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

110 of 999+
In Stock
Siemens SENTRON 5SJ4 MCB, 1P, 6A Curve C, 14 kA Breaking Capacity
  • RS Stock No. 202-7207
  • Mfr. Part No. 5SJ4106-7HG40
Each
TWD2,173.00(exc. GST)
In Stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-134
  • Mfr. Part No. KV 9106
Each
TWD1,652.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 iC60H MCB, 4P, 25A Curve B, 440V AC, 220 → 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3262
  • Mfr. Part No. A9F53425
Each
TWD6,511.00(exc. GST)
Temporarily out of stock
Hager MMN MCB, 2P, 20A, 415V AC, 20 kA Breaking Capacity
  • RS Stock No. 597-994
  • Mfr. Part No. MMN220
Each
TWD11,340.00(exc. GST)
In Stock
Schneider Electric Acti 9 MCB, 3P, 16A Curve C, 230V AC, 7.5 kA Breaking Capacity
  • RS Stock No. 200-6158
  • Mfr. Part No. A9PA2716
Each
TWD5,627.00(exc. GST)
Temporarily out of stock
ABB, T7S MCCB 3P 1.6kA, Fixed Mount
  • RS Stock No. 237-6025
  • Mfr. Part No. 1SDA063010R1 T7S-M 1600A PR231-LS/I FF
Each
TWD222,066.00(exc. GST)
In Stock
Siemens SENTRON 5SJ MCB, 2P, 4A
  • RS Stock No. 232-2249
  • Mfr. Part No. 5SJ4204-7HG41
Each
TWD5,093.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 3VA1 MCB, 3P, 32A
  • RS Stock No. 224-7847
  • Mfr. Part No. 3VA1132-5MH36-0AA0
Each
TWD17,861.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 3VA1 MCB, 2P, 25A
  • RS Stock No. 224-7830
  • Mfr. Part No. 3VA1125-3ED26-0AA0
Each
TWD12,467.00(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)
In Stock
Schneider Electric RCBO, 6A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Resi9 Range
  • RS Stock No. 335-282
  • Mfr. Part No. R9D87806
Each
TWD1,788.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 16A Curve C, 100 → 130V AC, 12 → 144V DC, 6 kA Breaking Capacity
  • RS Stock No. 734-9065
  • Mfr. Part No. A9F77216
Each
TWD2,622.00(exc. GST)
Temporarily out of stock
Better World
Siemens RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 151-1218
  • Mfr. Part No. 5SU1356-7KK40
Each
TWD5,524.00(exc. GST)
Temporarily out of stock
Hager Hager NSN Circuit Breaker, 4P, 10A Curve D, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 599-723
  • Mfr. Part No. NSN410
Each
TWD15,216.00(exc. GST)
In Stock
TE Connectivity Thermal Circuit Breaker - W28 Single Pole 32 V dc, 250V ac Voltage Rating, 7A Current Rating
  • RS Stock No. 782-0921
  • Mfr. Part No. W28-XQ1A-7
Each
TWD120.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 2P, 25A Curve C, 15 kA Breaking Capacity
  • RS Stock No. 219-9278
  • Mfr. Part No. A9F94225
Each
TWD6,127.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Multi 9 C60BP MCB, 3P, 4A Curve D, 440V AC, 15 kA Breaking Capacity
  • RS Stock No. 211-2452
  • Mfr. Part No. M9F43304
Each
TWD12,712.00(exc. GST)
In Stock
Better World
Siemens 5SV4312 RCCB, 25A, 2 Pole, 30mA, Type AC, 230V ac
  • RS Stock No. 231-8387
  • Mfr. Part No. 5SV4312-0
Each
TWD5,968.00(exc. GST)
Temporarily out of stock
Hager HMB MCB, 3P, 100A, 400V AC, 15 Breaking Capacity
  • RS Stock No. 602-106
  • Mfr. Part No. HMB390
Each
TWD32,898.00(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 M9F4 MCB, 1P, 5A, Type Z, 415V AC, 60V DC, 20 kA, 3 kA Breaking Capacity
  • RS Stock No. 211-2675
  • Mfr. Part No. M9F44105
Each
TWD1,823.00(exc. GST)
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