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

35874 Products showing for Circuit Breakers

39 of 999+
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-628
  • Mfr. Part No. 3VA5140-5EC31-1AA0
Each
TWD16,745.00(exc. VAT)
Siemens SENTRON Wire Connector for use with 3VA1 250
  • RS Stock No. 210-9323
  • Mfr. Part No. 3VA9213-0JJ13
Each
TWD4,763.00(exc. VAT)
Better World
ABB System Pro M Compact S200 MCB, 3P, 63A Curve K, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 746-8043
  • Mfr. Part No. 2CDS253001R0607 S203-K63
Each
TWD4,813.00(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 14 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-612
  • Mfr. Part No. 3VA5140-4EC31-1AA0
Each
TWD16,745.00(exc. VAT)
Schneider Electric Acti9 SE10 MCB Mini Circuit Breaker, 1P, 40A Curve C, 415V AC, 10000 A Breaking Capacity
  • RS Stock No. 335-290
  • Mfr. Part No. SE10C140
Each
TWD1,151.00(exc. VAT)
ETA Thermal Circuit Breaker - 1616 Single Pole 32V Voltage Rating, 15A Current Rating
  • RS Stock No. 729-2732
  • Mfr. Part No. 1616-21-15A
Each
TWD1,082.00(exc. VAT)
ETA Thermal Circuit Breaker - 4130 Single Pole 240V Voltage Rating Panel Mount, 35A Current Rating
  • RS Stock No. 405-9214
  • Mfr. Part No. 4130-G211-K4M1-35A
Each
TWD2,633.00(exc. VAT)
Schurter Thermal Circuit Breaker - TA45 2 Pole 60 V dc, 240V ac Voltage Rating Panel Mount, 6A Current Rating
  • RS Stock No. 868-9106
  • Mfr. Part No. 4430.0990
Each
TWD865.00(exc. VAT)
Schneider Electric Thermal Circuit Breaker - GB2 1P + N Pole 250V ac Voltage Rating DIN Rail Mount, 10A Current Rating
  • RS Stock No. 610-0910
  • Mfr. Part No. GB2CD16
Each
TWD1,279.00(exc. VAT)
Siemens, SENTRON MCCB 2P 110A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-255
  • Mfr. Part No. 3VA5211-7ED61-0AA0
Each
TWD52,357.00(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 32A, Breaking Capacity 36 kA
  • RS Stock No. 209-6987
  • Mfr. Part No. 3VA1132-4EE46-0AA0
Each
TWD20,359.00(exc. VAT)
ETA Thermal Circuit Breaker - 1658 Single Pole 250V Voltage Rating Panel Mount, 10A Current Rating
  • RS Stock No. 273-0860
  • Mfr. Part No. 1658-G21-02-P10-10A
Each
TWD208.00(exc. VAT)
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V Voltage Rating DIN Rail Mount, 40A Current
  • RS Stock No. 272-836
  • Mfr. Part No. GV3L40
Each
TWD8,461.00(exc. VAT)
ETA Thermal Magnetic Circuit Breaker - 201 Single Pole, 5A Current Rating
  • RS Stock No. 333-265
  • Mfr. Part No. 201-5A
Each
TWD1,196.00(exc. VAT)
Better World
Schneider Electric Busbar Tap-Off Unit
  • RS Stock No. 219-8901
  • Mfr. Part No. KNB32CP
Each
TWD8,774.00(exc. VAT)
Phoenix Contact 3 Phase Surge Protector, ≤1.5kV, DIN Rail Mount
  • RS Stock No. 890-3705
  • Mfr. Part No. 2905871
Each
TWD40,045.00(exc. VAT)
Siemens, SENTRON MCCB 3P 175A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-991
  • Mfr. Part No. 3VA5217-5EC31-2AA0
Each
TWD61,384.00(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3957
  • Mfr. Part No. 3VA2110-6JP32-0AA0
Each
TWD61,919.00(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 40A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-390
  • Mfr. Part No. 3VA5140-6ED11-1AA0
Each
TWD9,840.00(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3888
  • Mfr. Part No. 3VA2063-8HL36-0AA0
Each
TWD40,184.00(exc. VAT)
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