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

35874 Products showing for Circuit Breakers

88 of 999+
Better World
ABB System Pro M Compact S200M MCB, 2P, 6A Curve D
  • RS Stock No. 231-9724
  • Mfr. Part No. 2CDS272001R0061 S202M D 6A - 15 KA
1 Box of 1
TWD2,271.00(exc. GST)
Schneider Electric Multi9 M9F MCB Mini Circuit Breaker, 3P, 25A Curve B, 277V AC, 10 kA Breaking Capacity
  • RS Stock No. 654-532
  • Mfr. Part No. M9F21325
Each
TWD5,730.00(exc. GST)
Hager Padlockable Locking Kit for use with MCB, RCBO, RCCB, Trip-Free Switches
  • RS Stock No. 144-4696
  • Mfr. Part No. MZN175
Each (In a Pack of 2)
TWD827.50(exc. GST)
ABB S800U MCB, 1P, 60A, Type Z, 240V AC, 30 kA Breaking Capacity
  • RS Stock No. 141-024
  • Mfr. Part No. 2CCS881017R0605
Each
TWD10,327.00(exc. GST)
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 80A Current Rating
  • RS Stock No. 175-1449
  • Mfr. Part No. GV4L80S
Each
TWD34,602.00(exc. GST)
Schneider Electric Cross Elbow Busbar Trunking, 800mm, 630A, Canalis Series
  • RS Stock No. 340-965
  • Mfr. Part No. KSA630DZE43A
Each
TWD98,543.00(exc. GST)
Better World
Siemens SENTRON Terminal for use with 3VA2 250
  • RS Stock No. 210-9357
  • Mfr. Part No. 3VA9263-0JA12
Each
TWD1,595.00(exc. GST)
ETA Thermal Circuit Breaker - 3120-N 5 Pole 50 V DC, 240 V AC Voltage Rating, 16A Current Rating
  • RS Stock No. 210-2113
  • Mfr. Part No. 3120-N554-P7T1-W19DG4-16A
Each
TWD1,220.00(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-068
  • Mfr. Part No. 3VA6110-8KL31-0AA0
Each
TWD83,142.00(exc. GST)
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 3P 63A, Breaking Capacity 18.5 kA, Plug In
  • RS Stock No. 230-647
  • Mfr. Part No. 112726 NZMB1-S63-SVE
Each
TWD17,663.00(exc. GST)
Eaton Eaton Moeller NZM Door Coupling Handle for use with N(S)3, NZM3
  • RS Stock No. 247-081
  • Mfr. Part No. 100685 NZM3-XTVDV-NA
Each
TWD8,468.00(exc. GST)
Siemens SENTRON 5SY8 MCB, 2P, 500mA Curve D, 400V AC, 70 kA Breaking Capacity
  • RS Stock No. 610-601
  • Mfr. Part No. 5SY8205-8
Each
TWD5,930.00(exc. GST)
Siemens SENTRON 5SJ4140 MCB, 1P, 40A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 299-743
  • Mfr. Part No. 5SJ4140-8HG41
Each
TWD3,663.00(exc. GST)
Better World
Schneider Electric Acti9 1 Phase Busbar, 230V, 9mm Pitch
  • RS Stock No. 238-4094
  • Mfr. Part No. A9XPV748
Each (In a Pack of 5)
TWD8,576.40(exc. GST)
ABB, T6S MCCB 4P 800A, Fixed Mount
  • RS Stock No. 237-5993
  • Mfr. Part No. 1SDA060285R1 T6S800 FF PR222-LSI 800A
Each
TWD140,267.00(exc. GST)
ETA Thermal Circuit Breaker - 8340 Single Pole 80V dc Voltage Rating Flange Mount, 20A Current Rating
  • RS Stock No. 407-0766
  • Mfr. Part No. 8340-F410-P1M1-A3H0-20A
Each
TWD2,807.00(exc. GST)
Schneider Electric, Compact MCCB 3P 1kA, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 340-883
  • Mfr. Part No. C100L3FM
Each
TWD180,576.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 258-806
  • Mfr. Part No. 271152 NZMH2-VE160-NA
Each
TWD72,951.00(exc. GST)
Better World
ABB Emax2 Electronic Circuit Breaker 800A Ekip G Hi-Touch LSIG, 3 channels
  • RS Stock No. 259-3064
  • Mfr. Part No. 1SDA070920R1
Each
TWD446,794.00(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9406
  • Mfr. Part No. 3VA1163-6GF42-0AA0
Each
TWD21,503.00(exc. GST)
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