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

1751 of 999+
ABB MCCB Molded Case Circuit Breaker 3P 400A, Fixed Mount
  • RS Stock No. 250-4097
  • Mfr. Part No. 1SDA054365R1
Each
TWD165,367.00(exc. GST)
Schneider Electric, ComPacT MCCB 3P 320A, Fixed Mount
  • RS Stock No. 260-8088
  • Mfr. Part No. C40F31M320
Each
TWD111,769.00(exc. GST)
Eaton xEffect MCB, 3P, 2A Curve D, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3541
  • Mfr. Part No. 278884 FAZ-D2/3
Each
TWD3,969.00(exc. GST)
Siemens SIRIUS Undervoltage Release for use with Motor Circuit Breaker
  • RS Stock No. 157-845
  • Mfr. Part No. 3RV1912-1CP0
Each
TWD2,398.00(exc. GST)
Eaton xEffect FAZ MCB, 3P, 40A Curve C, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 240-606
  • Mfr. Part No. 102296 FAZ-C40/3-RT
Each
TWD9,579.00(exc. GST)
Legrand Single Phase Surge Arrester, 40kA, 1.7kV, DIN Rail Mount
  • RS Stock No. 266-1370
  • Mfr. Part No. 412299
Each
TWD6,364.00(exc. GST)
SENTRON Plug In Unit for use with 3VA61/62 Series
  • RS Stock No. 263-963
  • Mfr. Part No. 3VA9143-0KP00
1 Kit
TWD14,291.00(exc. GST)
Hager Steel Accessory Kit
  • RS Stock No. 252-2627
  • Mfr. Part No. UC133P
Each
TWD6,683.00(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3579
  • Mfr. Part No. 3VA2010-7HN46-0AA0
Each
TWD116,293.00(exc. GST)
Lovato RCBO, 13A Current Rating, 1P + N Poles, 30mA Trip Sensitivity, Type A, P1RE1NC Range
  • RS Stock No. 276-5678
  • Mfr. Part No. P1RE1NC13A030
Each
TWD5,485.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 630A, Breaking Capacity 9 kA, Fixed Mount
  • RS Stock No. 229-479
  • Mfr. Part No. 110899 NZMH3-VE630-T
Each
TWD156,975.00(exc. GST)
Better World
ABB S200C MCB, 2P, 20A Curve C, 415V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-1628
  • Mfr. Part No. 2CDS252280R0204
Each
TWD1,401.00(exc. GST)
Eaton MCB, 1P, 4A Curve B, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 248-576
  • Mfr. Part No. 101246 PLI-B4/1
Each
TWD785.00(exc. GST)
Better World
ABB, Tmax XT MCCB 3P 32A, Fixed Mount
  • RS Stock No. 236-6700
  • Mfr. Part No. 1SDA068335R1 XT4H 160 TMD 32A FF
Each
TWD25,239.00(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5148
  • Mfr. Part No. 3VA2125-6HL42-0AA0
Each
TWD41,018.00(exc. GST)
Schneider Electric EasyPact Electronic Circuit Breaker 150A, Plug In
  • RS Stock No. 122-434
  • Mfr. Part No. LV516451P
Each
TWD9,870.00(exc. GST)
Better World
Schneider Electric Acti 9 iC60H MCB, 4P, 20A Curve C, 400V AC, 12 → 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 734-9302
  • Mfr. Part No. A9F87420
Each
TWD10,071.00(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 55 kA
  • RS Stock No. 209-6983
  • Mfr. Part No. 3VA1125-5EE36-0AA0
Each
TWD17,894.00(exc. GST)
ABB System Pro M Compact S300P MCB, 1+N, 10A Curve B, 240V AC, 72V DC, 25 kA Breaking Capacity
  • RS Stock No. 204-466
  • Mfr. Part No. 2CDS381103R0105
Each
TWD8,863.00(exc. GST)
Schneider Electric Canalis 1, 3 Phase Busbar, 230-400V
  • RS Stock No. 212-277
  • Mfr. Part No. KBB40ED42203TW
1 Pack of 6
TWD66,190.00(exc. GST)
1
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