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

39049 Products showing for Circuit Breakers

76 of 999+
Temporarily out of stock
Better World
Siemens SENTRON 5SY7 MCB, 3P, 50A Curve B
  • RS stock no. 216-4342
  • Mfr. Part No. 5SY7350-6
Each
R 3,043.84(exc. VAT)
Temporarily out of stock
Better World
ABB SN201 MCB, 1P, 25A Curve D
  • RS stock no. 237-1424
  • Mfr. Part No. 2CSS255101R0251
Each
R 799.26(exc. VAT)
In Stock
Schneider Electric Acti9 1+N Phase Busbar, 230V ac, 9mm Pitch
  • RS stock no. 654-752
  • Mfr. Part No. A9XPC648
Each
R 2,848.78(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Acti 9 A9F9 MCB, 4P, 40A, Type Z, 400V AC, 250V DC, 20 kA, 15 kA Breaking Capacity
  • RS stock no. 211-2498
  • Mfr. Part No. A9F92440
Each
R 10,156.25(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Acti 9 A9N1 MCB, 4P, 100A Curve B
  • RS stock no. 219-8287
  • Mfr. Part No. A9N18436
Each
R 10,013.56(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 250 DC
  • RS stock no. 260-7838
  • Mfr. Part No. C253TM200D
Each
R 12,500.53(exc. VAT)
Temporarily out of stock
Siemens 350 → 415V ac Shunt Trip Shunt trip for use with 3RV2 Series Circuit Breakers
  • RS stock no. 706-1958
  • Mfr. Part No. 3RV2902-1DV0
Each
R 602.67(exc. VAT)
In Stock
Schneider Electric Resi9 Resi9 XE DM MCB, 1P, 20A Curve D, 230V AC, 3000 A Breaking Capacity
  • RS stock no. 287-6048
  • Mfr. Part No. R9EFD620
Each
R 353.47(exc. VAT)
In Stock
ETA REX12 Electronic Circuit breaker 6A 24V REX12D-T, DIN Rail Mount
  • RS stock no. 175-0380
  • Mfr. Part No. REX12D-TA2-100-DC24V-6A/6A
Each
R 1,167.60(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 2P 80A, Breaking Capacity 25 kA, Fixed Mount
  • RS stock no. 271-9409
  • Mfr. Part No. 3VA1180-3ED22-0AA0
Each
R 4,142.41(exc. VAT)
Temporarily out of stock
Schneider Electric, Compact MCCB 3P 800A, Breaking Capacity 100 kA
  • RS stock no. 340-924
  • Mfr. Part No. C080L3WM
Each
R 79,822.24(exc. VAT)
In Stock
ETA Thermal Circuit Breaker - 106-P30 Single Pole 250V Voltage Rating Panel Mount, 4A Current Rating
  • RS stock no. 335-974
  • Mfr. Part No. 106-P30-000040-4A
Each
R 368.86(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 80A Current Rating
  • RS stock no. 175-1513
  • Mfr. Part No. GV4P80N
Each
R 11,474.22(exc. VAT)
Temporarily out of stock
Hager Electronic Circuit Breaker 40A NSN, 3 channels
  • RS stock no. 251-2084
  • Mfr. Part No. NSN340
Each
R 7,870.62(exc. VAT)
In Stock
Lovato ModuLo P1MB MCB, 2P, 2A Curve B, 230V AC, 80V DC, 10 kA Breaking Capacity
  • RS stock no. 825-5661
  • Mfr. Part No. P1MB2PB02
Each
R 1,262.75(exc. VAT)
Temporarily out of stock
Better World
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P, Fixed Mount
  • RS stock no. 232-0273
  • Mfr. Part No. 1SDA068174R1 XT4S 250 BLOC FF
Each
R 8,718.35(exc. VAT)
In Stock
Phoenix Contact Surge Protector, 250V ac, DIN Rail Mount
  • RS stock no. 801-6270
  • Mfr. Part No. 2950077
Each
R 525.94(exc. VAT)
Temporarily out of stock
Better World
ABB, XT4S MCCB 4P 63A, Fixed Mount
  • RS stock no. 236-6774
  • Mfr. Part No. 1SDA068497R1 XT4S 160 Ekip I 63A FF
Each
R 22,677.82(exc. VAT)
In Stock
Better World
Siemens 5SV3 RCCB, 40A, 4 Pole, 30mA, Type A
  • RS stock no. 124-7733
  • Mfr. Part No. 5SV3344-6KL
Each
R 2,150.13(exc. VAT)
Temporarily out of stock
Schneider Electric MasterPacT Spare Parts for use with MasterPact NT/NW
  • RS stock no. 432-958
  • Mfr. Part No. 33035
Each
R 6,930.87(exc. VAT)
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