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

237 of 999+
In Stock
Schneider Electric Mureva Enclosure
  • RS Stock No. 466-0533
  • Mfr. Part No. 13443
Each
TWD4,380.00(exc. GST)
Temporarily out of stock
Better World
Siemens RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 225-8771
  • Mfr. Part No. 5SU1356-7GV16
Each (In a Pack of 36)
TWD6,004.40(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 32A Curve K, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-8006
  • Mfr. Part No. 2CDS252001R0537 S202-K32
Each
TWD2,834.00(exc. GST)
In Stock
Better World
Siemens RCBO, 13A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 225-8747
  • Mfr. Part No. 5SU1354-6LB13
Each
TWD10,133.00(exc. GST)
In Stock
ABB RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity
  • RS Stock No. 231-9934
  • Mfr. Part No. 2CSR255151R1165 DSE201 B16 A30
Each
TWD2,611.00(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)
In Stock
Schneider Electric Acti9 Active Vigi iC60 MCB Mini Circuit Breaker, 2P, 25A, Type A-SI, 230V AC
  • RS Stock No. 655-444
  • Mfr. Part No. A9V6E225
Each
TWD25,011.00(exc. GST)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 4P, 63A Curve B, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 124-3210
  • Mfr. Part No. 5SY4463-6
Each
TWD5,555.00(exc. GST)
Temporarily out of stock
Better World
Siemens 5sV3 RCCB, 80A, 4 Pole, 30mA, Type A, 400V ac
  • RS Stock No. 211-9650
  • Mfr. Part No. 5SV3347-6
Each
TWD30,330.00(exc. GST)
Temporarily out of stock
Phoenix Contact Surge Protector, 20kA, On Base Element Mount
  • RS Stock No. 201-4035
  • Mfr. Part No. 2909596
Each
TWD2,446.00(exc. GST)
In Stock
Better World
Schneider Electric Surge Protector, 20kA, DIN Rail Mount
  • RS Stock No. 776-3834
  • Mfr. Part No. A9L16618
Each
TWD18,286.00(exc. GST)
Temporarily out of stock
Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 7.5 kA, Fixed Mount
  • RS Stock No. 256-071
  • Mfr. Part No. 265811 NZMN1-4-A40
Each
TWD21,341.00(exc. GST)
Temporarily out of stock
Phoenix Contact Surge Protector, 32A, 1000V dc
  • RS Stock No. 521-338
  • Mfr. Part No. 1140960
Each
TWD31,591.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 25A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 259-426
  • Mfr. Part No. 281300 NZMH2-M25
Each
TWD19,770.00(exc. GST)
Temporarily out of stock
ABB, Tmax MCCB 3P 320A, Fixed Mount
  • RS Stock No. 237-5964
  • Mfr. Part No. 1SDA054336R1 T5S400 FF PR222-LSI 320A
Each
TWD67,275.00(exc. GST)
In Stock
Siemens SIRIUS 3 Phase Busbar
  • RS Stock No. 124-3124
  • Mfr. Part No. 3RV2917-1E
Each
TWD1,972.00(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 Plug In Kit for use with 3VA1 400/630 and 3VA2 400/630
  • RS Stock No. 210-9373
  • Mfr. Part No. 3VA9323-0KP00
Each
TWD35,637.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 2P 200A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-315
  • Mfr. Part No. 3VA5220-7ED61-0AA0
Each
TWD55,804.00(exc. GST)
Temporarily out of stock
Hager BFH RCCB, 40A, 3P+N Pole, 300mA, Type A-HI
  • RS Stock No. 597-992
  • Mfr. Part No. BFH940F
Each
TWD14,351.00(exc. GST)
1
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