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

1024 of 999+
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 100A, Fixed Mount
  • RS Stock No. 260-9515
  • Mfr. Part No. C10N4TM100
Each
$2,250.88(exc. GST)
Temporarily out of stock
Eaton Moeller IZMX Electronic Circuit Breaker 6.3kA IZMX/INX, Withdrawable
  • RS Stock No. 262-311
  • Mfr. Part No. 303696 IZM-CAS633-6300-1
Each
$17,353.22(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller NZM Undervoltage Release for use with N(S)2(-4), N(S)3(-4), NZM2(-4), NZM3(-4)
  • RS Stock No. 254-104
  • Mfr. Part No. 259505 NZM2/3-XU600AC
Each
$373.78(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 80A, Breaking Capacity 70 kA
  • RS Stock No. 209-6866
  • Mfr. Part No. 3VA1180-6EF46-0AA0
Each
$1,231.12(exc. GST)
Temporarily out of stock
Better World
Siemens SIRIUS Electronic Circuit Breaker 320mA 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 159-683
  • Mfr. Part No. 3RV2711-0DD10
Each
$779.30(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 800A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 270-4839
  • Mfr. Part No. 3VA2580-5HN32-0KF0
Each
$9,443.38(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 40A, Fixed Mount
  • RS Stock No. 260-9489
  • Mfr. Part No. C10N34V040
Each
$5,405.82(exc. GST)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IEGHS66 2 Pole Panel Mount, 40A Current Rating
  • RS Stock No. 275-0217
  • Mfr. Part No. IEGHS66-1REC4-53-40.0-A-01-V
1 Box of 5
$1,419.10(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4767
  • Mfr. Part No. 3VA2163-7MP36-0AA0
Each
$2,476.55(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-3786
  • Mfr. Part No. 3VA2140-6HL32-0AA0
Each
$1,760.70(exc. GST)
Temporarily out of stock
Lovato 3 Phase Busbar, 690V, 45mm Pitch
  • RS Stock No. 789-2938
  • Mfr. Part No. 11SMX9034
Each
$81.51(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 3VA1 MCB, 3P, 50A
  • RS Stock No. 224-7869
  • Mfr. Part No. 3VA1150-5MH36-0AA0
Each
$1,035.02(exc. GST)
In Stock
ETA ESX10 Electronic Circuit breaker 10A 12V ESX10-T, 1 channels , Plug-In Mounting
  • RS Stock No. 210-2148
  • Mfr. Part No. ESX10-TC-124-DC12V-10A-E
Each
$174.65(exc. GST)
In Stock
Siemens SENTRON Busbar Connector
  • RS Stock No. 187-5240
  • Mfr. Part No. 5ST3788-0
Each
$7.52(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 320A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3483
  • Mfr. Part No. 3VA1332-5MH32-0AA0
Each
$4,078.36(exc. GST)
Temporarily out of stock
Schneider Electric MCCB 3P 16 → 160A, Fixed Mount
  • RS Stock No. 178-7902
  • Mfr. Part No. LV426970
Each
$106.48(exc. GST)
Temporarily out of stock
Schneider Electric Busbar Tap-Off Unit with Fuse Isolator, Canalis Series
  • RS Stock No. 214-793
  • Mfr. Part No. KSB160SG4
Each
$2,814.64(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 20A, Breaking Capacity 14 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-210
  • Mfr. Part No. 3VA5120-4ED21-1AA0
Each
$1,097.33(exc. GST)
Temporarily out of stock
Phoenix Contact Surge Protector, 32A, 1000V dc
  • RS Stock No. 484-019
  • Mfr. Part No. 1140111
Each
$973.73(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3490
  • Mfr. Part No. 3VA1340-5EF42-0AA0
Each
$5,462.12(exc. GST)
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