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

92 of 999+
Temporarily out of stock
Better World
Schneider Electric Horizontal Distribution Busbar Trunking, 3m, 630A, Canalis KS Series
  • RS Stock No. 211-0482
  • Mfr. Part No. KSA630ED4306
Each
$3,082.75(exc. GST)
Temporarily out of stock
Phoenix Contact Surge Protector, 40kA, 1000V dc, Wall Mount Mount
  • RS Stock No. 497-806
  • Mfr. Part No. 1318524
Each
$2,446.47(exc. GST)
In Stock
Schurter TA36 Rocker Circuit Breaker - TA36 Single Pole 32 V dc, 277 V ac Voltage Rating, 3A Current Rating
  • RS Stock No. 221-5590
  • Mfr. Part No. 3-128-201
Each
$26.43(exc. GST)
Temporarily out of stock
ABB PBFC 3, 3+N Phase Busbar
  • RS Stock No. 203-387
  • Mfr. Part No. 1STQ007404A0000
Each
$986.38(exc. GST)
Temporarily out of stock
Schneider Electric Acti 9 3 Phase Distribution Board, 8 Way, 250 A
  • RS Stock No. 230-6852
  • Mfr. Part No. SEA9BN8TNA
Each
$647.38(exc. GST)
In Stock
Siemens 230V ac Circuit Trip
  • RS Stock No. 622-0654
  • Mfr. Part No. 5TT4102-0
Each
$153.36(exc. GST)
Temporarily out of stock
Schneider Electric Canalis 1 Phase Busbar, 230-400V
  • RS Stock No. 212-224
  • Mfr. Part No. KBA40ED2305W
1 Pack of 6
$2,956.97(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY6 MCB, 4P, 6A Curve B, 400V AC, 60V DC, 30 kA Breaking Capacity
  • RS Stock No. 610-640
  • Mfr. Part No. 5SY6606-6
Each
$297.63(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 1616 Single Pole 32V Voltage Rating, 25A Current Rating
  • RS Stock No. 729-2745
  • Mfr. Part No. 1616-21-25A
Each
$28.95(exc. GST)
Unavailable
Schneider Electric ComPact Trip Unit for use with Compact NSX 100/160/250 circuit breakers
  • RS Stock No. 221-0929
  • Mfr. Part No. LV429116
Each
$3,080.06(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA, 3 channels
  • RS Stock No. 156-693
  • Mfr. Part No. 3VA2340-7KP32-0AA0
Each
$7,699.19(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 800A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 257-485
  • Mfr. Part No. 3VA5580-1BB66-0AA0
Each
$11,683.18(exc. GST)
Temporarily out of stock
Schneider Electric ComPact Long Terminal Shield for use with Circuit Breaker
  • RS Stock No. 230-6616
  • Mfr. Part No. 33628
Each
$182.82(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 70 kA
  • RS Stock No. 209-6875
  • Mfr. Part No. 3VA1216-6EF32-0AA0
Each
$1,975.53(exc. GST)
Temporarily out of stock
Siemens ALPHA Flange Plate for use with ALPHA 1250 DIN
  • RS Stock No. 628-992
  • Mfr. Part No. 8GK9100-0KK14
Each
$129.43(exc. GST)
Unavailable
Schneider Electric, NSX Range MCCB 3P 160A, Breaking Capacity 90 kA, Fixed Mount
  • RS Stock No. 849-4359
  • Mfr. Part No. LV430840
Each
$1,045.62(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 160A, Breaking Capacity 36 kA, Panel Mount
  • RS Stock No. 654-760
  • Mfr. Part No. IL1603P36
Each
$2,106.19(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 3.2kA Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-4340
  • Mfr. Part No. 1SDA072508R1
Each
$40,886.77(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 3 Phase Distribution Board, 16 Way, 250 A
  • RS Stock No. 244-940
  • Mfr. Part No. SE48B250
Each
$1,632.61(exc. GST)
In Stock
Siemens SIRIUS Connection Plug for use with 3RV2 Series
  • RS Stock No. 755-2965
  • Mfr. Part No. 3RV2917-5CA00
Each
$24.41(exc. GST)
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