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

89 of 999+
Temporarily out of stock
Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 630A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 256-081
  • Mfr. Part No. 265894 NZMN3-4-AE630
Each
TWD139,925.00(exc. GST)
Temporarily out of stock
Schneider Electric Flexible Element, 2m, 40A, Canalis Series
  • RS Stock No. 207-227
  • Mfr. Part No. KBB40DF420W
Each
TWD13,044.00(exc. GST)
Temporarily out of stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 800A, Fixed Mount
  • RS Stock No. 232-0134
  • Mfr. Part No. 1SDA060268R1 T6N800 FF PR221-LS/I 800A
Each
TWD95,139.00(exc. GST)
Temporarily out of stock
Siemens 400V (Volts) Remote Switch Circuit Trip for use with Remote Control Switch
  • RS Stock No. 613-321
  • Mfr. Part No. 5TT4112-1
Each
TWD1,958.00(exc. GST)
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 3+N, 1A Curve K
  • RS Stock No. 237-3273
  • Mfr. Part No. 2CDS253103R0217
Each
TWD7,122.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 20A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-224
  • Mfr. Part No. 3VA5120-5ED21-0AA0
Each
TWD14,578.00(exc. GST)
Temporarily out of stock
Eaton MSC-DE Electronic Circuit Breaker 16.7A 24V MSC-DEA, DIN Rail
  • RS Stock No. 120-913
  • Mfr. Part No. 167824 MSC-DEA-12-M17-SP(24VDC)
Each
TWD15,018.00(exc. GST)
In Stock
Siemens SIRIUS Cable Connector for use with Motor Circuit Breaker
  • RS Stock No. 155-239
  • Mfr. Part No. 3RV1927-5AA00
Each
TWD216.00(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 2P, 5A Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-358
  • Mfr. Part No. 2CDS272061R0357
Each
TWD9,185.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 80A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS Stock No. 257-763
  • Mfr. Part No. 272256 NZMB1-A80-NA
Each
TWD18,429.00(exc. GST)
Temporarily out of stock
Lovato RCBO, 10A Current Rating, 1P + N Poles, 30mA Trip Sensitivity, Type A, P1RE1NC Range
  • RS Stock No. 276-5676
  • Mfr. Part No. P1RE1NC10A030
Each
TWD5,463.00(exc. GST)
Temporarily out of stock
Eaton IZMX/INX Terminal Kit for use with INX163 Series, IZMX163 Series
  • RS Stock No. 132-421
  • Mfr. Part No. 183970 IZMX-THV163-1
Each
TWD13,787.00(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 15A Curve C, 277V AC
  • RS Stock No. 256-6800
  • Mfr. Part No. M9F52215
Each
TWD8,679.00(exc. GST)
Temporarily out of stock
Eaton PKE Trip Block Electronic Circuit Breaker 160A , 4 channels , Fixed
  • RS Stock No. 121-805
  • Mfr. Part No. 147393 NZMN2-4-A160-BT
Each
TWD57,035.00(exc. GST)
In Stock
Schurter Thermal Circuit Breaker - ABD 125/250V Voltage Rating Snap In, 20A Current Rating
  • RS Stock No. 868-9175
  • Mfr. Part No. 4430.2196
Each
TWD882.00(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 4P, 32A Curve D, 277V AC
  • RS Stock No. 256-6777
  • Mfr. Part No. M9F23432
Each
TWD13,575.00(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 4P, 32A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 746-7817
  • Mfr. Part No. 2CDS254001R0324 S204-C32
Each
TWD5,501.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Linergy Busbar, 690V
  • RS Stock No. 211-2318
  • Mfr. Part No. LA9ZX01244
Each (In a Pack of 10)
TWD2,443.00(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 8340 Single Pole 80V dc Voltage Rating Flange Mount, 2.5A Current Rating
  • RS Stock No. 407-0750
  • Mfr. Part No. 8340-F410-P1M1-A3H0-2.5A
Each
TWD3,119.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5212
  • Mfr. Part No. 3VA2340-6HN32-0AA0
Each
TWD93,034.00(exc. GST)
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