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

1945 of 999+
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 320A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 229-458
  • Mfr. Part No. 109681 NZMN3-S320
Each
R 39,221.32(exc. VAT)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 268-541
  • Mfr. Part No. 3VA6115-6HL31-2AA0
Each
R 23,080.49(exc. VAT)
Eaton PFR RCCB, 6A, 30mA, Type A, 250V ac
  • RS Stock No. 258-168
  • Mfr. Part No. 285556 PFR-03
Each
R 12,381.48(exc. VAT)
Schneider Electric iIDK RCD, 25A, 4 Pole, 300mA
  • RS Stock No. 776-9103
  • Mfr. Part No. A9R75425
Each
R 1,562.21(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 7.5 kA, Fixed Mount
  • RS Stock No. 255-577
  • Mfr. Part No. 265735 NZMN1-S100
Each
R 10,418.34(exc. VAT)
Legrand DX3 RCCB, 40A, 1+N Pole, 30mA, Type AC
  • RS Stock No. 732-0099
  • Mfr. Part No. 4 116 32
Each
R 2,812.76(exc. VAT)
Better World
Siemens SENTRON 5SL60 MCB, 1P + N, 25A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 328-379
  • Mfr. Part No. 5SL6025-7MF
Each
R 5,363.74(exc. VAT)
ABB System Pro M Compact S200M MCB, 4P, 1.6A Curve D, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 202-983
  • Mfr. Part No. 2CDS274001R0971
Each
R 4,020.26(exc. VAT)
Eaton AV/I44 Enclosure for use with AFDD, MCB, RCBO, RCD
  • RS Stock No. 248-373
  • Mfr. Part No. 062192 AV/I44-200
Each
R 8,128.80(exc. VAT)
Better World
ABB System Pro M Compact S200 MCB, 3P, 13A Curve D, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7891
  • Mfr. Part No. 2CDS253001R0131 S203-D13
Each
R 1,669.19(exc. VAT)
Better World
Schneider Electric RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Acti 9 Range
  • RS Stock No. 790-9301
  • Mfr. Part No. A9D19820
Each
R 4,507.06(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-248
  • Mfr. Part No. 3VA6440-7KT31-0AA0
Each
R 71,292.80(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - 229 3 Pole 480V ac Voltage Rating Panel Mount, 100A Current Rating
  • RS Stock No. 275-0075
  • Mfr. Part No. 229-3-1-61-5-9-100-V
Each
R 5,288.78(exc. VAT)
Siemens, SENTRON MCCB 3P 225A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 147-333
  • Mfr. Part No. 3VA5222-7EC31-1AA0
Each
R 26,433.08(exc. VAT)
Siemens SENTRON Cover for use with 3VA1 100/160
  • RS Stock No. 210-9297
  • Mfr. Part No. 3VA9153-0KB05
Each
R 569.67(exc. VAT)
Eaton Terminal Shield for use with Accessory Consideration, KLV Accessories, KLV Distribution Board, Spare Parts
  • RS Stock No. 248-835
  • Mfr. Part No. 186291 VS3-STEEL-KLV
Each
R 2,253.08(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 500A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 257-541
  • Mfr. Part No. 3VA5450-5EC41-0AA0
Each
R 46,670.28(exc. VAT)
Eaton xEffect FAZ MCB, 3P, 1A Curve B, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 259-017
  • Mfr. Part No. 278832 FAZ-B1/3
Each
R 3,047.79(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 55 kA
  • RS Stock No. 210-1659
  • Mfr. Part No. 3VA1140-5EF36-0AA0
Each
R 6,656.43(exc. VAT)
Phoenix Contact Thermal Circuit Breaker - TMC 1 Single Pole 65 V dc, 250V ac Voltage Rating DIN Rail Mount, 2A Current
  • RS Stock No. 801-6983
  • Mfr. Part No. 0914099
Each
R 2,297.79(exc. VAT)
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