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

1705 of 999+
In Stock
Eaton xEffect MCB, 1P, 500mA Curve C, 240 → 415V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-6885
  • Mfr. Part No. 102077 FAZ-C0,5/1-NA
Each
TWD1,488.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 5 kA, Withdrawable
  • RS Stock No. 229-468
  • Mfr. Part No. 110859 NZMN3-A400-AVE
Each
TWD97,166.00(exc. GST)
Temporarily out of stock
Eaton Eaton Distribution Parts 3 Phase Busbar, 480V
  • RS Stock No. 253-808
  • Mfr. Part No. 264938 Z-SV-35/3P
Each
TWD4,368.00(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 1P, 35A, Type Z, 230V AC, 220V DC, 10 kA Breaking Capacity
  • RS Stock No. 200-037
  • Mfr. Part No. 2CDS271061R0548
Each
TWD5,642.00(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 1+N, 20A Curve D, 230V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 201-003
  • Mfr. Part No. 2CDS271103R0201
Each
TWD5,622.00(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-429
  • Mfr. Part No. 3VA6210-8KP41-0AA0
Each
TWD167,434.00(exc. GST)
In Stock
Better World
Schneider Electric Easypact Cvs400...630, Nsx400...630 Dc, Powerpact Multistandard Front Plate for use with Compact Nsx
  • RS Stock No. 221-1256
  • Mfr. Part No. LV432558
Each
TWD2,470.00(exc. GST)
Temporarily out of stock
Leitungsschutzschalter Resi9 1P, 16A, C
  • RS Stock No. 537-812
  • Mfr. Part No. R9F28116
Each
TWD1,045.00(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-740
  • Mfr. Part No. 3VA6210-8JT41-0AA0
Each
TWD154,407.00(exc. GST)
Temporarily out of stock
Siemens SENTRON 1 Phase Busbar, 230V
  • RS Stock No. 187-5190
  • Mfr. Part No. 5ST3687-0
Each
TWD545.00(exc. GST)
In Stock
Finder Busbar, 6 A - 250V
  • RS Stock No. 776-1531
  • Mfr. Part No. 093.16.1
Each
TWD82.00(exc. GST)
Temporarily out of stock
Siemens SIRIUS Undervoltage Release for use with Motor Circuit Breaker
  • RS Stock No. 157-848
  • Mfr. Part No. 3RV2922-1CB0
Each
TWD2,299.00(exc. GST)
Temporarily out of stock
ABB S803N MCB, 3P, 50A Curve C, 690V AC, 36 kA Breaking Capacity
  • RS Stock No. 140-995
  • Mfr. Part No. 2CCS893001R0504
Each
TWD21,210.00(exc. GST)
New product - Preorder today
Schneider Electric VigiPacT Wiring Kit for use with VigiPacT RHB Residual Current Protection Relay
  • RS Stock No. 655-030
  • Mfr. Part No. LV481017
Each
TWD17,715.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Vigi iDT40 RCD, 25A, 3 Pole, 30mA
  • RS Stock No. 191-6143
  • Mfr. Part No. A9Y62325
Each
TWD12,751.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA 1SDA07, 3 channels
  • RS Stock No. 259-4095
  • Mfr. Part No. 1SDA072190R1
Each
TWD328,950.00(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 3P, 16A Curve B, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 201-211
  • Mfr. Part No. 2CDS273061R0165
Each
TWD16,127.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 200A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-518
  • Mfr. Part No. 3VA5220-5GD41-2AA0
Each
TWD71,807.00(exc. GST)
In Stock
Lovato RCBO, 40A Current Rating, 1P+N Poles, 300mA Trip Sensitivity, Type C, P1 Range
  • RS Stock No. 277-5064
  • Mfr. Part No. P1RE1NC40AC300
Each
TWD3,765.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Busbar Feed Unit, Canalis KBB Series
  • RS Stock No. 211-0377
  • Mfr. Part No. KBB40ABG44TW
Each
TWD5,030.00(exc. GST)
1
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