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

193 of 999+
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 257-295
  • Mfr. Part No. 3VA5340-6EF31-2AA0
Each
TWD95,020.00(exc. GST)
Better World
Siemens SENTRON 5SY6 MCB, 3+N, 63A Curve C, 400V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 209-6033
  • Mfr. Part No. 5SY6663-7
Each
TWD13,430.00(exc. GST)
ABB Emax2 Electronic Circuit Breaker 5kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-3351
  • Mfr. Part No. 1SDA071267R1
Each
TWD1,461,839.00(exc. GST)
Eaton xEnergy Safety Ci Distribution Board Enclosure, 1 Way, 250 A
  • RS Stock No. 251-464
  • Mfr. Part No. 194577 CI44-S60-250/3-1XNH1
Each
TWD26,744.00(exc. GST)
Schneider Electric Cross Elbow Busbar Trunking, 290 → 1200mm, 630A, Canalis Series
  • RS Stock No. 335-119
  • Mfr. Part No. KSA630DMCK43F
Each
TWD126,125.00(exc. GST)
Better World
Siemens Sentron 5SY6 MCB, 1P, 1A Curve C, 230V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 521-4917
  • Mfr. Part No. 5SY6101-7
Each
TWD825.00(exc. GST)
ETA Thermal Circuit Breaker - 1658 Single Pole 250V Voltage Rating Panel Mount, 5A Current Rating
  • RS Stock No. 273-0854
  • Mfr. Part No. 1658-G21-02-P10-5A
Each
TWD223.00(exc. GST)
Eaton RCBO, 16A Current Rating, 1+N Poles, 300mA Trip Sensitivity, Type C, xEffect Range
  • RS Stock No. 252-278
  • Mfr. Part No. 193498 FRBmM-C16/1N/03-F
Each
TWD8,276.00(exc. GST)
ABB RCBO, 10A Current Rating, 4P Poles, Type B
  • RS Stock No. 237-5206
  • Mfr. Part No. 2CSR274101R1105
Each
TWD14,672.00(exc. GST)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-532
  • Mfr. Part No. 3VA6140-8JQ31-0AA0
Each
TWD91,572.00(exc. GST)
WEG EC-R2 Busbar for use with CWB40, CWB50, CWB66, CWB80
  • RS Stock No. 201-3476
  • Mfr. Part No. EC-R2
Each
TWD1,351.00(exc. GST)
Better World
Schneider Electric Acti 9 A9F9 MCB, 1P, 1A, Type Z, 230V AC, 72V DC, 20 kA, 15 kA Breaking Capacity
  • RS Stock No. 211-2482
  • Mfr. Part No. A9F92101
Each
TWD1,909.00(exc. GST)
Siemens, SENTRON MCCB 4P 80A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-583
  • Mfr. Part No. 3VA5180-6EF41-0AA0
Each
TWD30,737.00(exc. GST)
Siemens, SENTRON MCCB 4P 250A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-849
  • Mfr. Part No. 3VA5225-6GD41-0AA0
Each
TWD97,041.00(exc. GST)
Better World
Siemens RCBO, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, SENTRON Range
  • RS Stock No. 211-9600
  • Mfr. Part No. 5SU1354-3KK10
Each
TWD8,211.00(exc. GST)
Schneider Electric 690V ac Circuit Trip Circuit Trip for use with Circuit Breaker
  • RS Stock No. 205-213
  • Mfr. Part No. C106TM080
Each
TWD19,775.00(exc. GST)
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0329
  • Mfr. Part No. 8GK1082-3KK21
Each
TWD31,989.00(exc. GST)
ABB MCCB Molded Case Circuit Breaker 3P+N 320A, Fixed Mount
  • RS Stock No. 250-4170
  • Mfr. Part No. 1SDA054442R1
Each
TWD176,287.00(exc. GST)
Schneider Electric PowerPact Thermal Magnetic Circuit Breaker - PowerPacT 3 Pole 525V Voltage Rating Clip-On, 90A
  • RS Stock No. 357-742
  • Mfr. Part No. BGL36090LU
Each
TWD42,420.00(exc. GST)
Eaton xEffect FAZ MCB, 3+N, 12A Curve B, 440V AC, 60V DC, 7.5 kA Breaking Capacity
  • RS Stock No. 254-196
  • Mfr. Part No. 241090 FAZT-B12/3N
Each
TWD7,969.00(exc. GST)
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