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

279 of 999+
Temporarily out of stock
ABB SU200 M MCB, 1P, 1A Curve K, 277V AC, 48V DC, 15 kA Breaking Capacity
  • RS Stock No. 201-148
  • Mfr. Part No. 2CDS271337R0217
Each
TWD4,015.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Hi-Touch LSI, 4 channels
  • RS Stock No. 259-4542
  • Mfr. Part No. 1SDA072778R1
Each
TWD317,043.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 50A, Fixed Mount
  • RS Stock No. 260-9496
  • Mfr. Part No. C10N3MA050
Each
TWD23,215.00(exc. GST)
Temporarily out of stock
ABB Cover for use with SACE Tmax XT
  • RS Stock No. 192-0925
  • Mfr. Part No. 1SDA066664R1
Each
TWD1,691.00(exc. GST)
Temporarily out of stock
Eaton ZSD-K29 Distribution Board
  • RS Stock No. 127-347
  • Mfr. Part No. 183257 ZSD-K29
Each
TWD13,048.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 20A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS Stock No. 258-286
  • Mfr. Part No. 281237 NZMB1-4-A20
Each
TWD17,242.00(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 2P 40A, Breaking Capacity 35 kA, Clip-On
  • RS Stock No. 346-796
  • Mfr. Part No. BGF26040
Each
TWD26,251.00(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 125A, Plug In
  • RS Stock No. 122-440
  • Mfr. Part No. LV516462P
Each
TWD6,852.00(exc. GST)
New product - Preorder today
Schneider Electric R9R RCCB, 40A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 654-662
  • Mfr. Part No. R9R22240
Each
TWD3,825.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 16A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9473
  • Mfr. Part No. 3VA1196-6GE42-0AA0
Each
TWD18,768.00(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 3P 250A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 357-932
  • Mfr. Part No. NLDL36250U31X
Each
TWD269,288.00(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 1kA, Breaking Capacity 35 kA
  • RS Stock No. 249-183
  • Mfr. Part No. 3VA6610-7JT32-0AA0
Each
TWD383,145.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 63A, Fixed Mount
  • RS Stock No. 260-7622
  • Mfr. Part No. C11H3TM063B
Each
TWD26,559.00(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 3 channels
  • RS Stock No. 259-9905
  • Mfr. Part No. 1SDA070751R1
Each
TWD170,429.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Interlock Kit for use with 3VA12
  • RS Stock No. 152-781
  • Mfr. Part No. 3VA9257-0VF10
Each
TWD3,516.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3791
  • Mfr. Part No. 3VA2163-5HL46-0AA0
Each
TWD34,965.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 5SY5 MCB, 1P, 50A Curve C, 400V AC, 220V DC, 10 kA Breaking Capacity
  • RS Stock No. 212-8956
  • Mfr. Part No. 5SY5150-7
Each
TWD4,325.00(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-397
  • Mfr. Part No. 3VA6140-8HL41-2AA0
Each
TWD57,855.00(exc. GST)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - LELBXK11 2 Pole Panel Mount, 35A Current Rating
  • RS Stock No. 275-0363
  • Mfr. Part No. LELBXK11-1-62-35.0-Z-M6-V
Each
TWD5,247.00(exc. GST)
In Stock
Europa EUC1P EUB MCB, 1P, 6A Curve B, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6465
  • Mfr. Part No. EUC1P6B
Each
TWD428.00(exc. GST)
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