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

180 of 999+
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 875A, Breaking Capacity 37 kA, Fixed Mount
  • RS Stock No. 255-596
  • Mfr. Part No. 265792 NZMH4-ME875
Each
TWD264,715.00(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 630A, Plug In
  • RS Stock No. 122-326
  • Mfr. Part No. LV563506P
Each
TWD37,977.00(exc. GST)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IULNK11 2 Pole Panel Mount, 25A Current Rating
  • RS Stock No. 275-0323
  • Mfr. Part No. IULNK11-1REC5-62-25.0-K-U
Each
TWD5,661.00(exc. GST)
Temporarily out of stock
ABB S802C MCB, 2P, 50A Curve B, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-519
  • Mfr. Part No. 2CCS882001R0505
Each
TWD11,133.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 80A, Fixed Mount
  • RS Stock No. 260-7595
  • Mfr. Part No. C11F3TM080B
Each
TWD22,040.00(exc. GST)
Temporarily out of stock
Eaton xE?ect - FRCmM-NA RCCB, 63A, 2 Pole, 30mA, 110/190V
  • RS Stock No. 121-165
  • Mfr. Part No. 167695 FRCMM-63/2/003-G/A-NA-110
Each
TWD10,724.00(exc. GST)
Temporarily out of stock
Eaton xEffect RCCB, 63A, 2 Pole, 100mA, Type F, 240V ac
  • RS Stock No. 248-937
  • Mfr. Part No. 187392 FRCMM-63/2/01-S/F
Each
TWD17,289.00(exc. GST)
In Stock
ABB High Performance S800N MCB, 3P, 63A Curve C, 400V AC, 36 kA Breaking Capacity
  • RS Stock No. 435-374
  • Mfr. Part No. 2CCS893001R0634 S803N-C63
Each
TWD7,340.00(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT NS630b...1600, ComPacT NS1600b...3200 Thermal Magnetic Release for use with Distribution
  • RS Stock No. 119-461
  • Mfr. Part No. C20FM
Each
TWD62,296.00(exc. GST)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0301
  • Mfr. Part No. 8GK1062-3KK21
Each
TWD31,761.00(exc. GST)
Temporarily out of stock
Schneider Electric, Canalis Series
  • RS Stock No. 358-392
  • Mfr. Part No. KHB0250SE5
Each
TWD446,696.00(exc. GST)
In Stock
Better World
Schneider Electric Mounting Plate for use with Compact Nsx 100/160/250
  • RS Stock No. 221-1178
  • Mfr. Part No. LV429283
Each
TWD4,730.00(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 4kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-3287
  • Mfr. Part No. 1SDA071197R1
Each
TWD865,392.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 5SY4 MCB, 3+N, 32A Curve B, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 212-9012
  • Mfr. Part No. 5SY4632-6
Each
TWD4,318.00(exc. GST)
Temporarily out of stock
Eaton xEffect xEffect - FAZ-T MCB, 1+N, 32A Curve B, 240V AC, 60V DC, 25 kA Breaking Capacity
  • RS Stock No. 129-396
  • Mfr. Part No. 142509 FAZT-B32/1N
Each
TWD3,172.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 40A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3354
  • Mfr. Part No. A9F54240
Each
TWD3,225.00(exc. GST)
Temporarily out of stock
ABB, Tmax MCCB 4P 1.25kA, Fixed Mount
  • RS Stock No. 237-6021
  • Mfr. Part No. 1SDA062880R1 T7S 1250A PR332-LSIRc FF
Each
TWD237,075.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-240
  • Mfr. Part No. 3VA6440-7JQ31-2AA0
Each
TWD215,711.00(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-738
  • Mfr. Part No. 3VA6210-8JP41-0AA0
Each
TWD162,070.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Busbar End Feed Unit, Canalis KN Series
  • RS Stock No. 211-0410
  • Mfr. Part No. KNA160AB4
Each
TWD14,641.00(exc. GST)
1
180
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