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

171 of 999+
ABB System Pro M Compact S300P MCB, 1+N, 200mA Curve K, 240V AC, 72V DC, 100 kA Breaking Capacity
  • RS Stock No. 204-465
  • Mfr. Part No. 2CDS381103R0087
Each
TWD9,068.00(exc. GST)
Eaton MSC-DE Electronic Circuit Breaker 32A 24V MSC-DEA, DIN Rail
  • RS Stock No. 120-914
  • Mfr. Part No. 167825 MSC-DEA-32-M32-SP(24VDC)
Each
TWD21,050.00(exc. GST)
Siemens Sentron 5SJ6 MCB, 1P, 16A Curve C, 230V AC, 60V DC, 6 kA Breaking Capacity
  • RS Stock No. 521-4822
  • Mfr. Part No. 5SJ6116-7KS
Each
TWD778.00(exc. GST)
Eaton xEffect FAZ MCB, 3P, 13A Curve B, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 247-882
  • Mfr. Part No. 132722 FAZ-B13/3-NA
Each
TWD6,169.00(exc. GST)
ABB System Pro M Compact S200M MCB, 1+N, 3A Curve C, 230V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 203-835
  • Mfr. Part No. 2CDS271103R0034
Each
TWD5,710.00(exc. GST)
Siemens, SENTRON MCCB 3P 110A, Breaking Capacity 7 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-209
  • Mfr. Part No. 3VA5111-5ED31-0AA0
Each
TWD18,752.00(exc. GST)
Eaton Eaton Moeller Series NZM Terminal Extention for use with N(S)3, NZM3, PN3
  • RS Stock No. 230-847
  • Mfr. Part No. 112884 NZM3-XKV70KB
Each
TWD13,946.00(exc. GST)
Better World
Schneider Electric RCBO, 32A Current Rating, 3P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3342
  • Mfr. Part No. A9DV3732
Each
TWD24,491.00(exc. GST)
Eaton xEffect FAZ MCB, 1P, 20A Curve C, 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 230-896
  • Mfr. Part No. 113763 FAZ-C20/1-NA-DC
Each
TWD4,674.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 700A, Breaking Capacity 37 kA, Fixed Mount
  • RS Stock No. 258-801
  • Mfr. Part No. 271143 NZMH4-VEF700-NA
Each
TWD207,511.00(exc. GST)
ABB PS1 1 Phase Busbar, 400V
  • RS Stock No. 231-9631
  • Mfr. Part No. 2CDL210001R1004 PS1/4
1 Box of 1
TWD119.00(exc. GST)
Siemens ALPHA Assembly Kit for use with 3VL Molded Case Circuit Breakers
  • RS Stock No. 629-226
  • Mfr. Part No. 8GK4722-4KK10
Each
TWD6,370.00(exc. GST)
Siemens SENTRON 4 Phase Busbar
  • RS Stock No. 328-518
  • Mfr. Part No. 5ST2521
Each
TWD5,096.00(exc. GST)
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 231-230
  • Mfr. Part No. 109697 NZMN3-4-A400/250
Each
TWD97,357.00(exc. GST)
ABB SMISSLINE TP MCB, 1P, 2A, Type Z, 220V AC
  • RS Stock No. 246-2455
  • Mfr. Part No. 2CCS561001R1028
Each
TWD3,489.00(exc. GST)
Schurter TA36 Rocker Circuit Breaker - TA36 2 Pole 60 V dc, 277 V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 221-5625
  • Mfr. Part No. 3-128-233
Each
TWD633.00(exc. GST)
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 10A Curve C, 400V AC, 12 → 144V DC, 6 kA Breaking Capacity
  • RS Stock No. 734-9068
  • Mfr. Part No. A9F77210
Each
TWD2,749.00(exc. GST)
Schneider Electric A9R RCCB, 100A, 4 Pole, 415V
  • RS Stock No. 245-095
  • Mfr. Part No. A9R26491
Each
TWD22,038.00(exc. GST)
Eaton xEffect FAZ MCB, 3P, 25A Curve B, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 246-002
  • Mfr. Part No. 132783 FAZ-B25/3-RT
Each
TWD6,858.00(exc. GST)
Siemens, SENTRON MCCB 3P 150A, Breaking Capacity 18 kA, Fixed Mount
  • RS Stock No. 147-906
  • Mfr. Part No. 3VA5215-5ED31-1AA0
Each
TWD49,649.00(exc. GST)
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