lovato ModuLo P2MB MCB, 3P, 125A Curve C, 230V AC, 60V DC, 10 kA Breaking Capacity
  • RS stock no. 825-6172
  • Mfr. Part No. P2MB3PC125
Each
R 5,354.97(exc. VAT)
In Stock
ABB F200 RCCB, 25A, 2 Pole, 30mA, Type A, 230V ac
  • RS stock no. 488-6915
  • Mfr. Part No. 2CSF202101R1250 - F202A-25/0.03
Each
R 2,121.84(exc. VAT)
In Stock
RS PRO MCB, 1P, 1A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS stock no. 265-0194
Each
R 221.25(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 40A Curve D, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS stock no. 791-3578
  • Mfr. Part No. A9F55340
Each
R 3,132.85(exc. VAT)
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