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

262 of 999+
Temporarily out of stock
ABB S800S MCB, 2P, 50A Curve C, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-924
  • Mfr. Part No. 2CCS862001R0504
Each
TWD19,691.00(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 3 channels
  • RS Stock No. 259-3300
  • Mfr. Part No. 1SDA071208R1
Each
TWD958,654.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-4066
  • Mfr. Part No. 1SDA072149R1
Each
TWD293,228.00(exc. GST)
Temporarily out of stock
ABB Accessories MS/MO165 3 Phase Busbar, 690V ac
  • RS Stock No. 258-9395
  • Mfr. Part No. 1SAM401920R1022
Each
TWD1,243.00(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. 230-045
  • Mfr. Part No. 110843 NZMN3-VE250-AVE
Each
TWD110,384.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Connection Unit for use with Circuit Breaker Busbar
  • RS Stock No. 269-8408
  • Mfr. Part No. 8US1250-5AT10
Each
TWD1,224.00(exc. GST)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - IELHK111 3 Pole Panel Mount, 90A Current Rating
  • RS Stock No. 275-0250
  • Mfr. Part No. IELHK111-1-62F-90.0-AB-01-V
1 Box of 5
TWD49,854.00(exc. GST)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - R11 Single Pole Panel Mount, 15A Current Rating
  • RS Stock No. 275-0451
  • Mfr. Part No. R11-2-15.0A-B06CV-V
1 Box of 10
TWD6,406.00(exc. GST)
In Stock
Eaton Moeller Door Coupling Handle for use with PKZM0, PKZM4
  • RS Stock No. 273-6417
  • Mfr. Part No. 106136 PKZ0-XH-MCC
Each
TWD2,534.00(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 3 kA
  • RS Stock No. 245-665
  • Mfr. Part No. 3VA6225-6HN41-0AA0
Each
TWD105,748.00(exc. GST)
In Stock
Eaton xEffect MCB, 2P, 63A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3415
  • Mfr. Part No. 278766 FAZ-C63/2
Each
TWD2,616.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Surge Protector, 50kA, DIN Rail Mount
  • RS Stock No. 219-8277
  • Mfr. Part No. A9L40500
Each
TWD14,408.00(exc. GST)
In Stock
Better World
Schneider Electric iID RCCB, 25A, 4 Pole, 30mA
  • RS Stock No. 734-9129
  • Mfr. Part No. A9R11425
Each
TWD9,547.00(exc. GST)
In Stock
Eaton Eaton Moeller NZM Door Coupling Handle for use with N1, NZM1
  • RS Stock No. 257-005
  • Mfr. Part No. 271445 NZM1-XTVD-NA
Each
TWD3,330.00(exc. GST)
In Stock
Legrand RCCB, 63A, 2 Pole, 30mA, Type A, 230V
  • RS Stock No. 266-1363
  • Mfr. Part No. 411651
Each
TWD6,740.00(exc. GST)
In Stock
Better World
Schneider Electric Compact Nsx, Easypact Cvs Cable Connector for use with 2 Cables 35 mm2 →240 mm2
  • RS Stock No. 221-1229
  • Mfr. Part No. LV432481
Each
TWD7,317.00(exc. GST)
In Stock
HENSEL ENYBOARD Distribution Board, 41 A
  • RS Stock No. 117-118
  • Mfr. Part No. RK 1019 T
Each
TWD2,775.00(exc. GST)
Temporarily out of stock
Schneider Electric A9R RCCB, 63A, 4 Pole, 415V
  • RS Stock No. 207-173
  • Mfr. Part No. A9R21463
Each
TWD19,649.00(exc. GST)
Temporarily out of stock
WAGO EPSITRON Electronic Circuit breaker 8A 30V 787-2861, 1 channels , DIN Rail Mount
  • RS Stock No. 177-6030
  • Mfr. Part No. 787-2861/800-000
Each
TWD2,902.00(exc. GST)
Temporarily out of stock
ABB Circuit Breaker Accessory
  • RS Stock No. 231-9292
  • Mfr. Part No. 1SDA073687R1 YC E1.2..E6.2-XT7M 220-24
Each
TWD5,937.00(exc. GST)
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