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

207 of 999+
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 16A Curve D, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3473
  • Mfr. Part No. A9F55116
Each
TWD993.00(exc. GST)
Schneider Electric Resi9 Electronic Circuit Breaker 60A Resi9 DB, DIN Rail Type C
  • RS Stock No. 429-444
  • Mfr. Part No. R9FN660
Each
TWD10,121.00(exc. GST)
Better World
Siemens SENTRON 5SY6 MCB, 1P, 4A Curve B, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 203-2269
  • Mfr. Part No. 5SY6104-6
Each
TWD773.00(exc. GST)
Siemens Sentron Handle Locking Device for use with 5SP, 5SY, 5TE8 Miniature Circuit Breakers, Padlock with Maximum 3 mm
  • RS Stock No. 124-3144
  • Mfr. Part No. 5ST3801
Each
TWD396.00(exc. GST)
Sensata Airpax Airpax Thermal Circuit Breaker - CPP Single Pole Panel Mount, 5A Current Rating
  • RS Stock No. 275-0187
  • Mfr. Part No. CPP11-52-5.00A-OC-V
1 Box of 10
TWD7,922.00(exc. GST)
Phoenix Contact TRABTECH Thermal Circuit Breaker - CB TM1 5A F1 P Single Pole, 5A Current Rating
  • RS Stock No. 768-0937
  • Mfr. Part No. 2800862
Each
TWD1,542.00(exc. GST)
Siemens, SENTRON MCCB 3P 150A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-899
  • Mfr. Part No. 3VA5215-5EC31-2AA0
Each
TWD59,579.00(exc. GST)
ABB S804N MCB, 4P, 13A Curve C, 690V AC, 36 kA Breaking Capacity
  • RS Stock No. 140-573
  • Mfr. Part No. 2CCS894001R0134
Each
TWD26,358.00(exc. GST)
Eaton Assembly Kit for use with N(S)2(-4), NZM2(-4), PN2(-4)
  • RS Stock No. 229-389
  • Mfr. Part No. 116898 NZM2-XHB-DAR-NA
Each
TWD14,138.00(exc. GST)
Sensata Airpax Airpax Thermal Circuit Breaker - IULNK1 Single Pole Panel Mount, 10A Current Rating
  • RS Stock No. 275-0326
  • Mfr. Part No. IULNK1-1-51-10.0
Each
TWD2,631.00(exc. GST)
Better World
Schneider Electric Horizontal Distribution Busbar Trunking, 5m, 630A, Canalis KS Series
  • RS Stock No. 211-0483
  • Mfr. Part No. KSA630ED45018
Each
TWD120,182.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 239-846
  • Mfr. Part No. 191684 NZMH2-4-VX100-SVE
Each
TWD62,299.00(exc. GST)
ABB MCCB Molded Case Circuit Breaker 4P 320A, Fixed Mount
  • RS Stock No. 250-4089
  • Mfr. Part No. 1SDA054358R1
Each
TWD157,835.00(exc. GST)
Better World
Schneider Electric Multi 9 C60N MCB, 3P, 50A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 214-2074
  • Mfr. Part No. M9F11350
Each
TWD10,837.00(exc. GST)
Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 0.001kA, Breaking Capacity 37 kA, Fixed Mount
  • RS Stock No. 255-934
  • Mfr. Part No. 265924 NZMH4-4-AE1000
Each
TWD309,773.00(exc. GST)
Better World
Siemens RCBO, 6A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 225-8816
  • Mfr. Part No. 5SV1316-6LK06
Each
TWD4,646.00(exc. GST)
TE Connectivity Thermal Circuit Breaker - W28 Single Pole 32 V dc, 250V ac Voltage Rating, 4A Current Rating
  • RS Stock No. 782-6597
  • Mfr. Part No. W28-XQ1A-4
Each
TWD145.00(exc. GST)
Better World
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Touch LI, 3 channels
  • RS Stock No. 259-3123
  • Mfr. Part No. 1SDA070974R1
Each
TWD258,100.00(exc. GST)
Better World
ABB, XT4H MCCB 4P 100A, Fixed Mount
  • RS Stock No. 236-6797
  • Mfr. Part No. 1SDA068538R1 XT4H 160 Ekip I 100A FF
Each
TWD45,639.00(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-3762
  • Mfr. Part No. 3VA2025-6HL32-0AA0
Each
TWD27,561.00(exc. GST)
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