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

80 of 999+
Eaton xEffect - FBSmV RCCB, 63A, 3 Pole, 30mA, Type A, 240/415V ac
  • RS Stock No. 123-524
  • Mfr. Part No. 170218 FBSMV-63/3/003-A
Each
TWD8,083.00(exc. GST)
Schurter Thermal Circuit Breaker - T11-211 Single Pole 48 V dc, 240V ac Voltage Rating Panel Mount, 3A Current Rating
  • RS Stock No. 868-8778
  • Mfr. Part No. 4400.0010
Each
TWD334.00(exc. GST)
Siemens 400V (Volts) Push Button Circuit Trip for use with Long supply lines
  • RS Stock No. 210-1753
  • Mfr. Part No. 5TE4822
Each
TWD2,729.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 110A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 253-788
  • Mfr. Part No. 269201 NZMH2-AF110-NA
Each
TWD50,843.00(exc. GST)
Better World
Schneider Electric 250V ac Push Button Push Button
  • RS Stock No. 790-9187
  • Mfr. Part No. A9E18038
Each
TWD1,416.00(exc. GST)
Phoenix Contact CAPAROC Electronic Circuit Breaker 20A 12 V, 24 V CAPAROC E1, 1 channels , Plug-On Type E
  • RS Stock No. 498-142
  • Mfr. Part No. 1115663
Each
TWD3,091.00(exc. GST)
Better World
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip Dip LSI, 3 channels
  • RS Stock No. 259-3157
  • Mfr. Part No. 1SDA071012R1
Each
TWD283,403.00(exc. GST)
Better World
Schneider Electric Acti 9 Acti9 iDT40N MCB, 1P, 1A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 191-6103
  • Mfr. Part No. A9P24601
Each
TWD4,003.00(exc. GST)
Phoenix Contact Electronic Device Circuit Breaker Electronic Circuit breaker 4A 24V PTCB, 1 channels , DIN Rail Mount
  • RS Stock No. 207-2795
  • Mfr. Part No. 2908261
Each
TWD1,527.00(exc. GST)
RS PRO MCB, 1P, 16A Curve B, 240 → 415V AC, 6 kA Breaking Capacity
  • RS Stock No. 265-0163
Each
TWD284.00(exc. GST)
Better World
Schneider Electric Multi 9 MCB, 2P, 32A Curve B, 10 kA Breaking Capacity
  • RS Stock No. 219-9112
  • Mfr. Part No. M9F21232
Each
TWD6,956.00(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 20A, Breaking Capacity 25 kA
  • RS Stock No. 209-6768
  • Mfr. Part No. 3VA1120-3EE32-0AA0
Each
TWD13,647.00(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-835
  • Mfr. Part No. 3VA6440-6JQ31-2AA0
Each
TWD221,687.00(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4501
  • Mfr. Part No. 3VA2125-0HM42-0AA0
Each
TWD74,841.00(exc. GST)
Siemens, SENTRON MCCB 4P 250A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 256-504
  • Mfr. Part No. 3VA5325-7EC41-0AA0
Each
TWD109,580.00(exc. GST)
ABB Tmax XT Trip Unit for use with XT4
  • RS Stock No. 236-6876
  • Mfr. Part No. 1SDA100287R1 Ekip LSI 250A XT4 3p
Each
TWD44,978.00(exc. GST)
Better World
Siemens SIRIUS Electronic Circuit Breaker 800mA 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-726
  • Mfr. Part No. 3RV2311-0HC20
Each
TWD3,918.00(exc. GST)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-236
  • Mfr. Part No. 3VA6210-7HL31-0AA0
Each
TWD86,821.00(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 36 kA
  • RS Stock No. 209-6973
  • Mfr. Part No. 3VA1116-4EE42-0AA0
Each
TWD42,180.00(exc. GST)
Eaton Eaton xComfort IKA Distribution Block for use with Installation Distribution Board
  • RS Stock No. 246-618
  • Mfr. Part No. 187357 IKA-C-1/12-ST-LID
Each
TWD5,747.00(exc. GST)
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