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

1034 of 999+
Siemens ALPHA Assembly Kit for use with 3VL Molded Case Circuit Breakers
  • RS Stock No. 629-254
  • Mfr. Part No. 8GK4722-3KK10
Each
$331.91(exc. GST)
Siemens 400V (Volts) Remote Switch Circuit Trip for use with Remote Control Switch
  • RS Stock No. 613-373
  • Mfr. Part No. 5TT4115-1
Each
$110.07(exc. GST)
Siemens SENTRON 5SY4 MCB, 3P, 1.6A, Type A, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-302
  • Mfr. Part No. 5SY4315-5
Each
$429.14(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 249-664
  • Mfr. Part No. 3VA6440-8HM31-2AA0
Each
$11,772.87(exc. GST)
Siemens SENTRON Long Rear Connector for use with 3VA53/54, 3VA63/64
  • RS Stock No. 161-419
  • Mfr. Part No. 3VA9473-0QF00
Each
$919.82(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4579
  • Mfr. Part No. 3VA2125-7KQ36-0AA0
Each
$4,409.68(exc. GST)
Better World
Siemens Sentron 5SY7 MCB, 3P, 32A Curve C, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 622-0452
  • Mfr. Part No. 5SY7332-7
Each
$265.77(exc. GST)
Siemens SENTRON 3VA9 Wire Connector for use with 3VA2 100/160/250
  • RS Stock No. 218-1823
  • Mfr. Part No. 3VA9223-0JJ13
Each
$278.76(exc. GST)
Better World
Siemens SIRIUS Electronic Circuit Breaker 52A 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-063
  • Mfr. Part No. 3RV2332-4WC10
Each
$1,155.41(exc. GST)
Eaton IZMX/INX Electronic Circuit Breaker 800A , DIN Rail
  • RS Stock No. 127-494
  • Mfr. Part No. 183352 IZMX16H3-V08W-1
Each
$11,796.11(exc. GST)
BB-EV 2 Phase Busbar, 690V, 17.8mm Pitch
  • RS Stock No. 247-377
  • Mfr. Part No. 168864 BB-EVP-10/2P-1MU
Each
$86.76(exc. GST)
ABB Emax2 Electronic Circuit Breaker 250A Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-4469
  • Mfr. Part No. 1SDA072677R1
Each
$21,427.25(exc. GST)
Siemens SENTRON Communication Module for use with 3VA2 400/630/1000
  • RS Stock No. 210-9384
  • Mfr. Part No. 3VA9387-0TB50
Each
$378.03(exc. GST)
Siemens SENTRON Wire Connector for use with 3VA13/14, 3VA23/24
  • RS Stock No. 153-376
  • Mfr. Part No. 3VA9304-0JF60
Each
$553.43(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 500A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 257-659
  • Mfr. Part No. 3VA5450-7EC31-1AA0
Each
$6,996.43(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 20A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 271-9560
  • Mfr. Part No. 3VA10202ED320AA0
Each
$689.46(exc. GST)
Eaton IZMX/INX Electronic Circuit Breaker 1.25kA , Fixed
  • RS Stock No. 132-758
  • Mfr. Part No. 183912 IZMX40H4-V12F-1
Each
$22,210.46(exc. GST)
Siemens ALPHA Assembly Kit for use with 3VA2 Molded Case Circuit Breakers
  • RS Stock No. 629-305
  • Mfr. Part No. 8GK6723-2KK23
Each
$421.67(exc. GST)
Siemens SENTRON Connection Unit for use with Circuit Breaker Busbar
  • RS Stock No. 269-8411
  • Mfr. Part No. 8US1251-5NS10
Each
$75.17(exc. GST)
Hager NFT MCB, 1+N, 10A, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4741
  • Mfr. Part No. NFT710
Each
$183.35(exc. GST)
Results per page
1
1034
1178

Related links