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

31 of 999+
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA1
  • RS Stock No. 269-7065
  • Mfr. Part No. 3VA9113-0JG11
Each (In a Pack of 3)
TWD594.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Connection Unit for use with Circuit Breaker Busbar
  • RS Stock No. 269-8417
  • Mfr. Part No. 8US1600-0RF02
Each (In a Pack of 12)
TWD519.50(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 2 5700 Single Pole 250V Voltage Rating Panel Mount, 10A Current Rating
  • RS Stock No. 729-2758
  • Mfr. Part No. 2-5700-IG2-P10-DD-000040-10A
Each
TWD730.00(exc. GST)
Limited stock
ETA Thermal Circuit Breaker - 1658 Single Pole 250V Voltage Rating Panel Mount, 6A Current Rating
  • RS Stock No. 344-5327
  • Mfr. Part No. 1658-G21-02-P10-6A
Each
TWD160.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9554
  • Mfr. Part No. 3VA10103ED360AA0
Each
TWD17,894.00(exc. GST)
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
TWD20,098.00(exc. GST)
In Stock
Weidmuller Single Phase Surge Protector, 16A, DIN Rail Mount
  • RS Stock No. 249-3333
  • Mfr. Part No. 1351580000
Each
TWD4,090.00(exc. GST)
Temporarily out of stock
Siemens ALPHA Cover
  • RS Stock No. 627-036
  • Mfr. Part No. 8GK9601-1KK21
1 Pack of 10
TWD9,247.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 350A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 257-323
  • Mfr. Part No. 3VA5335-7EF41-2AA0
Each
TWD147,932.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4526
  • Mfr. Part No. 3VA2125-6HK36-0AA0
Each
TWD34,012.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 1P 80A, Breaking Capacity 18 kA, Fixed Mount
  • RS Stock No. 147-574
  • Mfr. Part No. 3VA5180-6ED11-1AA0
Each
TWD10,652.00(exc. GST)
Temporarily out of stock
Siemens ALPHA Terminal for use with 12 x 5 Conductor Connection
  • RS Stock No. 627-124
  • Mfr. Part No. 8JH4104
1 Pack of 10
TWD2,131.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 63A, Breaking Capacity 55 kA, DIN Rail Mount
  • RS Stock No. 271-9395
  • Mfr. Part No. 3VA1163-5ED46-0AA0
Each
TWD21,830.00(exc. GST)
Temporarily out of stock
Hager Hager NKN Circuit Breaker, 2P, 10A Curve C, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 599-793
  • Mfr. Part No. NKN210
Each
TWD5,229.00(exc. GST)
In Stock
Eaton xPole MCB, 2P, 20A Curve C, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 864-4361
  • Mfr. Part No. 242406 PLSM-C20/2-MW
Each
TWD2,523.00(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 C60BP MCB, 3P, 6A Curve D, 440V AC, 15 kA Breaking Capacity
  • RS Stock No. 211-2454
  • Mfr. Part No. M9F43306
Each
TWD10,993.00(exc. GST)
Temporarily out of stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 3 kA, Fixed Mount
  • RS Stock No. 231-9295
  • Mfr. Part No. 1SDA066809R1 XT1B 160 TMD 160A FF
Each
TWD13,452.00(exc. GST)
Temporarily out of stock
Eaton xEnergy Main Distribution Board
  • RS Stock No. 258-217
  • Mfr. Part No. 289174 XPNBCB0402
Each
TWD2,900.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 2P 400A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 257-229
  • Mfr. Part No. 3VA5340-5EC61-0AA0
Each
TWD66,591.00(exc. GST)
Temporarily out of stock
Eaton xEffect RCCB, 40A, 4 Pole, 100mA, Type F, 240V ac
  • RS Stock No. 242-946
  • Mfr. Part No. 187415 FRCMM-40/4/01-G/F
Each
TWD10,840.00(exc. GST)
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