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

59 of 999+
Eaton xEffect FAZ MCB, 1P, 3A Curve C, 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 231-935
  • Mfr. Part No. 113753 FAZ-C3/1-NA-DC
1 Pack of 2
TWD8,322.00(exc. GST)
Phoenix Contact EC-E Electronic Circuit Breaker 3A 24V EC-E4, 1 channels , DIN Rail
  • RS Stock No. 131-326
  • Mfr. Part No. 0903034
Each (In a Pack of 6)
TWD2,788.30(exc. GST)
Better World
Siemens SENTRON 3VA1 MCB, 4P, 25A
  • RS Stock No. 224-7833
  • Mfr. Part No. 3VA1125-4GF42-0AA0
Each
TWD19,471.00(exc. GST)
Siemens SENTRON 5SJ4 MCB, 3P, 6A Curve C, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 213-1030
  • Mfr. Part No. 5SJ4306-7HG42
Each
TWD7,689.00(exc. GST)
Siemens SENTRON 5SJ4 MCB, 1P, 20A Curve C, 14 kA Breaking Capacity
  • RS Stock No. 202-7161
  • Mfr. Part No. 5SJ4120-7HG41
Each
TWD2,255.00(exc. GST)
Schneider Electric Acti9 Acti9 Reflex MCB, 2P, 40A Curve B, 230V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 354-488
  • Mfr. Part No. A9C61240
Each
TWD15,131.00(exc. GST)
Better World
Siemens SENTRON 5SY4 MCB, 3+N, 2A Curve D, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 212-8843
  • Mfr. Part No. 5SY4602-8
Each
TWD6,477.00(exc. GST)
Better World
Schneider Electric ID RCCB, 40A, 2 Pole, 30mA, Type A, 240V ac
  • RS Stock No. 214-2101
  • Mfr. Part No. M9R31240
Each
TWD6,436.00(exc. GST)
Legrand 4115 RCD, 80A, 1+N Pole, 30mA, Type AC
  • RS Stock No. 863-7776
  • Mfr. Part No. 4 115 07
Each
TWD2,166.00(exc. GST)
Better World
Siemens Surge Protector, Clip-On Mount
  • RS Stock No. 203-2596
  • Mfr. Part No. 3RT2926-1JJ00
Each
TWD1,173.00(exc. GST)
ETA Thermal Circuit Breaker - 3130 2 Pole 240V Voltage Rating Snap In, 15A Current Rating
  • RS Stock No. 212-2001
  • Mfr. Part No. 3130-F120-P7T1-W02Q-15A
Each
TWD1,748.00(exc. GST)
Phoenix Contact TRABTECH Electronic Circuit breaker 3A 24V CB E1, On Base Element
  • RS Stock No. 768-1104
  • Mfr. Part No. 2800917
Each
TWD1,679.00(exc. GST)
Phoenix Contact PTCB Electronic Circuit Breaker 0.1 → 0.63A 12V PTCB E1, 1 channels , DIN Rail
  • RS Stock No. 494-813
  • Mfr. Part No. 1441495
Each
TWD1,215.00(exc. GST)
Better World
Schneider Electric Busbar Centre Feed Unit, Canalis KS Series
  • RS Stock No. 211-0460
  • Mfr. Part No. KSA400ABT4
Each
TWD71,088.00(exc. GST)
Phoenix Contact CB-E1 Electronic Circuit breaker 4A 24V CB E1, On Base Element
  • RS Stock No. 217-6386
  • Mfr. Part No. 2800925
Each
TWD1,684.00(exc. GST)
Siemens, SENTRON MCCB 4P 300A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 256-555
  • Mfr. Part No. 3VA5330-5GF41-2AA0
Each
TWD119,694.00(exc. GST)
Murrelektronik Limited Electronic Circuit Breaker
  • RS Stock No. 123-6692
  • Mfr. Part No. 9000-41042-0100400
Each
TWD4,728.00(exc. GST)
Better World
Siemens SIRIUS Electronic Circuit Breaker 500mA 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-099
  • Mfr. Part No. 3RV2311-0FC10
Each
TWD3,918.00(exc. GST)
Schneider Electric, ComPacT Circuit Breaker Accessory 1P
  • RS Stock No. 288-1501
  • Mfr. Part No. LV438320
Each
TWD1,682.00(exc. GST)
Better World
Siemens SENTRON Electronic Circuit Breaker 25A 3VA2, 4 channels
  • RS Stock No. 157-269
  • Mfr. Part No. 3VA2125-5JQ42-0AA0
Each
TWD78,372.00(exc. GST)
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