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

1704 of 999+
In Stock
Lovato RCBO, 40A Current Rating, 1P+N Poles, 300mA Trip Sensitivity, Type C, P1 Range
  • RS Stock No. 277-5064
  • Mfr. Part No. P1RE1NC40AC300
Each
TWD3,765.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Busbar Feed Unit, Canalis KBB Series
  • RS Stock No. 211-0377
  • Mfr. Part No. KBB40ABG44TW
Each
TWD5,030.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 50A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 229-878
  • Mfr. Part No. 113358 NZMH2-M50-SVE
Each
TWD24,215.00(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT Conversion Kit for use with Compact NSX 100/160/250
  • RS Stock No. 346-625
  • Mfr. Part No. LV429342T
Each
TWD6,200.00(exc. GST)
Temporarily out of stock
Siemens 5SY41 5SY MCB Mini Circuit Breaker, 3P, 16A, Type A, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 266-9596
  • Mfr. Part No. 5SY4316-5
Each
TWD5,221.00(exc. GST)
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 41 A
  • RS Stock No. 117-788
  • Mfr. Part No. RK 0612 T
Each
TWD2,209.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 50A, Breaking Capacity 7.5 kA, Fixed Mount
  • RS Stock No. 258-443
  • Mfr. Part No. 274239 NZMN1-A50-NA
Each
TWD18,659.00(exc. GST)
Temporarily out of stock
Eaton Eaton Metering Board ZSD Meter Cabinet for use with Metering Board
  • RS Stock No. 239-798
  • Mfr. Part No. 191012 ZSD-ZV-1100-BKE-I/APZ/A
Each
TWD73,832.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 18.5 kA, Plug In
  • RS Stock No. 230-645
  • Mfr. Part No. 112723 NZMB1-M100-SVE
Each
TWD22,031.00(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-555
  • Mfr. Part No. 3VA6210-5KL41-2AA0
Each
TWD139,465.00(exc. GST)
Temporarily out of stock
Eaton RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, Type C, FRBmM Range
  • RS Stock No. 123-663
  • Mfr. Part No. 170798 FRBMM-C16/2/003-LIA
Each
TWD5,416.00(exc. GST)
Temporarily out of stock
Siemens ALPHA Adapter Kit for use with ALPHA 400/630 DIN
  • RS Stock No. 216-4835
  • Mfr. Part No. 8GK9101-5KK01
Each
TWD607.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 70A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 269-654
  • Mfr. Part No. 3VA5270-7ED31-1AA0
Each
TWD42,146.00(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 2P, 10A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 241-206
  • Mfr. Part No. 102227 FAZ-D10/2-RT
Each
TWD6,092.00(exc. GST)
Temporarily out of stock
Eaton BCZ-CS-BO Terminal for use with Distribution Boards
  • RS Stock No. 235-187
  • Mfr. Part No. 103161 BCZ-CS-BO-KL4-V
Each
TWD108.00(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 2A Curve D, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 243-539
  • Mfr. Part No. 102140 FAZ-D2/1-RT
Each
TWD2,962.00(exc. GST)
Temporarily out of stock
Eaton RCCB, 40A, 2 Pole, 300mA, Type S, 230V ac
  • RS Stock No. 227-0720
  • Mfr. Part No. 264285 PFGM-40/2/03-S
Each
TWD11,132.00(exc. GST)
In Stock
Eaton xEffect MCB, 2P, 3A Curve D, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3579
  • Mfr. Part No. 102181 FAZ-D3/2-NA
Each
TWD3,480.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 5SY6 MCB, 1+N, 1.6A Curve C, 5 kA Breaking Capacity
  • RS Stock No. 216-4787
  • Mfr. Part No. 5SY6515-7
Each
TWD2,527.00(exc. GST)
In Stock
RS PRO Thermal Circuit Breaker - Single Pole 250V ac Voltage Rating Plug In, 2A Current Rating
  • RS Stock No. 262-4262
1 Box of 2
TWD1,946.00(exc. GST)
Results per page
1
1704
1794