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

230 of 999+
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA5/6 400/600
  • RS Stock No. 269-7179
  • Mfr. Part No. 3VA9373-0JG13
Each (In a Pack of 3)
TWD3,234.70(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 Acti9 iDT40T MCB, 3P, 40A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 191-6100
  • Mfr. Part No. A9P22740
Each
TWD7,572.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 800A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 250-099
  • Mfr. Part No. 3VA6580-5JQ36-0AA0
Each
TWD276,631.00(exc. GST)
In Stock
ABB Tmax Undervoltage Release for use with Tmax T
  • RS Stock No. 237-6008
  • Mfr. Part No. 1SDA062087R1 UVR T7-M-X1 24VAC/DC
Each
TWD7,062.00(exc. GST)
Temporarily out of stock
Socomec 1509 Spacer for use with ATyS Transfer Switches
  • RS Stock No. 252-3413
  • Mfr. Part No. 15090001
Each
TWD2,184.00(exc. GST)
In Stock
ETA REX12 Electronic Circuit breaker 2A 24V REX12-T, DIN Rail Mount
  • RS Stock No. 175-0371
  • Mfr. Part No. REX12-TA2-107-DC24V-2A/2A
Each
TWD1,892.00(exc. GST)
Temporarily out of stock
ALPHA 630 DIN, Abdeckung Höhe=450mm, Bre
  • RS Stock No. 229-9882
  • Mfr. Part No. 8GK9601-3KK31
Each (In a Pack of 10)
TWD6,664.30(exc. GST)
Temporarily out of stock
Schneider Electric A9R RCCB, 40A, 4 Pole, 300mA, Type A, 415V ac
  • RS Stock No. 335-373
  • Mfr. Part No. A9R25440
Each
TWD15,838.00(exc. GST)
In Stock
Siemens ALPHA Blanking Strip for use with SIMBOX Small Distribution Board
  • RS Stock No. 213-2462
  • Mfr. Part No. 8GB4683
Each (In a Pack of 10)
TWD178.90(exc. GST)
Temporarily out of stock
Eaton Terminal for use with INX16…W, INX40…W, IZMX16…W, IZMX40…W
  • RS Stock No. 246-517
  • Mfr. Part No. 184242 IZMX-SEC-TB2-W-1
Each
TWD3,199.00(exc. GST)
Temporarily out of stock
Better World
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 232-0271
  • Mfr. Part No. 1SDA068126R1 XT4N 250 Ekip LS/I 250A FF
Each
TWD39,387.00(exc. GST)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 2P, 16A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1313
  • Mfr. Part No. 5SY4216-8
Each
TWD2,573.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric iID RCCB, 100A, 4 Pole, 30mA, Type AC, 415V ac
  • RS Stock No. 248-3694
  • Mfr. Part No. A9R11491
Each
TWD27,008.00(exc. GST)
Temporarily out of stock
Contactum 14 Way Steel Consumer Unit, 100A Defender
  • RS Stock No. 184-9129
  • Mfr. Part No. DDS14188MS-P01
Each
TWD8,093.00(exc. GST)
Temporarily out of stock
Hager RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type F
  • RS Stock No. 602-091
  • Mfr. Part No. ADF916F
Each
TWD14,525.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 3 Phase Distribution Board, 8 Way, 250 A
  • RS Stock No. 125-1413
  • Mfr. Part No. SEA9BN8PEV
Each
TWD10,970.00(exc. GST)
In Stock
Better World
Schneider Electric RCBO, 10A Current Rating, 1P+N Poles, Type AB, Easy9 Range
  • RS Stock No. 850-8644
  • Mfr. Part No. EZ9D16810
Each
TWD1,562.00(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 1P, 32A Curve K, 230/400V AC, 72V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-016
  • Mfr. Part No. 2CDS271001R0537
Each
TWD4,324.00(exc. GST)
Temporarily out of stock
Sensata Airpax Airpax Thermal Circuit Breaker - PR11 Single Pole Panel Mount, 5A Current Rating
  • RS Stock No. 275-0437
  • Mfr. Part No. PR11-62-5.00A-XX-V
Each
TWD643.00(exc. GST)
In Stock
Eaton Electronic Circuit breaker 4A
  • RS Stock No. 774-0174
  • Mfr. Part No. 121724 PKE-XTU-4
Each
TWD4,450.00(exc. GST)
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