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+
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
ABB System Pro M Compact S200 MCB, 1P, 6A Curve C, 230V AC, 72V DC, 20 kA Breaking Capacity
  • RS Stock No. 191-9458
  • Mfr. Part No. 2CDS251001R0064 S201-C6
Each
TWD803.00(exc. GST)
In Stock
Hager HMD MCB, 3P, 80A, 400V AC, 15 Breaking Capacity
  • RS Stock No. 602-231
  • Mfr. Part No. HMD380
Each
TWD23,135.00(exc. GST)
Temporarily out of stock
Eaton NZMH3 Electronic Circuit Breaker 400A 70V NZM, 3 channels , Fixed
  • RS Stock No. 120-676
  • Mfr. Part No. 168918 NZMH3-S400-SVE
Each
TWD111,731.00(exc. GST)
In Stock
ABB S303 MCB, 3P, 32A Curve D, 415V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 203-068
  • Mfr. Part No. 2CDS383001R0321
Each
TWD12,966.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA15/25 1000
  • RS Stock No. 269-7234
  • Mfr. Part No. 3VA9604-0JC44
Each (In a Pack of 4)
TWD8,382.50(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 1658 Single Pole 250V Voltage Rating Panel Mount, 16A Current Rating
  • RS Stock No. 344-5333
  • Mfr. Part No. 1658-G21-02-P10-16A
Each
TWD196.00(exc. GST)
In Stock
Better World
Schneider Electric iC60 RCD, 40A, 30mA
  • RS Stock No. 734-9201
  • Mfr. Part No. A9Q11440
Each
TWD14,726.00(exc. GST)
In Stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7319
  • Mfr. Part No. 1SDA067498R1 Ekip LS/I In=40A XT4 3p
Each
TWD17,260.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Straight Busbar Trunking, 3m, 25A, Canalis KBB Series
  • RS Stock No. 211-0370
  • Mfr. Part No. KBB25ED42305TW
Each
TWD7,422.00(exc. GST)
In Stock
ABB, Formula DSA MCCB 1P 125A, Fixed Mount
  • RS Stock No. 237-6139
  • Mfr. Part No. 1SDA066696R1
Each
TWD5,699.00(exc. GST)
Temporarily out of stock
Schneider Electric TeSys Enclosure for use with TeSys GV3P/L
  • RS Stock No. 207-290
  • Mfr. Part No. GV3PC01
Each
TWD10,643.00(exc. GST)
Temporarily out of stock
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)
In Stock
Phoenix Contact CAPAROC Electronic Circuit Breaker 4A, 2 channels
  • RS Stock No. 265-8974
  • Mfr. Part No. 1115655
Each
TWD3,293.00(exc. GST)
Temporarily out of stock
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)
Temporarily out of stock
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)
Temporarily out of stock
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)
Temporarily out of stock
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)
Temporarily out of stock
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)
Temporarily out of stock
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)
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