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

225 of 999+
Temporarily out of stock
Eaton NZMH3 Electronic Circuit Breaker 400A 70V NZM, 3 channels , Fixed
  • RS Stock No. 120-676
  • Mfr. Part No. 168918 NZMH3-S400-SVE
Each
TWD111,731.00(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
Siemens SENTRON Wire Connector for use with 3VA15/25 1000
  • RS Stock No. 269-7234
  • Mfr. Part No. 3VA9604-0JC44
Each (In a Pack of 4)
TWD8,382.50(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
Better World
Siemens RCBO, 25A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type AC, Sentron Range
  • RS Stock No. 196-3616
  • Mfr. Part No. 5SV43120KL
Each
TWD3,865.00(exc. GST)
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-438
  • Mfr. Part No. KV 1712
Each
TWD4,073.00(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)
Temporarily out of stock
Schneider Electric Acti9 1 Phase Distribution Board, 18 Way, 125 A
  • RS Stock No. 339-613
  • Mfr. Part No. SEA9APN1016MS
Each
TWD12,847.00(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200M MCB, 2P, 1A Curve D, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 746-8166
  • Mfr. Part No. 2CDS272001R0011 S202M-D1
Each
TWD2,221.00(exc. GST)
Temporarily out of stock
Eaton xEffect - FBSmV RCCB, 40A, 3 Pole, Type A, 240/415V ac
  • RS Stock No. 123-533
  • Mfr. Part No. 170225 FBSMV-40/3/1-A
Each
TWD9,519.00(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
Better World
Schneider Electric 12 → 24V ac/dc Shunt Trip Shunt trip for use with ARA, ic60 MCB, IDPN Vigi, ild Double
  • RS Stock No. 791-2818
  • Mfr. Part No. A9A26478
Each
TWD2,617.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 140A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 243-041
  • Mfr. Part No. 191623 NZMN2-MX140-SVE
Each
TWD49,809.00(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
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 40A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9311
  • Mfr. Part No. 3VA1140-3ED22-0AA0
Each
TWD11,626.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 320A, Fixed Mount
  • RS Stock No. 260-8159
  • Mfr. Part No. C40V36M320
Each
TWD207,206.00(exc. GST)
1
225
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