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

68 of 999+
ABB SMISSLINE TP MCB, 4P, 16A Curve K, 415V AC
  • RS Stock No. 246-2686
  • Mfr. Part No. 2CCS573103R8467
Each
TWD7,939.00(exc. GST)
Phoenix Contact Thermal Circuit Breaker - TCP 10A Single Pole 65 V dc, 250V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 801-6915
  • Mfr. Part No. 0712314
Each
TWD511.00(exc. GST)
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 4P 400A, Fixed Mount
  • RS Stock No. 231-9342
  • Mfr. Part No. 1SDA100455R1 XT5S400 TMA400-4000 4pFF N
Each
TWD62,608.00(exc. GST)
Eaton Eaton Moeller xEffect Busbar, 24V dc, 17.5mm Pitch
  • RS Stock No. 261-357
  • Mfr. Part No. PXS24BB00012 PXS24-BB/80A/12TE
Each
TWD225.00(exc. GST)
ABB, XT2N MCCB 3P 100A, Fixed Mount
  • RS Stock No. 237-6229
  • Mfr. Part No. 1SDA067062R1 XT2N 160 Ekip I 100A FF
Each
TWD24,598.00(exc. GST)
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7274
  • Mfr. Part No. 1SDA067380R1 TMD 32-320 XT4 3p
Each
TWD17,522.00(exc. GST)
Schneider Electric A9R RCCB, 40A, 2 Pole, 300mA, Type A, 220 → 240V ac
  • RS Stock No. 654-094
  • Mfr. Part No. A9R24240
Each
TWD8,385.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 450A, Breaking Capacity 9 kA, Withdrawable
  • RS Stock No. 230-049
  • Mfr. Part No. 110857 NZMH3-ME450-AVE
Each
TWD134,292.00(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 20A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9814
  • Mfr. Part No. 3VA1120-3GD46-0AA0
Each
TWD18,515.00(exc. GST)
Siemens, SENTRON MCCB 3P 150A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-977
  • Mfr. Part No. 3VA5215-7EF31-0AA0
Each
TWD72,217.00(exc. GST)
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 232-0095
  • Mfr. Part No. 1SDA054437R1 T5N400 FF TMA 400A
Each
TWD35,796.00(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 210-3324
  • Mfr. Part No. 3VA1040-3ED32-0AA0
Each
TWD12,890.00(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-4925
  • Mfr. Part No. 3VA1116-5ED42-0AA0
Each
TWD45,680.00(exc. GST)
Schneider Electric Thermal Circuit Breaker - GB2 2 Pole 277V ac Voltage Rating DIN Rail Mount, 4A Current Rating
  • RS Stock No. 312-3803
  • Mfr. Part No. GB2DB09
Each
TWD1,599.00(exc. GST)
Eaton xEffect FAZ MCB, 2P, 1A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 241-202
  • Mfr. Part No. 102218 FAZ-D1/2-RT
Each
TWD6,705.00(exc. GST)
Eaton Eaton xEnergy Main Busbar Support for use with Busbar
  • RS Stock No. 244-091
  • Mfr. Part No. 133073 XNNS-30X30X1300
1 Pack of 5
TWD25,595.00(exc. GST)
Better World
ABB System Pro M Compact S200 MCB, 3+N, 6A Curve K
  • RS Stock No. 237-3285
  • Mfr. Part No. 2CDS253103R0377
Each
TWD6,330.00(exc. GST)
ABB, XT4N MCCB 4P 200A, Fixed Mount
  • RS Stock No. 236-6593
  • Mfr. Part No. 1SDA068104R1 XT4N 250 TMA 200A 3P+N FF
Each
TWD33,707.00(exc. GST)
Better World
Siemens Surge Protector, 70 V dc, 127V ac, Clip-On Mount
  • RS Stock No. 122-9477
  • Mfr. Part No. 3RT2916-1JK00
Each
TWD996.00(exc. GST)
Mersen Surge Protector
  • RS Stock No. 251-3642
  • Mfr. Part No. 83120244 / STPT12-5K680V-3P-RM
Each
TWD29,445.00(exc. GST)
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