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

23594 Products showing for Circuit Breakers

1066 of 999+
Temporarily out of stock
Phoenix Contact Surge Protector, DIN Rail Mount
  • RS Stock No. 207-2732
  • Mfr. Part No. 2906799
Each
$204.89(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 800A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 250-070
  • Mfr. Part No. 3VA6580-7JT46-2AA0
Each
$25,563.96(exc. GST)
Temporarily out of stock
ABB IEC Range Busbar for use with DDA200, F200, S200
  • RS Stock No. 250-4737
  • Mfr. Part No. 2CDL210001R3010
Each
$17.63(exc. GST)
Temporarily out of stock
Siemens ALPHA Busbar
  • RS Stock No. 629-038
  • Mfr. Part No. 8GK9736-0KK50
Each
$494.74(exc. GST)
Temporarily out of stock
Schneider Electric Flexible Busbar Trunking, 5m, 630A, Canalis Series
  • RS Stock No. 207-233
  • Mfr. Part No. KSA630ED35010
Each
$7,248.85(exc. GST)
Temporarily out of stock
Hager CDB RCCB, 40A, 4 Pole, 30mA, Type B, 230 → 400V ac
  • RS Stock No. 597-921
  • Mfr. Part No. CDB440F
Each
$2,316.17(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Dip LI, 4 channels
  • RS Stock No. 259-3615
  • Mfr. Part No. 1SDA071591R1
Each
$15,834.37(exc. GST)
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-046
  • Mfr. Part No. KV 9440 M
Each
$528.14(exc. GST)
Temporarily out of stock
Siemens SENTRON Insulation accessory for use with 3VA13/14, 3VA23/24
  • RS Stock No. 158-041
  • Mfr. Part No. 3VA9481-0WK40
Each
$174.94(exc. GST)
Temporarily out of stock
Eaton SASY 60i Busbar
  • RS Stock No. 251-376
  • Mfr. Part No. 215269 CU12X10
Each
$136.86(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 500A, Plug In
  • RS Stock No. 122-448
  • Mfr. Part No. LV563305P
Each
$1,619.13(exc. GST)
Temporarily out of stock
Siemens 5SV43 RCCB, 40A, 2 Pole, 30mA, Type AC, 230V
  • RS Stock No. 328-511
  • Mfr. Part No. 5SV4314-0MB
Each
$227.28(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7864
  • Mfr. Part No. C25B3TM160
Each
$3,029.57(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 Acti9 iC60 MCB, 2P, 50A Curve B, 500V AC, 6000 A Breaking Capacity
  • RS Stock No. 429-207
  • Mfr. Part No. A9F76250
Each
$629.16(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller NZM Undervoltage Release for use with N(S)4(-4), NZM4(-4)
  • RS Stock No. 253-751
  • Mfr. Part No. 266258 NZM4-XUHIV2024DC
Each
$756.99(exc. GST)
Temporarily out of stock
Miniature circuit breaker, 63 A, 3p+N
  • RS Stock No. 611-266
  • Mfr. Part No. PLSM-C63/3N-MW
Each
$425.32(exc. GST)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 1P, 25A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1262
  • Mfr. Part No. 5SY4125-7
Each
$118.49(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 A9F9 MCB, 3P, 2A Curve C, 400V AC, 180V DC, 20 kA, 15 kA Breaking Capacity
  • RS Stock No. 211-2503
  • Mfr. Part No. A9F94302
Each
$386.05(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 4P 100A, Breaking Capacity 65 kA, Clip-On
  • RS Stock No. 346-819
  • Mfr. Part No. BJF46100
Each
$3,825.73(exc. GST)
Temporarily out of stock
Hager CFB RCCB, 40A, 4 Pole, 300mA, Type B, 230 → 400V ac
  • RS Stock No. 597-930
  • Mfr. Part No. CFB440F
Each
$2,075.91(exc. GST)
1
1066
1180
Results per page

Related links