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

186 of 999+
Schneider Electric, ComPacT New generation MCCB 4P 400A, Breaking Capacity 800 → 1000 V, Fixed Mount
  • RS Stock No. 205-228
  • Mfr. Part No. C40K42D400
Each
$10,182.71(exc. GST)
ABB High Performance S800N MCB, 3P, 63A Curve D, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 435-380
  • Mfr. Part No. 2CCS893001R0631 S803N-D63
Each
$617.05(exc. GST)
Siemens SIVACON S4 Connecting Terminals for use with SIVACON S4
  • RS Stock No. 626-512
  • Mfr. Part No. 8PQ5000-0BA74
Each
$263.03(exc. GST)
Eaton Three Phase Surge Protector, 40kA, 2.2kV, DIN Rail Mount
  • RS Stock No. 120-848
  • Mfr. Part No. 167610 SPCT2-460/3
Each
$1,652.65(exc. GST)
Eaton Eaton Moeller NZM for use with N(S)2(-4), NZM2(-4), PN2(-4)
  • RS Stock No. 254-943
  • Mfr. Part No. 260144 NZM2-XDTVR
Each
$298.54(exc. GST)
Schneider Electric, ComPacT MCCB 4P 50A, Fixed Mount
  • RS Stock No. 260-7634
  • Mfr. Part No. C11H4TM050B
Each
$1,994.60(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 268-594
  • Mfr. Part No. 3VA6115-5JQ31-0AA0
Each
$5,718.25(exc. GST)
Eaton Moeller NZM Undervoltage Release for use with N(S)1(-4), NZM1(-4)
  • RS Stock No. 253-527
  • Mfr. Part No. 259468 NZM1-XUL110-130AC
Each
$322.07(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS Stock No. 231-385
  • Mfr. Part No. 113016 NZMB2-4-AF250-BT-NA
Each
$5,203.61(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 800A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 257-491
  • Mfr. Part No. 3VA5580-5GC46-0AA0
Each
$13,073.48(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 50A, Breaking Capacity 55 kA
  • RS Stock No. 209-7001
  • Mfr. Part No. 3VA1150-5EF32-0AA0
Each
$958.47(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 268-494
  • Mfr. Part No. 3VA6140-5KQ41-2AA0
Each
$5,987.34(exc. GST)
ETA Thermal Circuit Breaker - 1610 Single Pole 24V dc Voltage Rating, 10A Current Rating
  • RS Stock No. 409-889
  • Mfr. Part No. 1610-21-10A
Each
$20.90(exc. GST)
Phoenix Contact Surge Protector, 20kA, DIN Rail Mount
  • RS Stock No. 207-2721
  • Mfr. Part No. 2906716
Each
$224.09(exc. GST)
Eaton Eaton Moeller xPole 3 Phase Busbar, 415V
  • RS Stock No. 231-788
  • Mfr. Part No. 121093 EVG-25/3PHAS/N/10MODUL/LS
1 Pack of 10
$745.73(exc. GST)
Eaton Eaton Moeller NZM Undervoltage Release for use with N(S)2(-4), N(S)3(-4), NZM2(-4), NZM3(-4)
  • RS Stock No. 254-912
  • Mfr. Part No. 259640 NZM2/3-XUHIV2024AC
Each
$496.02(exc. GST)
Eaton NZM Labelling Plate for use with N(S)1(-4), N(S)2(-4), N(S)3(-4), N(S)4(-4), NZM1(-4), NZM2(-4), NZM3(-4),
  • RS Stock No. 121-793
  • Mfr. Part No. 144901 ZFS61/62-NZM-NA
Each
$17.78(exc. GST)
Phoenix Contact 1 Phase Surge Protector, 40kA, 1500V (Volts), DIN Rail Mount
  • RS Stock No. 131-660
  • Mfr. Part No. 2910372
Each
$167.26(exc. GST)
Schneider Electric, NSX MCCB 3P 100A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 219-8383
  • Mfr. Part No. LV433276
Each
$2,774.44(exc. GST)
Schneider Electric, ComPacT New Generation MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-7773
  • Mfr. Part No. C16H32M100
Each
$2,842.40(exc. GST)
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