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

216 of 999+
In Stock
Schurter Thermal Circuit Breaker - T11 Single Pole 240V ac Voltage Rating, 16A Current Rating
  • RS Stock No. 284-5906
  • Mfr. Part No. 4400.0017
Each
TWD326.00(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 2P, 2A Curve B, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-308
  • Mfr. Part No. 5SY4202-6
Each
TWD2,639.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 1kA, Breaking Capacity 31 kA, Fixed Mount
  • RS Stock No. 346-733
  • Mfr. Part No. C100H32EFM
Each
TWD472,062.00(exc. GST)
In Stock
Better World
Siemens Surge Protector, Clip-On Mount
  • RS Stock No. 203-2644
  • Mfr. Part No. 3RT2936-1BD00
Each
TWD672.00(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SJ4101 MCB, 1P, 1A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 299-716
  • Mfr. Part No. 5SJ4101-8HG42
Each
TWD2,479.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 32A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9903
  • Mfr. Part No. 3VA1132-6ED46-0AA0
Each
TWD18,160.00(exc. GST)
In Stock
Schneider Electric Acti9 A9F MCB, 2P, 63A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 288-7098
  • Mfr. Part No. A9F94263
Each
TWD15,317.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 150A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 231-328
  • Mfr. Part No. 113006 NZMN2-4-AF150-BT-NA
Each
TWD68,736.00(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3P, 25A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 243-551
  • Mfr. Part No. 102312 FAZ-D25/3-RT
Each
TWD9,234.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Horizontal Distribution Busbar Trunking, 5m, 100A, Canalis KS Series
  • RS Stock No. 211-0453
  • Mfr. Part No. KSA100ED45020
Each
TWD25,932.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 IC60L MCB, 3P, 0.5A Curve C, 400V AC, 180V DC, 20 kA, 15 kA Breaking Capacity
  • RS Stock No. 212-0137
  • Mfr. Part No. A9F94370
Each
TWD8,247.00(exc. GST)
Temporarily out of stock
Schneider Electric Canalis White Busbar Trunking, W113 mm x, L3m, Aluminium
  • RS Stock No. 276-9238
  • Mfr. Part No. KSA800ED43010
Each
TWD140,923.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 4P, 40A Curve D, 277V AC
  • RS Stock No. 256-6778
  • Mfr. Part No. M9F23440
Each
TWD14,163.00(exc. GST)
Temporarily out of stock
SENTRON Connection Unit for use with 3VA41 Three 1 Pole 3VA Breakers
  • RS Stock No. 263-887
  • Mfr. Part No. 3VA9033-0LB20
Each
TWD2,073.00(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 3 channels
  • RS Stock No. 259-9905
  • Mfr. Part No. 1SDA070751R1
Each
TWD170,429.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Interlock Kit for use with 3VA12
  • RS Stock No. 152-781
  • Mfr. Part No. 3VA9257-0VF10
Each
TWD3,516.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3791
  • Mfr. Part No. 3VA2163-5HL46-0AA0
Each
TWD34,965.00(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-397
  • Mfr. Part No. 3VA6140-8HL41-2AA0
Each
TWD57,855.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 50A, Breaking Capacity 6 kA, Fixed Mount
  • RS Stock No. 259-065
  • Mfr. Part No. 271393 NZMC1-A50
Each
TWD13,448.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 25A, Fixed Mount
  • RS Stock No. 254-6273
  • Mfr. Part No. C103TM025
Each
TWD8,672.00(exc. GST)
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