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

1760 of 999+
Temporarily out of stock
Siemens SENTRON 5SJ MCB, 1P, 5A
  • RS Stock No. 232-2225
  • Mfr. Part No. 5SJ4111-7HG42
Each
TWD2,446.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Auxiliary Switch Kit for use with Circuit Breaker 3VA4/5/6
  • RS Stock No. 272-0235
  • Mfr. Part No. 3VA9978-0AA12
Each
TWD1,876.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 IC60L MCB, 2P, 1A, Type Z, 400V AC, 125V DC, 20 kA, 15 kA Breaking Capacity
  • RS Stock No. 212-0119
  • Mfr. Part No. A9F92201
Each (In a Pack of 6)
TWD11,707.00(exc. GST)
In Stock
Hager Incoming Power Terminal for use with KBN663A Busbars, KBN663C Busbars
  • RS Stock No. 144-4694
  • Mfr. Part No. KF83D
Each (In a Pack of 4)
TWD224.00(exc. GST)
Temporarily out of stock
Hager RCBO, 25A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type AC
  • RS Stock No. 602-216
  • Mfr. Part No. ADC725F
Each
TWD8,222.00(exc. GST)
Temporarily out of stock
Eaton PKE Trip Block Electronic Circuit Breaker 65A , 3 channels
  • RS Stock No. 120-669
  • Mfr. Part No. 168798 PKE-XTUCP-65
Each
TWD6,729.00(exc. GST)
Temporarily out of stock
Schneider Electric RCBO, 10A Current Rating, 4P Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 130-444
  • Mfr. Part No. A9D55410
Each
TWD37,196.00(exc. GST)
Temporarily out of stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7278
  • Mfr. Part No. 1SDA067389R1 TMA 225-2250 XT4 3p
Each
TWD17,522.00(exc. GST)
Temporarily out of stock
Eaton Three Phase Surge Protector, 40kA, 1.8kV, DIN Rail Mount
  • RS Stock No. 121-155
  • Mfr. Part No. 167631 SPCT2-385-3+NPE/BB
Each
TWD11,161.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 5kA 1SDA07, 3 channels
  • RS Stock No. 259-3363
  • Mfr. Part No. 1SDA071278R1
Each
TWD1,777,775.00(exc. GST)
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-277
  • Mfr. Part No. KV PC 8104
Each
TWD1,633.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 1.2kA, Breaking Capacity 34 kA, Fixed Mount
  • RS Stock No. 127-817
  • Mfr. Part No. 179327 N4-4-1200-S1-PV-NA
Each
TWD317,221.00(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 Acti9 Reflex MCB, 3P, 10A Curve D, 230V AC, 48V DC, 30 kA Breaking Capacity
  • RS Stock No. 341-546
  • Mfr. Part No. A9C66310
Each
TWD48,861.00(exc. GST)
In Stock
Legrand 13 Way High Impact Polystyrene Consumer Unit, 60A, IP30 Drivia
  • RS Stock No. 786-5627
  • Mfr. Part No. 4 012 11
Each
TWD2,197.00(exc. GST)
In Stock
Legrand DX3 RCCB, 40A, 1+N Pole, 30mA, Type AC
  • RS Stock No. 732-0099
  • Mfr. Part No. 4 116 32
Each
TWD2,656.00(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3P, 16A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 254-653
  • Mfr. Part No. 240915 FAZT-D16/3
Each
TWD7,969.00(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 4P 45A, Breaking Capacity 65 kA, Clip-On
  • RS Stock No. 346-816
  • Mfr. Part No. BJF46045
Each
TWD60,101.00(exc. GST)
Temporarily out of stock
Eaton MCB, 1P, 16A Curve D, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 240-533
  • Mfr. Part No. 101265 PLI-D16/1
Each
TWD1,130.00(exc. GST)
Temporarily out of stock
ABB, Tmax MCCB 4P 320A, Fixed Mount
  • RS Stock No. 237-5957
  • Mfr. Part No. 1SDA054147R1 T4L320 FF PR222-LSI 320A
Each
TWD109,737.00(exc. GST)
Temporarily out of stock
Eaton Eaton xEffect Busbar, 1000 V ac/dc, 1500 V ac/dc
  • RS Stock No. 230-825
  • Mfr. Part No. 119032 CU-BAND5X24X1-BK
1 Pack of 5
TWD33,391.00(exc. GST)
1
1760
1794
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