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

90 of 999+
Temporarily out of stock
Legrand Vistop MCB, 3P, 63A, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 620-2892
  • Mfr. Part No. 0 225 12
Each
TWD8,368.00(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 iC40N MCB, 1P + N, 20A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 654-726
  • Mfr. Part No. A9P54620
Each
TWD2,184.00(exc. GST)
In Stock
Siemens 210 → 240V ac Shunt Trip Shunt trip for use with 3RV2 Series Circuit Breakers
  • RS Stock No. 706-1976
  • Mfr. Part No. 3RV2902-2DP0
Each
TWD2,795.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 1.2kA, Breaking Capacity 37 kA, Fixed Mount
  • RS Stock No. 256-978
  • Mfr. Part No. 271125 NZMH4-AE1200-NA
Each
TWD301,957.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4822
  • Mfr. Part No. 3VA2563-7HL32-0AA0
Each
TWD266,401.00(exc. GST)
In Stock
ABB System Pro M Compact S200M MCB, 3P, 6A Curve D
  • RS Stock No. 231-9747
  • Mfr. Part No. 2CDS273001R0061 S203M D 6A - 15 KA
1 Box of 1
TWD4,141.00(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 3P, 40A Curve B, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 200-778
  • Mfr. Part No. 2CDS273061R0405
Each
TWD22,990.00(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 3 Phase Distribution Board, 6 Way, 125 A
  • RS Stock No. 335-395
  • Mfr. Part No. SEA9BPN6M
Each
TWD32,369.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 25A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3394
  • Mfr. Part No. A9F54325
Each
TWD5,185.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 5SY6 MCB, 3P, 300mA Curve C, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 209-6683
  • Mfr. Part No. 5SY6314-7
Each
TWD4,388.00(exc. GST)
Temporarily out of stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 630A, Fixed Mount
  • RS Stock No. 232-0090
  • Mfr. Part No. 1SDA054404R1 T5S630 FF PR221-LS 630A
Each
TWD86,553.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 500A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 230-027
  • Mfr. Part No. 110307 NZMH3-A500-BT
Each
TWD121,189.00(exc. GST)
Temporarily out of stock
ABB Copper Copper Bar for Use with TriLine
  • RS Stock No. 237-6594
  • Mfr. Part No. 2CPX061358R9999
1 Box of 1
TWD47,468.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 80A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9416
  • Mfr. Part No. 3VA1180-3GF46-0AA0
Each
TWD21,595.00(exc. GST)
Temporarily out of stock
ABB S804C MCB, 4P, 13A Curve D, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-501
  • Mfr. Part No. 2CCS884001R0131
Each
TWD22,825.00(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller NZM Door Coupling Handle for use with N(S)4, NZM4
  • RS Stock No. 259-655
  • Mfr. Part No. 271452 NZM4-XTVDVR-NA
Each
TWD12,567.00(exc. GST)
Temporarily out of stock
ABB RCBO, 10A Current Rating, 3P Poles, Type C
  • RS Stock No. 237-5062
  • Mfr. Part No. 2CSR253001R1104
Each
TWD11,244.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 4A Curve D, 277V AC
  • RS Stock No. 256-6816
  • Mfr. Part No. M9F53204
Each
TWD9,531.00(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 1610 Single Pole 32V dc Voltage Rating, 6A Current Rating
  • RS Stock No. 409-867
  • Mfr. Part No. 1610-21-6A
Each
TWD281.00(exc. GST)
Temporarily out of stock
Mersen Surge Protector
  • RS Stock No. 179-3066
  • Mfr. Part No. 83230111 / STPT23-20K275V-2PG-LFM
Each
TWD3,247.00(exc. GST)
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