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

212 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 320A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3482
  • Mfr. Part No. 3VA1332-5GF42-0AA0
Each
TWD182,274.00(exc. GST)
Temporarily out of stock
Hager RCBO, 30A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type F
  • RS Stock No. 602-229
  • Mfr. Part No. ADF820F
Each
TWD13,175.00(exc. GST)
Temporarily out of stock
Better World
ABB, XT4S MCCB 4P 63A, Fixed Mount
  • RS Stock No. 236-6781
  • Mfr. Part No. 1SDA068507R1 XT4S 160 Ekip LSIG 63A FF
Each
TWD75,993.00(exc. GST)
Temporarily out of stock
Eaton NZMH3 Electronic Circuit Breaker 400A 70V , 3 channels , Fixed
  • RS Stock No. 120-672
  • Mfr. Part No. 168914 NZMH3-A400-SVE
Each
TWD106,274.00(exc. GST)
Temporarily out of stock
ABB Tmax XT Rear Terminal for use with Tmax XT
  • RS Stock No. 237-6036
  • Mfr. Part No. 1SDA066273R1 R FP XT3-XT4 4PCS
Each
TWD3,367.00(exc. GST)
Temporarily out of stock
Schneider Electric MCCB
  • RS Stock No. 178-7999
  • Mfr. Part No. LV426900
Each
TWD11,585.00(exc. GST)
In Stock
ABB SU200 M MCB, 1P, 6A Curve C, 277V AC, 48V DC, 15 kA Breaking Capacity
  • RS Stock No. 203-848
  • Mfr. Part No. 2CDS271337R0064
Each
TWD3,583.00(exc. GST)
In Stock
Schneider Electric Acti 9 3 Phase Busbar, 230 → 400V, 18mm Pitch
  • RS Stock No. 191-9524
  • Mfr. Part No. A9XPN724
Each
TWD2,025.00(exc. GST)
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 25A Curve B, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7573
  • Mfr. Part No. 2CDS252001R0255 S202-B25
Each
TWD1,598.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 1P, 10A Curve C, 250V DC
  • RS Stock No. 772-1509
  • Mfr. Part No. A9N61508
Each
TWD2,478.00(exc. GST)
Temporarily out of stock
Legrand Circuit Breaker - 4 Pole 440V Voltage Rating Screw Mount, 60A Current Rating
  • RS Stock No. 255-2316
  • Mfr. Part No. 401013
Each
TWD26,170.00(exc. GST)
Temporarily out of stock
Better World
ABB System Pro M Compact S200M MCB, 2P, 10A Curve K
  • RS Stock No. 231-9728
  • Mfr. Part No. 2CDS272001R0427 S202M K 10A - 15 KA
1 Box of 1
TWD2,500.00(exc. GST)
Temporarily out of stock
Eaton MCB, 3P, 13A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 240-562
  • Mfr. Part No. 101348 PLI-D13/3N
Each
TWD6,322.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Horizontal Distribution Busbar Trunking, 3m, 250A, KS Series
  • RS Stock No. 219-8915
  • Mfr. Part No. KSA250ED43012
Each
TWD49,279.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Vertical Distribution Busbar Trunking, 2.5m, 400A, Canalis KS Series
  • RS Stock No. 248-4080
  • Mfr. Part No. KSA400EV4254
Each
TWD92,509.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Connection Unit for use with Circuit Breaker Busbar
  • RS Stock No. 269-8408
  • Mfr. Part No. 8US1250-5AT10
Each
TWD1,224.00(exc. GST)
Temporarily out of stock
Siemens RCBO, 63A Current Rating, 2P Poles, 300mA Trip Sensitivity, Type A, SENTRON Range
  • RS Stock No. 211-9579
  • Mfr. Part No. 5SM2625-8
Each
TWD10,645.00(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 3 kA
  • RS Stock No. 245-665
  • Mfr. Part No. 3VA6225-6HN41-0AA0
Each
TWD105,748.00(exc. GST)
Limited stock
ABB IEC Range Busbar for use with DDA200, F200, S200
  • RS Stock No. 250-4748
  • Mfr. Part No. 2CDL231001R1009
Each
TWD284.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 5SY7 MCB, 2P, 500mA Curve C, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 209-6709
  • Mfr. Part No. 5SY7205-7
Each
TWD4,060.00(exc. GST)
1
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