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

23782 Products showing for Circuit Breakers

51 of 999+
In Stock
Schneider Electric, ComPacT MCCB 4P 250A, Breaking Capacity 40 kA, Fixed Mount
  • RS Stock No. 260-7867
  • Mfr. Part No. C25B4
Each
$2,404.05(exc. GST)
In Stock
Siemens Sentron Undervoltage Release for use with 3VA1 Series Circuit Breaker
  • RS Stock No. 874-4521
  • Mfr. Part No. 3VA9908-0BB11
Each
$407.62(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 C120N MCB, 4P, 63A Curve C, 440V AC, 500V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3070
  • Mfr. Part No. A9N18371
Each
$524.93(exc. GST)
Temporarily out of stock
Phoenix Contact TRABTECH Thermal Circuit Breaker - CB TM1 5A F1 P Single Pole, 5A Current Rating
  • RS Stock No. 768-0937
  • Mfr. Part No. 2800862
Each
$96.13(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller Series NZM Terminal Extention for use with N(S)3, NZM3, PN3
  • RS Stock No. 241-145
  • Mfr. Part No. 100514 NZM3-XKV70
Each
$336.18(exc. GST)
Temporarily out of stock
Phoenix Contact 1 Phase Surge Arrester, DIN Rail Mount
  • RS Stock No. 129-565
  • Mfr. Part No. 2858551
Each
$824.18(exc. GST)
Temporarily out of stock
Hager RCBO, 16A Current Rating, 1P + N Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 597-993
  • Mfr. Part No. ADH823F
Each
$620.31(exc. GST)
Temporarily out of stock
Eaton xComfort KLV Distribution Board Enclosure
  • RS Stock No. 125-091
  • Mfr. Part No. 178823 KLV-12HWS-SF
Each
$302.86(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 32A Curve C, 440V AC, 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-2373
  • Mfr. Part No. A9F07332
Each
$339.13(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 SE10 MCB Mini Circuit Breaker, 3P, 10A Curve C, 415V AC, 10000 A Breaking Capacity
  • RS Stock No. 339-675
  • Mfr. Part No. SE10C310
Each
$255.06(exc. GST)
Limited stock
ABB SN201 MCB, 1+N, 2A Curve C, 230V AC, 4.5 kA Breaking Capacity
  • RS Stock No. 191-9456
  • Mfr. Part No. 2CSS245102R0024 SN201 L C2-L
Each
$43.15(exc. GST)
Temporarily out of stock
Hager BFF RCCB, 40A, 3P+N Pole, 300mA, Type F
  • RS Stock No. 602-071
  • Mfr. Part No. BFF940F
Each
$809.05(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 63A Curve C, 500V DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3222
  • Mfr. Part No. A9N61539
Each
$178.74(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 A9F9 MCB, 4P, 16A, Type Z, 400V AC, 250V DC, 20 kA, 15 kA Breaking Capacity
  • RS Stock No. 211-2497
  • Mfr. Part No. A9F92416
Each
$512.92(exc. GST)
In Stock
Legrand MCB, 1P, 16A
  • RS Stock No. 293-1417
  • Mfr. Part No. 0 058 11
Each
$22.45(exc. GST)
Temporarily out of stock
Hager NFN MCB, 1P, 2A Curve C, 230 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 597-902
  • Mfr. Part No. NFN102
Each
$109.68(exc. GST)
Limited stock
ETA REX12 Electronic Circuit breaker 1A 24V REX12-T, DIN Rail Mount
  • RS Stock No. 175-0370
  • Mfr. Part No. REX12-TA2-107-DC24V-1A/1A
Each
$161.30(exc. GST)
In Stock
Eaton Circuit Breaker - NZM..-ME..NA 3 Pole 690V ac Voltage Rating, 90A Current Rating
  • RS Stock No. 250-9706
  • Mfr. Part No. 118967 NZMH2-ME90-NA
Each
$3,946.43(exc. GST)
In Stock
ETA Thermal Circuit Breaker - EM12-T 24V Voltage Rating DIN Rail Mount, 40A Current Rating
  • RS Stock No. 175-0362
  • Mfr. Part No. EM12-T01-001-DC24V-40A
Each
$64.35(exc. GST)
In Stock
Schneider Electric RCBO, 16A Current Rating, 1P Poles, Type B, Acti9 Range
  • RS Stock No. 245-142
  • Mfr. Part No. A9D56816
Each
$397.73(exc. GST)
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