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

47 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4756
  • Mfr. Part No. 3VA2163-7KP32-0AA0
Each
TWD73,443.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti9 iTG40 RCD, 40A, 1 Pole, 300mA, Type A-SI, 400V ac
  • RS Stock No. 239-9996
  • Mfr. Part No. A9Y16640
Each
TWD13,193.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Busbar Tap-Off Unit, Canalis KS Series
  • RS Stock No. 211-0459
  • Mfr. Part No. KSA25HD502
Each
TWD70,442.00(exc. GST)
In Stock
Schneider Electric Mureva Enclosure
  • RS Stock No. 466-0533
  • Mfr. Part No. 13443
Each
TWD4,380.00(exc. GST)
Temporarily out of stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 63A, Fixed Mount
  • RS Stock No. 232-0214
  • Mfr. Part No. 1SDA066805R1 XT1B 160 TMD 63A FF
Each
TWD10,179.00(exc. GST)
Limited stock
Better World
Schneider Electric Acti 9 4 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2770
  • Mfr. Part No. A9XPH512
Each
TWD1,458.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 630A, Breaking Capacity 9 kA, Withdrawable
  • RS Stock No. 242-927
  • Mfr. Part No. 192312 NZMH3-4-PX630/VAR-AVE
Each
TWD265,849.00(exc. GST)
Temporarily out of stock
Eaton BCZ-A Door for use with Distribution Boards
  • RS Stock No. 243-512
  • Mfr. Part No. 101581 BCZ-A-TWS-4/52
Each
TWD3,544.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Straight Busbar Trunking, 2m, 40A, Canalis Series
  • RS Stock No. 211-0364
  • Mfr. Part No. KBA40ED4203TW
Each (In a Pack of 6)
TWD5,292.50(exc. GST)
Temporarily out of stock
Eaton NZMC3 Electronic Circuit Breaker 320A , 4 channels , Fixed
  • RS Stock No. 121-304
  • Mfr. Part No. 168465 NZMC3-4-A320/200-SVE
Each
TWD113,085.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2kA 1SDA07, 3 channels
  • RS Stock No. 259-4277
  • Mfr. Part No. 1SDA072406R1
Each
TWD425,105.00(exc. GST)
In Stock
HENSEL 1, 3 Phase Distribution Board, 24 Way, 63 A
  • RS Stock No. 183-2860
  • Mfr. Part No. KV9224M
Each
TWD5,088.00(exc. GST)
In Stock
Eaton RCBO, 20A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, Type C, FRBmM Range
  • RS Stock No. 123-653
  • Mfr. Part No. 170789 FRBMM-C20/2/003-A
Each
TWD5,416.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4676
  • Mfr. Part No. 3VA2140-7MN32-0AA0
Each
TWD37,065.00(exc. GST)
In Stock
ABB Tmax XT Cover for use with Tmax XT
  • RS Stock No. 232-0208
  • Mfr. Part No. 1SDA066668R1 HTC XT3 2PCS
Each
TWD818.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 1P, 3A Curve C, 240V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-3430
  • Mfr. Part No. A9F74103
Each
TWD2,028.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 20A, Breaking Capacity 25 kA
  • RS Stock No. 209-6768
  • Mfr. Part No. 3VA1120-3EE32-0AA0
Each
TWD13,647.00(exc. GST)
In Stock
ABB 4 Way Plastic Consumer Unit, 63A, IP65 Mistral65
  • RS Stock No. 811-1880
  • Mfr. Part No. 1SL1200A00 65P04X12
Each
TWD914.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 35A, Breaking Capacity 7 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-589
  • Mfr. Part No. 3VA5135-5ED31-0AA0
Each
TWD15,797.00(exc. GST)
Temporarily out of stock
Siemens 5SM21 RCCB, 16A, 2 Pole, 10mA, Type A, 230V
  • RS Stock No. 328-413
  • Mfr. Part No. 5SM2121-6
Each
TWD5,441.00(exc. GST)
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