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

235 of 999+
Temporarily out of stock
Siemens, SENTRON MCCB 2P 60A, Breaking Capacity 14 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-681
  • Mfr. Part No. 3VA5160-4ED21-1AA0
Each
TWD13,910.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 1kA, Breaking Capacity 55 kA, DIN Rail Mount
  • RS Stock No. 271-9502
  • Mfr. Part No. 3VA1510-5EF32-0AA0
Each
TWD180,078.00(exc. GST)
Temporarily out of stock
Siemens ALPHA Assembly Kit for use with 3VA2 Molded Case Circuit Breakers
  • RS Stock No. 629-395
  • Mfr. Part No. 8GK4736-2KK12
Each
TWD5,674.00(exc. GST)
Temporarily out of stock
Phoenix Contact Electronic Circuit Breaker 55A 24V 1368, DIN Rail
  • RS Stock No. 519-867
  • Mfr. Part No. 1368127
Each
TWD43,965.00(exc. GST)
Temporarily out of stock
Legrand RCD Switch, 10A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, DX Range
  • RS Stock No. 731-9884
  • Mfr. Part No. 4 107 84
Each
TWD15,332.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4627
  • Mfr. Part No. 3VA2140-6HM32-0AA0
Each
TWD45,794.00(exc. GST)
In Stock
ABB SMISSLINE TP S400M MCB, 2P, 16A Curve C, 12V AC, 12V DC, 25 kA Breaking Capacity
  • RS Stock No. 231-9560
  • Mfr. Part No. 2CCS571103R8164 S401M-C16NP
Each
TWD2,490.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Busbar Trunking End Cover, Canalis KBA Series
  • RS Stock No. 219-8920
  • Mfr. Part No. KSA400AF1
Each
TWD3,628.00(exc. GST)
In Stock
Better World
Schneider Electric Compact Ins, Compact Inv, Compact Nsx Spreader for use with Compact Nsx 100/160/250
  • RS Stock No. 221-1221
  • Mfr. Part No. LV431061
Each
TWD7,500.00(exc. GST)
New product - Preorder today
Schneider Electric Resi9 MCB, 3P, 16A Curve B, 400V AC, 6000 A Breaking Capacity
  • RS Stock No. 654-661
  • Mfr. Part No. R9F23316
Each
TWD2,639.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 32A, Breaking Capacity 7.5 kA, Fixed Mount
  • RS Stock No. 257-084
  • Mfr. Part No. 281572 NZMN1-A32-NA
Each
TWD18,659.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-267
  • Mfr. Part No. 3VA6460-5HM41-0AA0
Each
TWD177,779.00(exc. GST)
Temporarily out of stock
Eaton Eaton Metering Board ZSD Meter Cabinet for use with Metering Board
  • RS Stock No. 246-832
  • Mfr. Part No. 191007 ZSD-ZV-1100/APZ
Each
TWD56,744.00(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 20A Curve C
  • RS Stock No. 231-9662
  • Mfr. Part No. 2CDS251001R0204 S201 C 20A - 10 KA
1 Box of 1
TWD669.00(exc. GST)
Temporarily out of stock
ABB SU200 M MCB, 4P, 1.6A, Type Z, 480V AC, 15 kA Breaking Capacity
  • RS Stock No. 201-119
  • Mfr. Part No. 2CDS274337R0258
Each
TWD21,512.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric, Masterpact MCCB 3P 4kA, Fixed Mount
  • RS Stock No. 248-3816
  • Mfr. Part No. LV848323
Each
TWD1,795,299.00(exc. GST)
Temporarily out of stock
HENSEL ENYSUN Distribution Board
  • RS Stock No. 116-957
  • Mfr. Part No. AS 18
Each
TWD234.00(exc. GST)
In Stock
Better World
Schneider Electric, Acti 9, 63A, Energy Sensor, 1VA, Wireless
  • RS Stock No. 134-8659
  • Mfr. Part No. A9MEM1521
Each
TWD4,816.00(exc. GST)
Temporarily out of stock
ABB Tmax XT Conversion Kit for use with Tmax XT
  • RS Stock No. 237-6037
  • Mfr. Part No. 1SDA066282R1 P MP XT4 3P
Each
TWD2,440.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 30A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-342
  • Mfr. Part No. 3VA5130-6ED31-0AA0
Each
TWD15,756.00(exc. GST)
1
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