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

1054 of 999+
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 32A, Fixed Mount
  • RS Stock No. 260-7630
  • Mfr. Part No. C11H4TM032B
Each
$2,058.65(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 3 channels
  • RS Stock No. 259-3342
  • Mfr. Part No. 1SDA071248R1
Each
$62,812.01(exc. GST)
Temporarily out of stock
Phoenix Contact Electronic Circuit Breaker 2A EC-E1 2A, 1 channels
  • RS Stock No. 248-2233
  • Mfr. Part No. 0903024
Each (In a Pack of 6)
$192.605(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 30A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-034
  • Mfr. Part No. 3VA6130-1MS31-0AA0
Each
$1,558.50(exc. GST)
Temporarily out of stock
Hager NFT MCB, 3+N, 25A, 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4752
  • Mfr. Part No. NFT825
Each
$378.65(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 260-359
  • Mfr. Part No. 3VA6340-8KM41-0AA0
Each
$12,624.96(exc. GST)
In Stock
ABB SMISSLINE TP S400M MCB, 1P, 4A Curve B, 230V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 177-838
  • Mfr. Part No. 2CCS571001R0045 S401M-B4
Each
$86.26(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-704
  • Mfr. Part No. 3VA6210-6HN41-0AA0
Each
$9,785.17(exc. GST)
Temporarily out of stock
Siemens SENTRON Mounting Plate for use with 3VA1 100/160
  • RS Stock No. 210-9282
  • Mfr. Part No. 3VA9111-0WJ30
Each
$63.87(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller NZM Undervoltage Release for use with N(S)2(-4), N(S)3(-4), NZM2(-4), NZM3(-4)
  • RS Stock No. 254-102
  • Mfr. Part No. 259499 NZM2/3-XU208-240AC
Each
$373.78(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 260-666
  • Mfr. Part No. 3VA6340-5HL41-0AA0
Each
$7,699.65(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Busbar End Feed Unit
  • RS Stock No. 219-8919
  • Mfr. Part No. KSA400AB4
Each
$5,384.07(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 80A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 271-9427
  • Mfr. Part No. 3VA1180-5ED46-0AA0
Each
$1,351.97(exc. GST)
Temporarily out of stock
Schneider Electric Acti 9 3 Phase Distribution Board, 12 Way, 250 A
  • RS Stock No. 230-6847
  • Mfr. Part No. SEA9BN12TNA
Each
$844.89(exc. GST)
Temporarily out of stock
Siemens SENTRON Option Plug
  • RS Stock No. 277-0968
  • Mfr. Part No. 3WA9111-0EX32
Each
$2,798.95(exc. GST)
In Stock
Siemens Sentron Undervoltage Release for use with 3VA1 Series Circuit Breaker
  • RS Stock No. 874-4525
  • Mfr. Part No. 3VA9908-0BB25
Each
$407.62(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 125A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 341-431
  • Mfr. Part No. NHGF36125TW
Each
$3,753.39(exc. GST)
Temporarily out of stock
Eaton NZM Jumper Link for use with N4-4-...-S1(-S15)-PV-NA, N4-4-…-S1(-S15)-DC
  • RS Stock No. 121-565
  • Mfr. Part No. 152553 NZM4-4-XKV2P-K
Each
$1,893.45(exc. GST)
Temporarily out of stock
ABB Cable for use with Miniature Circuit Breakers
  • RS Stock No. 250-4729
  • Mfr. Part No. 2CDL200301R1006
Each
$19.77(exc. GST)
Temporarily out of stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 115A Current Rating
  • RS Stock No. 175-1572
  • Mfr. Part No. GV4PEM115S
Each
$1,731.90(exc. GST)
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