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

35885 Products showing for Circuit Breakers

7 of 999+
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 63A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9612
  • Mfr. Part No. 3VA10634ED360AA0
Each
TWD13,892.00(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 110A, Breaking Capacity 65 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-514
  • Mfr. Part No. 3VA5111-6ED21-0AA0
Each
TWD19,679.00(exc. GST)
Better World
Siemens, SENTRON Circuit breaker 4P 125A, DIN Rail Mount
  • RS Stock No. 224-7805
  • Mfr. Part No. 3VA1112-5GF42-0AA0
Each
TWD41,889.00(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 20A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-215
  • Mfr. Part No. 3VA5120-4EF41-0AA0
Each
TWD23,832.00(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 125A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-260
  • Mfr. Part No. 3VA5112-5ED31-1AA0
Each
TWD34,212.00(exc. GST)
Siemens, SENTRON MCCB 2P 80A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 147-716
  • Mfr. Part No. 3VA5180-5ED21-1AA0
Each
TWD16,790.00(exc. GST)
Siemens, SENTRON MCCB 1P 70A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 147-529
  • Mfr. Part No. 3VA5170-4ED11-0AA0
Each
TWD9,118.00(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 20A, Breaking Capacity 14 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-289
  • Mfr. Part No. 3VA5120-4ED11-1AA0
Each
TWD8,846.00(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-731
  • Mfr. Part No. 3VA5110-1MU31-0AA0
Each
TWD26,224.00(exc. GST)
Better World
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 232-0270
  • Mfr. Part No. 1SDA068092R1 XT4N 250 TMA 250A FF
Each
TWD26,913.00(exc. GST)
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 630A, Fixed Mount
  • RS Stock No. 231-9331
  • Mfr. Part No. 1SDA100355R1 XT5N 630 EkipDip LS/I 630
Each
TWD72,625.00(exc. GST)
Siemens, SENTRON MCCB 1P 15A, Breaking Capacity 18 kA, Fixed Mount
  • RS Stock No. 147-757
  • Mfr. Part No. 3VA5195-6ED11-1AA0
Each
TWD9,840.00(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 125A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-523
  • Mfr. Part No. 3VA5112-1MH31-0AA0
Each
TWD42,280.00(exc. GST)
Better World
Siemens, 3VA2 MCCB 4P 40A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 210-3343
  • Mfr. Part No. 3VA2140-6KP46-0AA0
Each
TWD81,805.00(exc. GST)
Phoenix Contact 3 Phase Surge Protector, 5kA, 450V (Volts), DIN Rail Mount
  • RS Stock No. 254-4807
  • Mfr. Part No. 2803069
Each
TWD8,124.00(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 80A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 874-4354
  • Mfr. Part No. 3VA1180-4EE36-0AA0
Each
TWD16,507.00(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 80A, Breaking Capacity 55 kA
  • RS Stock No. 209-6860
  • Mfr. Part No. 3VA1180-5ED32-0AA0
Each
TWD16,856.00(exc. GST)
Siemens SIRIUS 3 Phase Busbar, 690V, 45mm Pitch
  • RS Stock No. 246-5140
  • Mfr. Part No. 3RV1915-1CB
Each
TWD705.00(exc. GST)
Siemens, SENTRON MCCB 3P 15A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 147-604
  • Mfr. Part No. 3VA5195-4EC31-0AA0
Each
TWD16,294.00(exc. GST)
Better World
Siemens 5SV3 RCCB, 25A, 4 Pole, 30mA, Type A
  • RS Stock No. 124-7731
  • Mfr. Part No. 5SV3342-6
Each
TWD6,388.00(exc. GST)
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