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

69 of 999+
Temporarily out of stock
Siemens Labelling Plate for use with PT Relais
  • RS Stock No. 266-9622
  • Mfr. Part No. LZS:PT17040
Each (In a Pack of 10)
TWD18.60(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Terminal for use with 3VA5/6
  • RS Stock No. 272-0227
  • Mfr. Part No. 3VA9473-0JA13
Each
TWD8,293.00(exc. GST)
In Stock
Phoenix Contact 3 Phase Surge Protector, ≤2.5kV, DIN Rail Mount
  • RS Stock No. 890-3718
  • Mfr. Part No. 2905988
Each
TWD31,423.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 210-1721
  • Mfr. Part No. 3VA2116-6HL36-0AA0
Each
TWD55,299.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-4861
  • Mfr. Part No. 3VA1110-5EE32-0AA0
Each
TWD20,702.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric, PowerPact MCCB Molded Case Circuit Breaker 3P 50A
  • RS Stock No. 221-0896
  • Mfr. Part No. BDL36050LU
Each
TWD23,910.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 85 kA
  • RS Stock No. 209-7071
  • Mfr. Part No. 3VA2140-6KP32-0AA0
Each
TWD70,805.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9316
  • Mfr. Part No. 3VA1140-3GE42-0AA0
Each
TWD17,043.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 50A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3739
  • Mfr. Part No. 3VA1150-5EF46-0AA0
Each
TWD23,277.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9317
  • Mfr. Part No. 3VA1140-3GE46-0AA0
Each
TWD18,957.00(exc. GST)
Temporarily out of stock
Eaton Eaton xEnergy Main Base for use with Busbar
  • RS Stock No. 244-738
  • Mfr. Part No. 144595 XBSB-B-STS
1 Pack of 10
TWD32,462.00(exc. GST)
In Stock
RS PRO 3 Phase Industrial Surge Protector, 140kA, 2.5kV, DIN Rail Mount
  • RS Stock No. 101-770
Each
TWD28,147.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4585
  • Mfr. Part No. 3VA2125-7MP32-0AA0
Each
TWD46,992.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 20A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 271-9821
  • Mfr. Part No. 3VA1120-4ED46-0AA0
Each
TWD19,963.00(exc. GST)
Temporarily out of stock
Hager CPC RCD Switch, 63A, 4 Pole, 300mA, Type AC, 230 → 400V
  • RS Stock No. 599-858
  • Mfr. Part No. CPC863F
Each
TWD18,084.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5174
  • Mfr. Part No. 3VA2163-6HL32-0AA0
Each
TWD32,545.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 85 kA
  • RS Stock No. 209-6915
  • Mfr. Part No. 3VA2116-6HN32-0AA0
Each
TWD54,586.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller Series NZM MCCB Molded Case Circuit Breaker 3P 12A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 248-464
  • Mfr. Part No. 103042 NZMN2-S12-CNA
Each
TWD23,372.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4756
  • Mfr. Part No. 3VA2163-7KP32-0AA0
Each
TWD73,443.00(exc. GST)
Temporarily out of stock
Better World
Siemens, 0AA0 MCCB 4P 25A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-6005
  • Mfr. Part No. 3VA1125-5EF42-0AA0
Each
TWD22,387.00(exc. GST)
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