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

1690 of 999+
Better World
Siemens SENTRON 5SY7 MCB, 4P, 32A Curve C, 400V AC, 72V DC, 15 kA Breaking Capacity
  • RS Stock No. 209-6049
  • Mfr. Part No. 5SY7432-7
Each
TWD9,409.00(exc. GST)
Eaton NZM Electronic Circuit Breaker 80A , 4 channels , Fixed
  • RS Stock No. 120-165
  • Mfr. Part No. 153394 NZMH2-4-AF80-BT-NA
Each
TWD62,123.00(exc. GST)
Better World
Schneider Electric Acti 9 iC60L MCB, 2P, 25A Curve C, 15 kA Breaking Capacity
  • RS Stock No. 219-9278
  • Mfr. Part No. A9F94225
Each
TWD6,127.00(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3714
  • Mfr. Part No. 3VA2025-8JQ42-0AA0
Each
TWD91,434.00(exc. GST)
ABB Tmax XT Front Terminal for use with Tmax XT
  • RS Stock No. 237-6262
  • Mfr. Part No. 1SDA067174R1 FC CuAl 1x240 XT2 8PCS+ADP
Each
TWD16,160.00(exc. GST)
ABB S800S MCB, 4P, 16A Curve D, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-268
  • Mfr. Part No. 2CCS864001R0161
Each
TWD36,169.00(exc. GST)
Better World
ABB, Tmax XT MCCB 3P 52A, Fixed Mount
  • RS Stock No. 236-6491
  • Mfr. Part No. 1SDA067945R1 XT2L 160 Ekip M 52A FF
Each
TWD46,952.00(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4768
  • Mfr. Part No. 3VA2163-7MQ32-0AA0
Each
TWD63,472.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 125A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 230-385
  • Mfr. Part No. 113345 NZMH2-S125-SVE
Each
TWD42,951.00(exc. GST)
Phoenix Contact Trabtech Thermal Circuit Breaker - CB TM1 Single Pole 50V dc Voltage Rating, 16A Current Rating
  • RS Stock No. 201-5504
  • Mfr. Part No. 2800856
Each
TWD1,542.00(exc. GST)
Siemens SENTRON 2 Phase Busbar, 27mm Pitch
  • RS Stock No. 187-5174
  • Mfr. Part No. 5ST3635
Each
TWD382.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 125A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 230-390
  • Mfr. Part No. 113362 NZMH2-M125-SVE
Each
TWD45,901.00(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4527
  • Mfr. Part No. 3VA2125-6HK42-0AA0
Each
TWD41,094.00(exc. GST)
Sensata Airpax Airpax Thermal Circuit Breaker - AP7 Single Pole Panel Mount, 1A Current Rating
  • RS Stock No. 275-0179
  • Mfr. Part No. AP7-1-61-102
1 Box of 5
TWD53,238.00(exc. GST)
ABB RCCB, 6A, 4 Pole, 30mA, Type B, 415V ac
  • RS Stock No. 246-2418
  • Mfr. Part No. 2CCG001711R0001
Each
TWD14,830.00(exc. GST)
Eaton xEffect FAZ MCB, 2P, 3.5A Curve B, 400V AC, 96V DC, 10 kA Breaking Capacity
  • RS Stock No. 259-604
  • Mfr. Part No. 278725 FAZ-B3,5/2
Each
TWD3,521.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS Stock No. 229-607
  • Mfr. Part No. 107663 NZMB2-S100-BT-CNA
Each
TWD26,245.00(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4531
  • Mfr. Part No. 3VA2125-6HM36-0AA0
Each
TWD47,104.00(exc. GST)
ABB Tmax XT Shunt Opening Release for use with Circuit Breaker
  • RS Stock No. 231-9364
  • Mfr. Part No. 1SDA104925R1 YO XT5-XT6 24...60 Vac/dc
Each
TWD3,919.00(exc. GST)
Siemens SIVACON Busbar, 40mm Pitch
  • RS Stock No. 626-473
  • Mfr. Part No. 8PQ4000-0BA27
Each
TWD57,473.00(exc. GST)
Results per page
1
1690
1794