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

69 of 999+
Better World
Schneider Electric Busbar Feed Unit, Canalis KS Series
  • RS Stock No. 211-0477
  • Mfr. Part No. KSA630AE4
Each
TWD32,885.00(exc. GST)
Phoenix Contact CAPAROC Electronic Circuit Breaker 4A, 2 channels
  • RS Stock No. 265-8974
  • Mfr. Part No. 1115655
Each
TWD3,293.00(exc. GST)
Better World
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 3 channels
  • RS Stock No. 259-9929
  • Mfr. Part No. 1SDA070790R1
Each
TWD296,433.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 200A, Breaking Capacity 4 kA, Fixed Mount
  • RS Stock No. 259-920
  • Mfr. Part No. 271426 NZMC2-M200
Each
TWD47,472.00(exc. GST)
Better World
Schneider Electric Acti 9 iC60H MCB, 4P, 2A Curve C, 440V AC, 220 → 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3411
  • Mfr. Part No. A9F54402
Each
TWD7,970.00(exc. GST)
Better World
Schneider Electric Straight Busbar Trunking, 2m, 40A, KBA Series
  • RS Stock No. 219-8855
  • Mfr. Part No. KBA40ED4203W
Each (In a Pack of 6)
TWD6,395.30(exc. GST)
SENTRON Wire Connector for use with 3VA61/62 Series
  • RS Stock No. 263-968
  • Mfr. Part No. 3VA9144-0JK11
1 Kit
TWD7,893.00(exc. GST)
Eaton xEffect MCB, 2P, 4A Curve B, 240 → 415V AC, 96V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-7201
  • Mfr. Part No. 279275 FAZ-B4/2-HS
Each
TWD3,960.00(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 55 kA
  • RS Stock No. 209-7073
  • Mfr. Part No. 3VA2225-5HM32-0AA0
Each
TWD67,837.00(exc. GST)
ABB S402M MCB, 2P, 20A Curve K, 440V AC, 12V DC, 15 kA Breaking Capacity
  • RS Stock No. 140-466
  • Mfr. Part No. 2CCS572001R0487
Each
TWD9,821.00(exc. GST)
Siemens, SENTRON MCCB 4P 90A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-751
  • Mfr. Part No. 3VA5190-6GD41-0AA0
Each
TWD25,999.00(exc. GST)
Better World
ABB System Pro M Compact S200M MCB, 4P, 16A Curve B, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 746-8084
  • Mfr. Part No. 2CDS274001R0165 S204M-B16
Each
TWD4,562.00(exc. GST)
Europa EUC1P EUC MCB, 1P, 20A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6516
  • Mfr. Part No. EUC1P20C
Each
TWD404.00(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3656
  • Mfr. Part No. 3VA2025-6JQ32-0AA0
Each
TWD144,335.00(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 50A, Breaking Capacity 65 kA
  • RS Stock No. 209-7086
  • Mfr. Part No. 3VA5150-6EC31-0AA0
Each
TWD27,918.00(exc. GST)
Schurter TA36 Rocker Circuit Breaker - TA36 Single Pole 32 V dc, 277 V ac Voltage Rating, 6A Current Rating
  • RS Stock No. 221-5584
  • Mfr. Part No. 3-128-199
1 Box of 50
TWD17,136.00(exc. GST)
Eaton Eaton xComfort Installaton Accessory for use with Basic Device, Installation Distribution Boards, KLV for Projects
  • RS Stock No. 124-958
  • Mfr. Part No. 178873 KLV-4HWP-4PR
Each
TWD5,703.00(exc. GST)
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 10A Curve C, 400V AC, 12 → 144V DC, 6 kA Breaking Capacity
  • RS Stock No. 734-9068
  • Mfr. Part No. A9F77210
Each
TWD2,749.00(exc. GST)
Siemens Sentron Contactor Interface Module
  • RS Stock No. 196-3596
  • Mfr. Part No. 5SM2322-0
Each
TWD2,002.00(exc. GST)
ABB Emax2 Electronic Circuit Breaker 6.3kA 1SDA07, 4 / f channels
  • RS Stock No. 259-3959
  • Mfr. Part No. 1SDA072012R1
Each
TWD2,176,853.00(exc. GST)
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