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

1650 of 999+
Temporarily out of stock
Eaton xEffect FAZ MCB, 1+N, 4A Curve D, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 256-214
  • Mfr. Part No. 241053 FAZT-D4/1N
Each
TWD3,828.00(exc. GST)
Temporarily out of stock
ABB Plastic Consumer Unit, IP65 1SLM006501A
  • RS Stock No. 286-4978
  • Mfr. Part No. 1SLM006501A2213
Each
TWD2,196.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 5SY6 MCB, 1+N, 20A Curve B, 230V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 209-7530
  • Mfr. Part No. 5SY6520-6
Each
TWD2,059.00(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 3600 Single Pole 250V Voltage Rating Panel Mount, 2A Current Rating
  • RS Stock No. 729-2837
  • Mfr. Part No. 3600-P10-Si-2A
Each
TWD3,309.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 242-978
  • Mfr. Part No. 189599 NZMN3-A400-S07-DC
Each
TWD81,725.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 110A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-189
  • Mfr. Part No. 3VA5111-4ED21-0AA0
Each
TWD17,193.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3673
  • Mfr. Part No. 3VA2025-7HN32-0AA0
Each
TWD76,951.00(exc. GST)
Temporarily out of stock
Circuit Breaker,32 A,3 + N
  • RS Stock No. 611-286
  • Mfr. Part No. PLSM-C32/3N-MW
Each
TWD4,063.00(exc. GST)
In Stock
Better World
Schneider Electric Busbar Tap-Off Unit, Canalis KS Series
  • RS Stock No. 211-0505
  • Mfr. Part No. KSB32CP11D
Each
TWD5,969.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 4 channels
  • RS Stock No. 156-828
  • Mfr. Part No. 3VA2216-5HM42-0AA0
Each
TWD93,554.00(exc. GST)
Temporarily out of stock
Sensata Airpax Airpax Thermal Circuit Breaker - M39019 Single Pole Panel Mount, 15A Current Rating
  • RS Stock No. 275-0423
  • Mfr. Part No. M39019/02-255
Each
TWD32,406.00(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 1+N, 16A, Type Z, 240V AC, 72V DC, 25 kA Breaking Capacity
  • RS Stock No. 200-891
  • Mfr. Part No. 2CDS381103R0468
Each
TWD7,099.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 500A 3VA2, 4 channels
  • RS Stock No. 155-906
  • Mfr. Part No. 3VA2450-6KQ42-0AA0
Each
TWD213,368.00(exc. GST)
Temporarily out of stock
xEffect MCB, 3P, 63A Curve D, 400V AC, 60V DC, 25 kA Breaking Capacity
  • RS Stock No. 252-938
  • Mfr. Part No. 211820 AZ-3-D63
Each
TWD17,318.00(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 13A Curve C, 230V AC, 60V DC, 7.5 kA Breaking Capacity
  • RS Stock No. 254-981
  • Mfr. Part No. 240805 FAZT-C13/1
Each
TWD2,034.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 7.5 kA, Fixed Mount
  • RS Stock No. 258-285
  • Mfr. Part No. 281234 NZMN1-A160
Each
TWD34,560.00(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 80A, Fixed Mount
  • RS Stock No. 260-7581
  • Mfr. Part No. C11E4TM080L
Each
TWD22,392.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 5SY7 MCB, 2P, 20A Curve B, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 209-7542
  • Mfr. Part No. 5SY7220-6
Each
TWD2,879.00(exc. GST)
In Stock
Eaton xEffect MCB, 3P, 500mA Curve C
  • RS Stock No. 230-0935
  • Mfr. Part No. 239120 FAZ6-C0,5/3
Each
TWD4,013.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 50A, Breaking Capacity 70 kA
  • RS Stock No. 209-6840
  • Mfr. Part No. 3VA1150-6MH32-0AA0
Each
TWD15,156.00(exc. GST)
1
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