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

23542 Products showing for Circuit Breakers

115 of 999+
Temporarily out of stock
Siemens SENTRON Support for use with Door Mounted Rotary Operator 3VA20/21/22
  • RS Stock No. 263-644
  • Mfr. Part No. 3VA9267-0GA85
Each
$142.42(exc. GST)
Temporarily out of stock
ABB S-ARC1 MCB, 1+N, 13A Curve C, 240V AC, 6 kA Breaking Capacity
  • RS Stock No. 175-9926
  • Mfr. Part No. 2CSA255901R9134 S-ARC1 C13
Each
$454.76(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 874-4143
  • Mfr. Part No. 3VA1110-3ED36-0AA0
Each
$1,024.08(exc. GST)
Temporarily out of stock
Siemens SENTRON Connection Kit
  • RS Stock No. 277-0838
  • Mfr. Part No. 3WA9111-0AX11
Each
$79.63(exc. GST)
Temporarily out of stock
Hager CDA RCD Switch, 40A, 2 Pole, 30mA, Type A, 230V
  • RS Stock No. 599-823
  • Mfr. Part No. CDA749F
Each
$220.20(exc. GST)
Temporarily out of stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - GV4LE 3 Pole 690V ac Voltage Rating, 7A Current Rating
  • RS Stock No. 175-1461
  • Mfr. Part No. GV4LE07S6
Each
$844.89(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-428
  • Mfr. Part No. 3VA6440-6KP41-0AA0
Each
$20,047.26(exc. GST)
In Stock
Siemens SENTRON 3 Phase Busbar, 27mm Pitch
  • RS Stock No. 187-5169
  • Mfr. Part No. 5ST3617
Each
$31.64(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3810
  • Mfr. Part No. 3VA2040-8JQ32-0AA0
Each
$4,251.63(exc. GST)
Temporarily out of stock
Eaton ZSD-K29 Distribution Board
  • RS Stock No. 127-347
  • Mfr. Part No. 183257 ZSD-K29
Each
$738.79(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 249-373
  • Mfr. Part No. 3VA6440-8KT31-0AA0
Each
$12,602.57(exc. GST)
Temporarily out of stock
Eaton Busbar Support, xEnergy Basic Series
  • RS Stock No. 251-181
  • Mfr. Part No. 193678 EPTP600-BP400
Each
$65.68(exc. GST)
In Stock
Better World
Siemens SIRIUS Electronic Circuit Breaker 40A 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-047
  • Mfr. Part No. 3RV2041-4FA10-0DA0
Each
$1,409.96(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 4P 110A, Breaking Capacity 65 kA, Clip-On
  • RS Stock No. 341-149
  • Mfr. Part No. BJF46110
Each
$4,782.01(exc. GST)
Temporarily out of stock
Eaton NZM Undervoltage Release for use with Circuit Breaker
  • RS Stock No. 242-987
  • Mfr. Part No. 189781 NZM2/3-XUHIV24DC-PI
Each
$477.24(exc. GST)
In Stock
Phoenix Contact Electronic Circuit Breaker 4A 24V PTCB, DIN Rail Mount
  • RS Stock No. 201-3968
  • Mfr. Part No. 2909906
Each
$83.12(exc. GST)
Temporarily out of stock
Eaton NZM Circuit Breaker for use with Circuit Breaker
  • RS Stock No. 239-856
  • Mfr. Part No. 192278 NZMN3-4-PX400/VAR
Each
$7,934.19(exc. GST)
Temporarily out of stock
Schneider Electric MasterPact External Current Sensor for use with Earth-Leakage Protection
  • RS Stock No. 214-759
  • Mfr. Part No. LV833573SP
Each
$6,979.67(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 110A, Breaking Capacity 7 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-505
  • Mfr. Part No. 3VA5111-5GD41-0AA0
Each
$2,368.80(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 2P, 500mA Curve C, 400V AC, 70 kA Breaking Capacity
  • RS Stock No. 610-458
  • Mfr. Part No. 5SY8205-7
Each
$304.55(exc. GST)
1
115
1178
Results per page

Related links