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

197 of 999+
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7915
  • Mfr. Part No. C25H3TM160
Each
TWD69,538.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Cover Frame for use with 3VA55/65/66
  • RS Stock No. 162-028
  • Mfr. Part No. 3VA9583-0SB10
Each
TWD3,322.00(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT NSX Mechanical Interlock for use with ComPacT NSX100, NSX160, NSX250
  • RS Stock No. 205-210
  • Mfr. Part No. LV429369ET
Each
TWD21,507.00(exc. GST)
Temporarily out of stock
Siemens ALPHA Assembly Kit for use with Unequipped Panel
  • RS Stock No. 629-272
  • Mfr. Part No. 8GK4501-2KK13
Each
TWD3,467.00(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 4P, 1.6A, Type A, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-307
  • Mfr. Part No. 5SY4415-5
Each
TWD9,042.00(exc. GST)
Temporarily out of stock
SENTRON Terminal Cover for use with 3VA52, 3VA61/62 Series
  • RS Stock No. 263-806
  • Mfr. Part No. 3VA9271-0WD40
Each
TWD1,597.00(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-485
  • Mfr. Part No. 3VA6210-5KT41-0AA0
Each
TWD144,982.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 175A, Breaking Capacity 18 kA, Fixed Mount
  • RS Stock No. 147-997
  • Mfr. Part No. 3VA5217-5ED31-1AA0
Each
TWD50,880.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-7925
  • Mfr. Part No. C25H4TM160
Each
TWD90,666.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 600A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 250-109
  • Mfr. Part No. 3VA6560-6HN36-2AA0
Each
TWD177,779.00(exc. GST)
Temporarily out of stock
Eaton, Moeller Series NZM MCCB Molded Case Circuit Breaker 3P
  • RS Stock No. 254-928
  • Mfr. Part No. 259840 NZM2-XR110-130DC
Each
TWD40,920.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 45A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 253-679
  • Mfr. Part No. 269194 NZMH2-AF45-NA
Each
TWD24,253.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 700A, Breaking Capacity 37 kA, Fixed Mount
  • RS Stock No. 258-793
  • Mfr. Part No. 271115 NZMH4-AEF700-NA
Each
TWD197,741.00(exc. GST)
In Stock
Better World
Schneider Electric Compact Nsx, Compact Nsx Dc Plug In Kit for use with Compact Nsx 100/160/250
  • RS Stock No. 221-1181
  • Mfr. Part No. LV429289
Each
TWD13,038.00(exc. GST)
Temporarily out of stock
Hager CDC RCD Switch, 25A, 4 Pole, 30mA, Type AC, 230 → 400V
  • RS Stock No. 599-742
  • Mfr. Part No. CDC427F
Each
TWD9,469.00(exc. GST)
Temporarily out of stock
Eaton Eaton Metering Board ZSD Meter Cabinet for use with Metering Board
  • RS Stock No. 240-888
  • Mfr. Part No. 191010 ZSD-ZZV-1100/APZ
Each
TWD81,495.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 Acti9 iDT40T MCB, 1+N, 16A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 191-6089
  • Mfr. Part No. A9P22616
Each
TWD1,050.00(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 2.5A Curve B, 230V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 259-177
  • Mfr. Part No. 278524 FAZ-B2,5/1
Each
TWD981.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 200A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-293
  • Mfr. Part No. 3VA5220-6GC41-0AA0
Each
TWD75,499.00(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Dip LI, 3 channels
  • RS Stock No. 259-9930
  • Mfr. Part No. 1SDA070791R1
Each
TWD183,082.00(exc. GST)
1
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