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

1754 of 999+
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 3P, 32A, Type Z, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 201-202
  • Mfr. Part No. 2CDS273001R0538
Each
TWD16,162.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Busbar
  • RS Stock No. 187-5182
  • Mfr. Part No. 5ST3657
Each
TWD40,599.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric iC60 RCD, 63A, 300mA
  • RS Stock No. 776-2890
  • Mfr. Part No. A9V04263
Each
TWD19,153.00(exc. GST)
Temporarily out of stock
Eaton Circuit Trip Circuit Trip for use with IZMX…
  • RS Stock No. 132-426
  • Mfr. Part No. 183982 IZMX-PXRV-T-1
Each
TWD110,377.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 500A 3VA2, 4 channels
  • RS Stock No. 156-636
  • Mfr. Part No. 3VA2450-8HK42-0AA0
Each
TWD202,289.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 5SY4 MCB, 2P, 13A Curve B, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 210-3400
  • Mfr. Part No. 5SY4213-6
Each
TWD2,654.00(exc. GST)
In Stock
Phoenix Contact Busbar
  • RS Stock No. 290-1258
  • Mfr. Part No. 0402174
Each
TWD773.00(exc. GST)
Temporarily out of stock
Hager HMB MCB, 4P, 125A, 400V AC, 15 Breaking Capacity
  • RS Stock No. 602-109
  • Mfr. Part No. HMB499
Each
TWD55,038.00(exc. GST)
Temporarily out of stock
Phoenix Contact Surge Protector, 10kA, DIN Rail Mount
  • RS Stock No. 207-2675
  • Mfr. Part No. 1065320
Each
TWD5,229.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 255-608
  • Mfr. Part No. 265867 NZMN2-4-A250/160
Each
TWD70,844.00(exc. GST)
Temporarily out of stock
xEffect MCB, 3P, 80A Curve C, 400V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 252-932
  • Mfr. Part No. 211803 AZ-3N-C80
Each
TWD20,077.00(exc. GST)
Temporarily out of stock
Siemens ALPHA Assembly Kit for use with Modular Installation Devices
  • RS Stock No. 269-8400
  • Mfr. Part No. 8GK4001-6KK11
Each
TWD8,151.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 125A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-527
  • Mfr. Part No. 3VA5112-4EC41-0AA0
Each
TWD46,038.00(exc. GST)
Temporarily out of stock
ABB SMISSLINE TP MCB, 2P, 8A Curve B, 230V AC
  • RS Stock No. 246-2525
  • Mfr. Part No. 2CCS571103R8085
Each
TWD4,027.00(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 25A Curve D, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7876
  • Mfr. Part No. 2CDS252001R0251 S202-D25
Each
TWD1,621.00(exc. GST)
Temporarily out of stock
HENSEL ENYSTAR Distribution Board, 16 Way, 63 A
  • RS Stock No. 117-269
  • Mfr. Part No. FP VN 1600 GB
Each
TWD82,804.00(exc. GST)
In Stock
ABB High Performance S800N MCB, 1P, 100A Curve B, 400V AC, 36 kA Breaking Capacity
  • RS Stock No. 435-352
  • Mfr. Part No. 2CCG001215R0001
Each
TWD3,734.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 630A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 239-812
  • Mfr. Part No. 191589 NZMN3-VX630-BT
Each
TWD121,649.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 400A, Fixed Mount
  • RS Stock No. 260-8128
  • Mfr. Part No. C40N4
Each
TWD108,414.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 1.25kA, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 270-4878
  • Mfr. Part No. 3VA2612-5HN42-0AA0
Each
TWD648,268.00(exc. GST)
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