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

141 of 999+
In Stock
ABB System Pro M Compact S200 MCB, 3P, 100A Curve C, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 231-9682
  • Mfr. Part No. 2CDS253001R0824 S203-C100 6kA 100A
1 Box of 1
TWD6,682.00(exc. GST)
In Stock
Better World
Siemens 5SV3 RCCB, 40A, 4 Pole, 100mA, Type A
  • RS Stock No. 124-7736
  • Mfr. Part No. 5SV3444-6
Each
TWD5,275.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 1.6kA, Breaking Capacity 37 kA, Fixed Mount
  • RS Stock No. 253-625
  • Mfr. Part No. 265997 NZMH4-4-VE1600/1000
Each
TWD533,453.00(exc. GST)
Temporarily out of stock
SENTRON Cover Frame for use with 3VA52 Series
  • RS Stock No. 263-877
  • Mfr. Part No. 3VA9234-0SB20
Each
TWD2,437.00(exc. GST)
In Stock
Schneider Electric 100V ac Shunt Trip Circuit Trip for use with IC60, IID, ISW-NA
  • RS Stock No. 734-9021
  • Mfr. Part No. A9A26946
Each
TWD4,095.00(exc. GST)
In Stock
Phoenix Contact CAPAROC Busbar
  • RS Stock No. 265-8973
  • Mfr. Part No. 1110990
Each
TWD637.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON for use with 3VA1 and 3VA20 up → 3VA25
  • RS Stock No. 210-9429
  • Mfr. Part No. 3VA9988-0BL32
Each
TWD5,675.00(exc. GST)
In Stock
Schneider Electric R9F RCCB, 60A, 1 Pole, 500mA, Type A, 250V ac
  • RS Stock No. 276-8944
  • Mfr. Part No. R9FS660
Each
TWD9,162.00(exc. GST)
Temporarily out of stock
Siemens SENTRON for use with 3VA2 100/160/250
  • RS Stock No. 210-3518
  • Mfr. Part No. 3VA9201-0QE20
Each
TWD1,609.00(exc. GST)
In Stock
Eaton MCCB 3P 63A, Breaking Capacity 80 kA, Fixed Mount
  • RS Stock No. 628-8048
  • Mfr. Part No. 259140 PN1-63
1 Box of 1
TWD7,828.00(exc. GST)
Temporarily out of stock
Eaton Eaton xEnergy Main Busbar Support for use with Busbar
  • RS Stock No. 258-890
  • Mfr. Part No. 284749 XBSN32
Each
TWD2,824.00(exc. GST)
In Stock
RS PRO MCB, 2P, 16A Curve B, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0160
Each
TWD729.00(exc. GST)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 629-345
  • Mfr. Part No. 8GK1383-1KK15
Each
TWD20,976.00(exc. GST)
Temporarily out of stock
Hager HMC MCB, 2P, 80A, 400V AC, 15 Breaking Capacity
  • RS Stock No. 602-110
  • Mfr. Part No. HMC280
Each
TWD14,093.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 Cable for use with Acti 9, Acti 9 Smartlink Circuit Breaker
  • RS Stock No. 125-1395
  • Mfr. Part No. A9XCAU06
Each
TWD2,295.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 210-1734
  • Mfr. Part No. 3VA2325-6KP32-0AA0
Each
TWD114,742.00(exc. GST)
In Stock
Better World
Siemens SENTRON 5SY6 MCB, 1P, 5A Curve C, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 203-2345
  • Mfr. Part No. 5SY6111-7
Each
TWD792.00(exc. GST)
In Stock
Lovato P1 MCB, 1+N, 4A Curve C, 230V AC
  • RS Stock No. 248-5615
  • Mfr. Part No. P1MB1MC04
Each
TWD2,056.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 A9N1 MCB, 2P, 80A Curve D
  • RS Stock No. 221-0888
  • Mfr. Part No. A9N18501
Each
TWD10,450.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 C120H MCB, 4P, 100A Curve C, 440V AC, 500V DC, 15 kA, 30 kA Breaking Capacity
  • RS Stock No. 776-3032
  • Mfr. Part No. A9N18480
Each
TWD21,392.00(exc. GST)
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