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

1107 of 999+
Temporarily out of stock
Eaton Moeller NZM Undervoltage Release for use with N(S)1(-4), NZM1(-4)
  • RS Stock No. 253-525
  • Mfr. Part No. 259458 NZM1-XU110-130DC
Each
$331.47(exc. GST)
Temporarily out of stock
Phoenix Contact Surge Protector, 20A, 1000V dc, Screw Mount Mount
  • RS Stock No. 484-009
  • Mfr. Part No. 1117754
Each
$733.05(exc. GST)
Temporarily out of stock
Siemens 5SV53 RCCB, 63A, 4 Pole, 30mA, Type A, 400V
  • RS Stock No. 328-466
  • Mfr. Part No. 5SV5346-6KL
Each
$650.60(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Hi-Touch LSI, 4 channels
  • RS Stock No. 259-4681
  • Mfr. Part No. 1SDA072958R1
Each
$24,197.58(exc. GST)
Temporarily out of stock
Miniature circuit breaker, 1 A, 1p
  • RS Stock No. 611-258
  • Mfr. Part No. PLSM-C1-Q-MW
Each
$90.15(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 50A, Breaking Capacity 25 kA
  • RS Stock No. 210-1663
  • Mfr. Part No. 3VA1150-3EE32-0AA0
Each
$746.28(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 50A, Breaking Capacity 70 kA
  • RS Stock No. 209-7002
  • Mfr. Part No. 3VA1150-6EE36-0AA0
Each
$760.24(exc. GST)
Temporarily out of stock
ABB OS Switch Disconnector for use with Low-Voltage Switch Technology
  • RS Stock No. 259-9764
  • Mfr. Part No. 1SCA114769R1001
Each
$195.18(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 400A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 341-221
  • Mfr. Part No. C40F37E400
Each
$20,618.91(exc. GST)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0327
  • Mfr. Part No. 8GK1081-5KK30
Each
$4,003.92(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 70 kA
  • RS Stock No. 209-6822
  • Mfr. Part No. 3VA1140-6EF36-0AA0
Each
$754.92(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Busbar Tap-Off Unit, Canalis KBC Series
  • RS Stock No. 219-8875
  • Mfr. Part No. KBC10DCC211
Each (In a Pack of 10)
$54.403(exc. GST)
Temporarily out of stock
Eaton BBA Busbar Adapter, 690V ac
  • RS Stock No. 250-887
  • Mfr. Part No. 199635 BBA0K-32-PI
Each
$114.94(exc. GST)
Last RS stock
TE Connectivity Thermal Circuit Breaker - W57 Single Pole 250V ac Voltage Rating, 5A Current Rating
  • RS Stock No. 782-7821
  • Mfr. Part No. W57-XB1A7A10-5
Each
$9.32(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 C120H MCB, 3P, 100A Curve C, 440V AC, 375V DC, 15 kA, 30 kA Breaking Capacity
  • RS Stock No. 776-3026
  • Mfr. Part No. A9N18469
Each
$524.68(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 3VA1 MCB, 2P, 20A
  • RS Stock No. 224-7823
  • Mfr. Part No. 3VA1120-5ED22-0AA0
Each
$872.30(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 271-9509
  • Mfr. Part No. 3VA1510-6GF42-0AA0
Each
$16,716.13(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 36 kA
  • RS Stock No. 209-6748
  • Mfr. Part No. 3VA1110-4EF42-0AA0
Each
$1,343.90(exc. GST)
New product - Preorder today
Schneider Electric Acti9 1 Phase Busbar, 230 → 240V ac, 9mm Pitch
  • RS Stock No. 654-673
  • Mfr. Part No. R9XFH357
Each
$156.28(exc. GST)
Temporarily out of stock
Eaton Moeller IZMX Electronic Circuit Breaker 5kA IZM63, Withdrawable
  • RS Stock No. 263-083
  • Mfr. Part No. 303648 IZM63N3-V50W-1
Each
$108,413.88(exc. GST)
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