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

1750 of 999+
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 25A, Breaking Capacity 15 kA, Fixed Mount
  • RS Stock No. 229-665
  • Mfr. Part No. 110297 NZMH2-A25-BT
Each
TWD21,035.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS Stock No. 229-982
  • Mfr. Part No. 107780 NZMB2-A100-BT-NA
Each
TWD25,019.00(exc. GST)
Contactum 16 Way Steel Consumer Unit, 100A Defender
  • RS Stock No. 184-9131
  • Mfr. Part No. DDS16188MS-P01
Each
TWD8,426.00(exc. GST)
Siemens SENTRON 5SJ MCB, 1P, 5A
  • RS Stock No. 232-2226
  • Mfr. Part No. 5SJ4111-8HG41
Each
TWD2,164.00(exc. GST)
Better World
Siemens RCBO, 20A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 151-1217
  • Mfr. Part No. 5SU1356-7KK20
Each
TWD5,524.00(exc. GST)
ABB SU200 M MCB, 3P, 1A Curve K, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 200-810
  • Mfr. Part No. 2CDS273337R0217
Each
TWD14,129.00(exc. GST)
Schneider Electric Acti9 3 Phase Distribution Board, 16 Way, 250 A
  • RS Stock No. 336-635
  • Mfr. Part No. SEA9BPN16
Each
TWD38,353.00(exc. GST)
Better World
Siemens SENTRON 5SL6 MCB, 1P, 20A Curve C, 6 kA Breaking Capacity
  • RS Stock No. 202-7173
  • Mfr. Part No. 5SL6120-7
Each
TWD690.00(exc. GST)
ABB Emax2 Electronic Circuit Breaker 2.5kA Ekip Dip LSI, 4 channels
  • RS Stock No. 259-3757
  • Mfr. Part No. 1SDA071752R1
Each
TWD722,967.00(exc. GST)
MEAN WELL Surge Protector, 20kA, 1500V (Volts)
  • RS Stock No. 424-954
  • Mfr. Part No. SPD-20-240P
Each
TWD567.00(exc. GST)
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7233
  • Mfr. Part No. 1SDA067279R1 TMG 100-300 XT2 4p
Each
TWD10,303.00(exc. GST)
Siemens SENTRON 1 Phase Busbar, 18mm Pitch
  • RS Stock No. 187-5180
  • Mfr. Part No. 5ST3653
Each
TWD1,072.00(exc. GST)
Better World
Schneider Electric Circuit Trip
  • RS Stock No. 212-0240
  • Mfr. Part No. LV431495
Each
TWD57,163.00(exc. GST)
Siemens SENTRON 5SY8 MCB, 2P, 4A Curve D, 230V AC, 60V DC, 50 kA Breaking Capacity
  • RS Stock No. 610-624
  • Mfr. Part No. 5SY8504-8
Each
TWD4,173.00(exc. GST)
Eaton xEffect FAZ MCB, 2P, 25A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 235-138
  • Mfr. Part No. 102232 FAZ-D25/2-RT
Each
TWD6,552.00(exc. GST)
ABB Front Terminal for use with S6, T6
  • RS Stock No. 250-4522
  • Mfr. Part No. 1SDA050704R1
Each
TWD19,164.00(exc. GST)
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Hi-Touch LSI, 4 channels
  • RS Stock No. 259-3612
  • Mfr. Part No. 1SDA071588R1
Each
TWD438,840.00(exc. GST)
Eaton xEffect FAZ MCB, 4P, 1A Curve C, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 258-876
  • Mfr. Part No. 279046 FAZ-C1/4
Each
TWD9,234.00(exc. GST)
Eaton NZM Auxiliary Contact for use with Circuit Breaker
  • RS Stock No. 256-108
  • Mfr. Part No. 266706 NZM2-XSVR
Each
TWD3,088.00(exc. GST)
Schneider Electric, ComPacT MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-8017
  • Mfr. Part No. C25V42D160
Each
TWD135,953.00(exc. GST)
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