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

219 of 999+
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 63A Curve D, 100 → 133V AC, 72V DC, 15 kA Breaking Capacity
  • RS Stock No. 791-3495
  • Mfr. Part No. A9F55163
Each
TWD1,872.00(exc. GST)
Temporarily out of stock
ABB SU200 M MCB, 2P, 25A Curve C, 440V AC, 96V DC, 15 kA Breaking Capacity
  • RS Stock No. 203-863
  • Mfr. Part No. 2CDS272337R0254
Each
TWD8,603.00(exc. GST)
Temporarily out of stock
Schneider Electric MASTERPACT NW MCB, 3P, 2.5kA
  • RS Stock No. 247-1895
  • Mfr. Part No. 48300
Each
TWD713,668.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 140A, Breaking Capacity 6 kA, Plug In
  • RS Stock No. 243-053
  • Mfr. Part No. 191657 NZMS2-MX140-SVE
Each
TWD55,709.00(exc. GST)
In Stock
Okaya Electric Industries 3 Phase Surge Protector, 5kA, Surface Mount Mount
  • RS Stock No. 190-2018
  • Mfr. Part No. LV480DI-U4
Each
TWD1,777.00(exc. GST)
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 500mA Curve C
  • RS Stock No. 237-3312
  • Mfr. Part No. 2CDS253103R0984
Each
TWD4,730.00(exc. GST)
Temporarily out of stock
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)
Temporarily out of stock
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)
Temporarily out of stock
Better World
Siemens RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 225-8754
  • Mfr. Part No. 5SU1354-7GV16
Each (In a Pack of 36)
TWD7,024.40(exc. GST)
In Stock
Hager NEN MCB, 4P, 50A Curve B, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4704
  • Mfr. Part No. NEN450
Each
TWD19,499.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 16A, Fixed Mount
  • RS Stock No. 260-7614
  • Mfr. Part No. C11H3TM016B
Each
TWD26,559.00(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 20A Curve D, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 527-9481
  • Mfr. Part No. 2CDS251001R0201 S201-D20
Each
TWD618.00(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 C60BP MCB, 2P, 4A Curve D, 440V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 211-2445
  • Mfr. Part No. M9F43204
Each
TWD5,937.00(exc. GST)
Temporarily out of stock
Eaton Single Phase Surge Protector, 12.5kA, 1.5kV, DIN Rail Mount
  • RS Stock No. 120-844
  • Mfr. Part No. 158334 SPBT12-280-1+NPE-AX
Each
TWD27,902.00(exc. GST)
Temporarily out of stock
Siemens SENTRON 3 Phase Busbar
  • RS Stock No. 226-0808
  • Mfr. Part No. 5SH5320
Each
TWD8,145.00(exc. GST)
In Stock
Siemens 230V ac Control Station Switch
  • RS Stock No. 622-0682
  • Mfr. Part No. 5TT4105-0
Each
TWD2,762.00(exc. GST)
Temporarily out of stock
Schneider Electric A9R RCCB, 100A, 2 Pole, 240V
  • RS Stock No. 207-174
  • Mfr. Part No. A9R25291
Each
TWD20,920.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-4704
  • Mfr. Part No. 1SDA072982R1
Each
TWD382,449.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 630A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 341-265
  • Mfr. Part No. C063N35AFM
Each
TWD340,788.00(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 500mA, Type Z
  • RS Stock No. 237-3182
  • Mfr. Part No. 2CDS251001R0158 S201 Z 0.5A - 10 KA
Each
TWD1,587.00(exc. GST)
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