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

13 of 999+
Schneider Electric, ComPacT NSX MCCB 3P 50A, Fixed Mount
  • RS Stock No. 254-6271
  • Mfr. Part No. C103MA050
Each
TWD7,721.00(exc. GST)
Siemens SENTRON for use with 3VA53/54, 3VA63/64 Series
  • RS Stock No. 263-889
  • Mfr. Part No. 3VA9477-0CB10
Each
TWD12,180.00(exc. GST)
Schneider Electric, ComPacT MCCB 1P 25A, Breaking Capacity 18 kA, Fixed Mount
  • RS Stock No. 345-307
  • Mfr. Part No. C10F1TM025
Each
TWD17,655.00(exc. GST)
ABB MCCB Molded Case Circuit Breaker 4P 32A, Fixed Mount
  • RS Stock No. 250-4207
  • Mfr. Part No. 1SDA054497R1
Each
TWD105,169.00(exc. GST)
Siemens SENTRON Current Transformer for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 266-728
  • Mfr. Part No. 3VW9011-0GF31
Each
TWD38,123.00(exc. GST)
Siemens ALPHA Assembly Kit for use with 3VA2 Molded Case Circuit Breakers
  • RS Stock No. 629-306
  • Mfr. Part No. 8GK6724-4KK33
Each
TWD8,969.00(exc. GST)
Eaton RCCB, 25A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 227-0691
  • Mfr. Part No. 267441 PFGM-25/2/003-A
Each
TWD3,039.00(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 400A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3498
  • Mfr. Part No. 3VA1440-5MH32-0AA0
Each
TWD136,087.00(exc. GST)
Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 256-012
  • Mfr. Part No. 269273 NZMH2-S160-CNA
Each
TWD59,464.00(exc. GST)
Schneider Electric, ComPacT MCCB 4P 50A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 655-285
  • Mfr. Part No. C11N44V050L
Each
TWD60,475.00(exc. GST)
Schneider Electric Acti9 Active iDT40 AFDD, 40A, 1+N Pole
  • RS Stock No. 238-3483
  • Mfr. Part No. A9TAA2640
Each
TWD17,220.00(exc. GST)
Siemens Fire Safety Circuit Breaker, 16A Current Rating, 1P Poles, 16mA Trip Sensitivity, SENTRON Range
  • RS Stock No. 202-7206
  • Mfr. Part No. 5SM6021-2
Each
TWD10,377.00(exc. GST)
Better World
Siemens SENTRON 5SY MCB, 4P, 63A Curve C
  • RS Stock No. 232-2321
  • Mfr. Part No. 5SY6463-7
Each
TWD14,645.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 1.2kA, Breaking Capacity 15 kA, Fixed Mount
  • RS Stock No. 259-058
  • Mfr. Part No. 271141 NZMN4-VEF1200-NA
Each
TWD298,087.00(exc. GST)
Schneider Electric, ComPacT MCCB 4P 1kA, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 346-743
  • Mfr. Part No. C100N45AFM
Each
TWD466,715.00(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 874-4402
  • Mfr. Part No. 3VA2225-5HL32-0AA0
Each
TWD34,738.00(exc. GST)
Eaton xEffect FAZ MCB, 3+N, 1A Curve B, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 258-771
  • Mfr. Part No. 278934 FAZ-B1/3N
Each
TWD6,552.00(exc. GST)
Eaton RCD, 20A, 2 Pole, 30mA, Type C
  • RS Stock No. 922-8733
  • Mfr. Part No. 236245 PKNM-20/1N/C/003-MW
Each
TWD5,672.00(exc. GST)
Eaton IZMX/INX Electronic Circuit Breaker 3.2kA IZMX/INX, 4 channels , Fixed
  • RS Stock No. 132-739
  • Mfr. Part No. 183793 IZMX40N4-P32W-1
Each
TWD1,213,776.00(exc. GST)
ABB S803S MCB, 3P, 32A, UC-B, 750V DC, 50 kA Breaking Capacity
  • RS Stock No. 141-185
  • Mfr. Part No. 2CCS863001R1325
Each
TWD30,123.00(exc. GST)
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