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

1749 of 999+
Better World
Siemens SENTRON 5SV6016 Fire Safety Circuit Breaker, 2P, 40A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 187-5260
  • Mfr. Part No. 5SV6016-6KK40
Each
TWD8,208.00(exc. GST)
Siemens, SENTRON MCCB 3P 350A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 256-574
  • Mfr. Part No. 3VA5335-6EF31-0AA0
Each
TWD86,591.00(exc. GST)
Better World
Siemens SENTRON 5SY4 MCB, 4P, 1.6A Curve C, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 212-8884
  • Mfr. Part No. 5SY4415-7
Each
TWD5,880.00(exc. GST)
Better World
Siemens SENTRON 5SY7 MCB, 2P, 13A Curve B, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 209-7540
  • Mfr. Part No. 5SY7213-6
Each
TWD2,879.00(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-3799
  • Mfr. Part No. 3VA2225-6KP32-0AA0
Each
TWD96,135.00(exc. GST)
Eaton xEffect MCB, 3+N, 1.5A Curve B
  • RS Stock No. 230-0866
  • Mfr. Part No. 177447 FAZ6-B1,5/3N
Each
TWD4,140.00(exc. GST)
Hager NEN MCB, 2P, 32A Curve B, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4966
  • Mfr. Part No. NEN232
Each
TWD6,070.00(exc. GST)
Schneider Electric 4 Way Metal Consumer Unit, 100A, IP3x (with cover), IPxx D (on top) EZ9E4
  • RS Stock No. 207-216
  • Mfr. Part No. EZ9E4MCU
Each
TWD3,500.00(exc. GST)
Siemens SENTRON Interlock for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 266-523
  • Mfr. Part No. 3VW9011-0BA22
Each
TWD4,368.00(exc. GST)
Better World
Siemens SENTRON 5SY8 MCB, 2P, 32A Curve C, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 213-1112
  • Mfr. Part No. 5SY8232-7
Each
TWD5,463.00(exc. GST)
ABB SMISSLINE TP MCB, 1P, 25A Curve D, 230V AC
  • RS Stock No. 246-2482
  • Mfr. Part No. 2CCS571001R0251 S401M-D25
Each
TWD1,185.00(exc. GST)
Eaton RCBO, 20A Current Rating, 1P + N Poles, 300mA Trip Sensitivity, Type B, xPole Range
  • RS Stock No. 252-293
  • Mfr. Part No. 193544 PXK-B20/1N/03-F
Each
TWD7,778.00(exc. GST)
ABB MCCB Molded Case Circuit Breaker 3P 320A, Fixed Mount
  • RS Stock No. 250-4096
  • Mfr. Part No. 1SDA054364R1
Each
TWD160,965.00(exc. GST)
Better World
Schneider Electric Acti 9 1 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2761
  • Mfr. Part No. A9XAH257
Each
TWD5,138.00(exc. GST)
ABB RCBO, 40A Current Rating, 3P Poles, Type C
  • RS Stock No. 237-5182
  • Mfr. Part No. 2CSR273101R1404
Each
TWD13,260.00(exc. GST)
Eaton, Eaton Moeller Series NZM MCCB Molded Case Circuit Breaker 3P 320A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 231-229
  • Mfr. Part No. 109694 NZMN3-4-A320
Each
TWD97,357.00(exc. GST)
Schneider Electric, Compact MCCB 4P 1.6kA, Fixed Mount
  • RS Stock No. 247-1774
  • Mfr. Part No. 33314
Each
TWD278,131.00(exc. GST)
Siemens SENTRON Door Sealing Frame for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 266-573
  • Mfr. Part No. 3VW9011-0AP01
Each
TWD5,134.00(exc. GST)
Eaton xEnergy Main Distribution Board
  • RS Stock No. 258-578
  • Mfr. Part No. 284110 XPBMB0612
Each
TWD4,559.00(exc. GST)
Better World
Schneider Electric RCBO, 20A Current Rating, 1P+N Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3347
  • Mfr. Part No. A9DV7620
Each
TWD13,574.00(exc. GST)
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