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

276 of 999+
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 500A, Breaking Capacity 4 kA, Withdrawable
  • RS Stock No. 229-893
  • Mfr. Part No. 113521 NZMC3-4-A500/320-AVE
Each
TWD145,059.00(exc. GST)
Temporarily out of stock
ABB, T5L MCCB 3P 400A, Fixed Mount
  • RS Stock No. 237-5972
  • Mfr. Part No. 1SDA054536R1 T5L400 FF PR221-I 400A V
Each
TWD111,969.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-7817
  • Mfr. Part No. C16N4TM160
Each
TWD59,210.00(exc. GST)
Temporarily out of stock
Schneider Electric Connection Unit for use with ComPact NS630b → 1600 Circuit Breaker, ComPact NS630b →
  • RS Stock No. 247-1846
  • Mfr. Part No. 33609
Each
TWD5,822.00(exc. GST)
Temporarily out of stock
Siemens Single Phase Industrial Surge Protection, 2A, 230V (Volts), DIN Rail Mount
  • RS Stock No. 266-9586
  • Mfr. Part No. 5SY1708-4
Each
TWD1,409.00(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 10A Curve B, 240V AC, 60V DC, 7.5 kA Breaking Capacity
  • RS Stock No. 255-212
  • Mfr. Part No. 240787 FAZT-B10/1
Each
TWD1,444.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Busbar Feed Unit, Canalis KBB Series
  • RS Stock No. 211-0375
  • Mfr. Part No. KBB40ABD4W
Each
TWD2,508.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Mechanical Interlock
  • RS Stock No. 277-0876
  • Mfr. Part No. 3WA9111-0BB23
1 Set
TWD29,747.00(exc. GST)
Temporarily out of stock
Contactum 12 Way Steel Consumer Unit, 100A Defender
  • RS Stock No. 184-9146
  • Mfr. Part No. DDS12188SPMS
Each
TWD9,387.00(exc. GST)
Temporarily out of stock
Eaton Three Phase Surge Protector, 12.5kA, 1.5kV, DIN Rail Mount
  • RS Stock No. 120-841
  • Mfr. Part No. 158332 SPBT12-280-3+NPE
Each
TWD30,282.00(exc. GST)
Temporarily out of stock
Eaton xEffect RCCB, 40A, 4 Pole, 100mA, Type B, 240V ac
  • RS Stock No. 246-640
  • Mfr. Part No. 187804 FRCMM-40/4/01-B
Each
TWD32,442.00(exc. GST)
Temporarily out of stock
Contactum 14 Way Steel Consumer Unit, 80A Defender
  • RS Stock No. 184-9136
  • Mfr. Part No. DR148MS
Each
TWD4,116.00(exc. GST)
Temporarily out of stock
Contactum 14 Way Steel Consumer Unit, 100A Defender
  • RS Stock No. 184-9128
  • Mfr. Part No. DDS14188MS
Each
TWD6,286.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Horizontal Distribution Busbar Trunking, 2m, 1000A, Canalis KS Series
  • RS Stock No. 211-0447
  • Mfr. Part No. KSA1000ED4206
Each
TWD70,442.00(exc. GST)
In Stock
Eaton xEffect MCB, 1+N, 20A Curve B, 240V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-7061
  • Mfr. Part No. 278649 FAZ-B20/1N
Each
TWD2,369.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 40A 3VA2, 3 channels
  • RS Stock No. 157-106
  • Mfr. Part No. 3VA2140-5HM36-0AA0
Each
TWD43,084.00(exc. GST)
Temporarily out of stock
SENTRON Connection Unit for use with 3VA41 Three 1 Pole 3VA Breakers
  • RS Stock No. 263-887
  • Mfr. Part No. 3VA9033-0LB20
Each
TWD2,073.00(exc. GST)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 2P, 1A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 124-3161
  • Mfr. Part No. 5SY4201-7
Each
TWD4,026.00(exc. GST)
Temporarily out of stock
Schneider Electric, TCE Circuit Breaker Accessory 400 → 600A
  • RS Stock No. 119-382
  • Mfr. Part No. LV833576SP
Each
TWD37,923.00(exc. GST)
Temporarily out of stock
Phoenix Contact 3 Phase Surge Protector, 2kV, DIN Rail Mount
  • RS Stock No. 890-3720
  • Mfr. Part No. 2905469
Each
TWD39,606.00(exc. GST)
1
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