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

1732 of 999+
Temporarily out of stock
PLN6 PLN6 MCB, 1P, 25A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 255-888
  • Mfr. Part No. 263274 PLN6-B25/1N-DE
Each
TWD3,621.00(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY7 MCB, 3P, 40A Curve D, 400V AC, 50V DC, 20 kA Breaking Capacity
  • RS Stock No. 610-393
  • Mfr. Part No. 5SY7340-8
Each
TWD10,323.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Connection Kit
  • RS Stock No. 277-0772
  • Mfr. Part No. 3WA9111-0AL25
Each
TWD8,016.00(exc. GST)
Temporarily out of stock
SENTRON Plate for use with 3VA53/54, 3VA63/64 Series
  • RS Stock No. 263-825
  • Mfr. Part No. 3VA9471-0WJ40
Each
TWD1,602.00(exc. GST)
Temporarily out of stock
Schneider Electric VigiPacT Wiring Kit for use with VigiPacT RHB Residual Current Protection Relay
  • RS Stock No. 654-643
  • Mfr. Part No. LV481018
Each
TWD19,764.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Controller
  • RS Stock No. 277-0955
  • Mfr. Part No. 3WA9111-0EM62
1 Set
TWD16,906.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 7.5 kA, Plug In
  • RS Stock No. 231-322
  • Mfr. Part No. 112805 NZMH1-S40-SVE
Each
TWD20,537.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 200A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-509
  • Mfr. Part No. 3VA5220-5EF31-0AA0
Each
TWD50,059.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 Acti9 iDT40N MCB, 1P, 16A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 191-6109
  • Mfr. Part No. A9P24616
Each
TWD2,453.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 200A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 255-662
  • Mfr. Part No. 269262 NZMN2-S200-CNA
Each
TWD58,928.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 5 kA, Withdrawable
  • RS Stock No. 230-044
  • Mfr. Part No. 110840 NZMN3-AE250-AVE
Each
TWD107,089.00(exc. GST)
Temporarily out of stock
ABB Tmax XT Rear Terminal for use with XT3
  • RS Stock No. 237-6172
  • Mfr. Part No. 1SDA066954R1 R x RC XT3 4PCS
Each
TWD5,878.00(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 1P 80A, Breaking Capacity 65 kA, Clip-On
  • RS Stock No. 428-842
  • Mfr. Part No. BJF16080
Each
TWD27,593.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 246-070
  • Mfr. Part No. 147398 NZMN2-4-VE250-BT
Each
TWD84,407.00(exc. GST)
Temporarily out of stock
Phoenix Contact Thermomagnetic Device Circuit Breaker Thermal Circuit Breaker - CB Single Pole 50V dc Voltage Rating,
  • RS Stock No. 212-8783
  • Mfr. Part No. 2800844
Each
TWD1,542.00(exc. GST)
Temporarily out of stock
Phoenix Contact Thermomagnetic Device Circuit Breaker Thermal Circuit Breaker - CB Single Pole 50V dc Voltage Rating,
  • RS Stock No. 212-8791
  • Mfr. Part No. 2800863
Each
TWD1,542.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 63A 3VA2, 3 channels
  • RS Stock No. 157-296
  • Mfr. Part No. 3VA2163-5MN36-0AA0
Each
TWD31,061.00(exc. GST)
In Stock
Phoenix Contact Thermal Circuit Breaker - TMC M1 Single Pole 65 V dc, 250V ac Voltage Rating DIN Rail Mount, 1A
  • RS Stock No. 801-7028
  • Mfr. Part No. 0914439
Each
TWD2,711.00(exc. GST)
In Stock
Schneider Electric 240 → 440V ac Earth Leakage Add-on Protection Module Circuit Trip for use with ComPacT
  • RS Stock No. 130-910
  • Mfr. Part No. LV432464
Each
TWD205,293.00(exc. GST)
Temporarily out of stock
Eaton NZM Handle for use with NS3…-NA, NZM3…-NA
  • RS Stock No. 120-816
  • Mfr. Part No. 155502 NZM3-XSH-4X-84-NA
Each
TWD45,094.00(exc. GST)
1
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