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

285 of 999+
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 20A Curve B, 400V AC, 110V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7564
  • Mfr. Part No. 2CDS252001R0205 S202-B20
Each
TWD1,721.00(exc. GST)
Temporarily out of stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 630A, Fixed Mount
  • RS Stock No. 232-0091
  • Mfr. Part No. 1SDA054405R1 T5S630 FF PR221-I 630A
Each
TWD86,553.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Compact Nsx Mounting Base for use with Compact Nsx 400/630
  • RS Stock No. 221-1241
  • Mfr. Part No. LV432516
Each
TWD24,285.00(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)
In Stock
Better World
Schneider Electric Acti 9 3 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2742
  • Mfr. Part No. A9XPH412
Each
TWD1,209.00(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 1P, 500mA, Type Z, 240V AC, 72V DC, 100 kA Breaking Capacity
  • RS Stock No. 201-286
  • Mfr. Part No. 2CDS381001R0158
Each
TWD5,170.00(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
Hager BDF Series RCCB, 63A, 2 Pole, 30mA, Type F
  • RS Stock No. 597-898
  • Mfr. Part No. BDF263
Each
TWD30,040.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 Acti9 iDT40T MCB, 1+N, 16A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 191-6089
  • Mfr. Part No. A9P22616
Each
TWD1,050.00(exc. GST)
In Stock
Better World
Schneider Electric, Power Tag, 2mA, POWERTAG, 2W, Wireless
  • RS Stock No. 248-3709
  • Mfr. Part No. A9XMC1D3
Each
TWD4,248.00(exc. GST)
In Stock
Europa EUC3P EUC MCB, 3P, 6A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6588
  • Mfr. Part No. EUC3P6C
Each
TWD724.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 90A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 268-028
  • Mfr. Part No. 3VA5290-7ED41-2AA0
Each
TWD59,004.00(exc. GST)
Temporarily out of stock
ABB, Tmax XT MCCB 3P 8A, Fixed Mount
  • RS Stock No. 237-6209
  • Mfr. Part No. 1SDA067007R1 XT2N 160 TMD 8A FF
Each
TWD11,875.00(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1+N, 10A Curve C, 253V AC, 72V DC, 20 kA Breaking Capacity
  • RS Stock No. 231-9674
  • Mfr. Part No. 2CDS251103R0104 S201-C 10
1 Box of 1
TWD1,504.00(exc. GST)
Temporarily out of stock
Better World
Siemens RCBO, 100A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type D, Sentron Range
  • RS Stock No. 243-6225
  • Mfr. Part No. 5SU1374-8DK81
Each
TWD185,877.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 80A, Breaking Capacity 4 kA, Fixed Mount
  • RS Stock No. 259-916
  • Mfr. Part No. 271406 NZMC1-S80
Each
TWD15,211.00(exc. GST)
Temporarily out of stock
ABB Tmax XT Undervoltage Release for use with Circuit Breaker
  • RS Stock No. 231-9366
  • Mfr. Part No. 1SDA104958R1 YU-C XT5-XT6 F/P 220.240Va
Each
TWD6,140.00(exc. GST)
In Stock
Better World
Schneider Electric iC60 RCD, 25A, 2 Pole, 30mA, Type AC, 230 → 240V ac
  • RS Stock No. 734-9071
  • Mfr. Part No. A9Q11225
Each
TWD9,804.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 250A, Fixed Mount
  • RS Stock No. 260-7993
  • Mfr. Part No. C25S3D
Each
TWD46,101.00(exc. GST)
In Stock
Siemens N 120 Power Supply, 29V dc dc Input, 640mA Output
  • RS Stock No. 287-8577
  • Mfr. Part No. N 120/02 / 5WG1120-1AB02
Each
TWD3,605.00(exc. GST)
1
285
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