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

23551 Products showing for Circuit Breakers

42 of 999+
In Stock
Siemens SENTRON 1 Phase Busbar, 18mm Pitch
  • RS Stock No. 124-3145
  • Mfr. Part No. 5ST3700
Each
$20.80(exc. GST)
In Stock
Siemens 230V ac Undervoltage Release Circuit Trip for use with 3RV2 Series Circuit Breakers
  • RS Stock No. 706-1939
  • Mfr. Part No. 3RV2902-1AP0
Each
$217.66(exc. GST)
Temporarily out of stock
Better World
Schneider Electric, Masterpact MCCB 4P 1kA, Fixed Mount
  • RS Stock No. 248-3764
  • Mfr. Part No. LV847138
Each
$20,943.23(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 268-621
  • Mfr. Part No. 3VA6115-7HN31-0AA0
Each
$3,879.44(exc. GST)
New product - Preorder today
Schneider Electric, ComPacT MCCB 1P 100A, Breaking Capacity 40 kA, Fixed Mount
  • RS Stock No. 655-283
  • Mfr. Part No. C10M1TM100
Each
$931.30(exc. GST)
Temporarily out of stock
Schneider Electric, PowerLogic, 63A, Energy Sensor, Wired
  • RS Stock No. 230-6677
  • Mfr. Part No. A9MEM1563
Each
$303.05(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 63A Curve C, 400V AC, 12V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7788
  • Mfr. Part No. 2CDS253001R0634 S203-C63
Each
$171.67(exc. GST)
Temporarily out of stock
Siemens SENTRON Adapter for use with 3VA13/14, 3VA23/24
  • RS Stock No. 161-881
  • Mfr. Part No. 3VA9367-0LF10
Each
$325.44(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 40A, Fixed Mount
  • RS Stock No. 260-9432
  • Mfr. Part No. C10F3TM040
Each
$950.95(exc. GST)
In Stock
Better World
Siemens Sentron 5SY7 MCB, 3P, 20A Curve C, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 622-0418
  • Mfr. Part No. 5SY7320-7
Each
$255.22(exc. GST)
In Stock
nVent ERIFLEX ERIFLEX Busbar
  • RS Stock No. 277-6174
  • Mfr. Part No. 568610
Each (In a Pack of 10)
$13.569(exc. GST)
Temporarily out of stock
C.BREAKER TMAX XT2 P Fp 3P Ef
  • RS Stock No. 192-0824
  • Mfr. Part No. 1SDA068187R1
Each
$555.76(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 90A, Breaking Capacity 100 kA, Screw Mount
  • RS Stock No. 207-255
  • Mfr. Part No. BJL36090LU
Each
$4,974.71(exc. GST)
Temporarily out of stock
Schneider Electric 12 Way Metal Consumer Unit, 100A, IP3x (with cover), IPxx D (on top) EZ9E12
  • RS Stock No. 245-134
  • Mfr. Part No. EZ9E12MCU
Each
$259.12(exc. GST)
In Stock
Schneider Electric Easy9 Busbar
  • RS Stock No. 850-8678
  • Mfr. Part No. EZ916BKIT
Each
$10.80(exc. GST)
In Stock
ABB PS1 3 Phase Busbar, 690V
  • RS Stock No. 445-0566
  • Mfr. Part No. 1SAM201906R1112 PS1-2-1-65
Each
$32.54(exc. GST)
In Stock
Phoenix Contact 1 Phase Surge Arrester, 50kA, 1.8kV, DIN Rail Mount
  • RS Stock No. 890-3736
  • Mfr. Part No. 2905333
Each
$525.26(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7772
  • Mfr. Part No. C16H32D160
Each
$3,544.59(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 2 5700 Single Pole 250V Voltage Rating Panel Mount, 15A Current Rating
  • RS Stock No. 729-2760
  • Mfr. Part No. 2-5700-IG2-P10-DD-000040-15A
Each
$64.19(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 269-851
  • Mfr. Part No. 3VA6115-6JT31-0AA0
Each
$5,180.08(exc. GST)
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