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

205 of 999+
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 800A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 250-091
  • Mfr. Part No. 3VA6580-5HM36-2AA0
Each
TWD224,523.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Mounting Adapter for use with Circuit Breaker 3VA1
  • RS Stock No. 272-0212
  • Mfr. Part No. 3VA9257-0GX01
Each
TWD773.00(exc. GST)
Temporarily out of stock
Eaton NZM Circuit Breaker for use with Circuit Breaker
  • RS Stock No. 242-928
  • Mfr. Part No. 192320 NZMH3-4-PX400/VAR-TAZ-AVE
Each
TWD280,116.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 25A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 271-9572
  • Mfr. Part No. 3VA10252ED460AA0
Each
TWD17,488.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 9 kA, Fixed Mount
  • RS Stock No. 259-638
  • Mfr. Part No. 269336 NZMH3-VE400-NA
Each
TWD128,162.00(exc. GST)
Temporarily out of stock
Legrand DX Range DX3 MCB, 2P, 3A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 731-9705
  • Mfr. Part No. 4 077 78
Each
TWD6,187.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9706
  • Mfr. Part No. 3VA11123GE460AA0
Each
TWD35,147.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 Spring Connector for use with Acti 9, Acti 9 Smartlink, IACT 24, IATL 24, IOF+SD 24, OF+SD
  • RS Stock No. 205-2813
  • Mfr. Part No. A9XC2412
1 Bag of 12
TWD558.00(exc. GST)
In Stock
ABB Tmax T Undervoltage Release for use with MCCB
  • RS Stock No. 232-0110
  • Mfr. Part No. 1SDA054887R1 UVR-C 24VAC/DC T4-6
Each
TWD5,902.00(exc. GST)
In Stock
Siemens Sentron Trip alarm switch for use with 3VA Series Circuit Breaker
  • RS Stock No. 874-4515
  • Mfr. Part No. 3VA9988-0AB12
Each
TWD1,261.00(exc. GST)
Temporarily out of stock
Schneider Electric RCBO, 16A Current Rating, 1P Poles, Type C, Acti9 Range
  • RS Stock No. 207-392
  • Mfr. Part No. A9D01816
Each
TWD8,402.00(exc. GST)
In Stock
Lovato ModuLo P1MB MCB, 2P, 25A Curve C, 230V AC, 80V DC, 10 kA Breaking Capacity
  • RS Stock No. 825-5722
  • Mfr. Part No. P1MB2PC25
Each
TWD1,563.00(exc. GST)
Temporarily out of stock
Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS Stock No. 256-068
  • Mfr. Part No. 265799 NZMB1-4-A40
Each
TWD17,242.00(exc. GST)
In Stock
Siemens Cover for use with SIRIUS 3RM1 Busbar
  • RS Stock No. 783-9259
  • Mfr. Part No. 3RM1910-6AA
Each
TWD106.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 125A, Fixed Mount
  • RS Stock No. 260-7679
  • Mfr. Part No. C12E3TM125B
Each
TWD19,962.00(exc. GST)
Temporarily out of stock
Better World
ABB, XT2V MCCB 4P 125A, Fixed Mount
  • RS Stock No. 236-7450
  • Mfr. Part No. 1SDA067712R1 XT2V 160 TMA 125A 3P+N FF
Each
TWD45,331.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Auxiliary Contact for use with 3VA4/5/6
  • RS Stock No. 272-0236
  • Mfr. Part No. 3VA9978-0AA13
Each
TWD2,811.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Extension Set 6 Jumper Connection for use with LTME, LTMR
  • RS Stock No. 917-6421
  • Mfr. Part No. LTMCC004
Each (In a Pack of 6)
TWD639.00(exc. GST)
In Stock
Schurter Thermal Magnetic Circuit Breaker - Single Pole 48 V dc, 240V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 539-3745
  • Mfr. Part No. 4404.0004
Each
TWD114.00(exc. GST)
Temporarily out of stock
ABB S803S MCB, 3P, 63A, KM, 690V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-712
  • Mfr. Part No. 2CCS863001R0596
Each
TWD32,218.00(exc. GST)
1
205
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