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

73 of 999+
Temporarily out of stock
ABB Tmax XT Rotary Handle for use with Tmax XT
  • RS Stock No. 237-6092
  • Mfr. Part No. 1SDA066478R1 RHD_EM XT2-XT4 W
Each
TWD3,889.00(exc. GST)
In Stock
ABB Tmax XT Rotary Handle for use with Tmax XT
  • RS Stock No. 237-6093
  • Mfr. Part No. 1SDA066482R1 RHE_EM XT2-XT4 W
Each
TWD5,115.00(exc. GST)
In Stock
Better World
Siemens SENTRON 5SL6 MCB, 1P, 4A Curve C, 440V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 202-7233
  • Mfr. Part No. 5SL6104-7
Each
TWD687.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 5SL4 MCB, 1P, 500mA Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 209-5960
  • Mfr. Part No. 5SL4105-7
Each
TWD975.00(exc. GST)
In Stock
Better World
Schneider Electric RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 191-6074
  • Mfr. Part No. A9DA2616
Each
TWD6,993.00(exc. GST)
Temporarily out of stock
Eaton Eaton Distribution Parts Undervoltage Release for use with Accessory, Accessory For Miniature Circuit Breaker,
  • RS Stock No. 255-677
  • Mfr. Part No. 248290 Z-USA/400
Each
TWD1,655.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT New generation MCCB 3P 250A, Breaking Capacity 800 → 1000 V, Fixed Mount
  • RS Stock No. 205-226
  • Mfr. Part No. C40K32D250
Each
TWD121,565.00(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller Series NZM Phase Isolator for use with N(S)2, NZM2, PN2
  • RS Stock No. 230-500
  • Mfr. Part No. 119864 NZM2-XKP
Each
TWD720.00(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 3P, 8A Curve D, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 203-887
  • Mfr. Part No. 2CDS273001R0081
Each
TWD14,471.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4110
  • Mfr. Part No. 3VA2116-7KP36-0AA0
Each
TWD96,471.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 80A, Fixed Mount
  • RS Stock No. 260-9513
  • Mfr. Part No. C10N4TM080
Each
TWD35,122.00(exc. GST)
In Stock
TE Connectivity Thermal Magnetic Circuit Breakers - Potter & Brumfield W58 Single Pole 250V ac Voltage Rating Panel
  • RS Stock No. 240-8907
  • Mfr. Part No. 1-1393249-9
Each
TWD261.00(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 106-P30 Single Pole 250V Voltage Rating Panel Mount, 5A Current Rating
  • RS Stock No. 335-968
  • Mfr. Part No. 106-P30-000040-5A
Each
TWD630.00(exc. GST)
Temporarily out of stock
ABB Tmax XT Undervoltage Release for use with Tmax XT
  • RS Stock No. 237-6058
  • Mfr. Part No. 1SDA066394R1 UVR XT1..XT4 480-525VAC
Each
TWD5,591.00(exc. GST)
Temporarily out of stock
Schneider Electric 1 Phase Surge Arrester, 75kA, 600V (Volts), Clip-On Mount
  • RS Stock No. 438-841
  • Mfr. Part No. M9L11120
Each
TWD27,271.00(exc. GST)
In Stock
Better World
Schneider Electric Easypact Cvs100...250, Nsx100...250 Dc, Powerpact Multistandard Front Plate for use with Compact
  • RS Stock No. 221-1192
  • Mfr. Part No. LV429317
Each
TWD1,621.00(exc. GST)
Temporarily out of stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 800A, Fixed Mount
  • RS Stock No. 231-9348
  • Mfr. Part No. 1SDA100718R1 XT6N 800 TMA 800-8000 3pFF
Each
TWD84,425.00(exc. GST)
Temporarily out of stock
ABB Tmax XT Auxiliary Contact for use with Circuit Breaker
  • RS Stock No. 232-0181
  • Mfr. Part No. 1SDA066427R1 AUX-C 3Q 250V GAUCHE XT2-4
Each
TWD4,588.00(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SM6 Fire Safety Circuit Breaker, 1P, 16A, Type A, 16 kA Breaking Capacity
  • RS Stock No. 202-7050
  • Mfr. Part No. 5SM6011-2
Each
TWD5,139.00(exc. GST)
Temporarily out of stock
Eaton RCBO, 20A Current Rating, 2P Poles, 10mA Trip Sensitivity, Type A, Type D, FRBdM Range
  • RS Stock No. 121-274
  • Mfr. Part No. 168262 FRBDM-D20/1N/001-G/A
Each
TWD7,878.00(exc. GST)
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