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

176 of 999+
Better World
ABB System Pro M Compact S200 MCB, 1+N, 63A, Type Z
  • RS Stock No. 237-3224
  • Mfr. Part No. 2CDS251103R0608
Each
TWD3,872.00(exc. GST)
Better World
ABB, XT4N MCCB 3P 12.5A, Fixed Mount
  • RS Stock No. 236-6598
  • Mfr. Part No. 1SDA068113R1 XT4N 160 MA 12.5 FF
Each
TWD17,326.00(exc. GST)
Better World
ABB, XT2L MCCB 4P 63A, Fixed Mount
  • RS Stock No. 236-6504
  • Mfr. Part No. 1SDA067961R1 XT2L 160 Ekip LSI 63A FF
Each
TWD57,026.00(exc. GST)
Eaton RCBO, 16A Current Rating, 2P Poles, 10mA Trip Sensitivity, Type A, Type C, FRBdM Range
  • RS Stock No. 121-252
  • Mfr. Part No. 168255 FRBDM-C16/1N/001-G/A
Each
TWD7,099.00(exc. GST)
Better World
Siemens SENTRON 5SL6 MCB, 1+N, 10A Curve B, 230V AC
  • RS Stock No. 209-7502
  • Mfr. Part No. 5SL6010-6
Each
TWD1,505.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 630A, Breaking Capacity 5 kA, Withdrawable
  • RS Stock No. 251-124
  • Mfr. Part No. 192350 NZMN3-PX630-AVE
Each
TWD159,991.00(exc. GST)
Phoenix Contact Surge Protector, 240V (Volts), DIN Rail Mount
  • RS Stock No. 277-8611
  • Mfr. Part No. 1088573
Each
TWD5,519.00(exc. GST)
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 2A Curve C, 12 → 60 V, 100 → 130 V, 220 → 240 V, 380
  • RS Stock No. 734-9131
  • Mfr. Part No. A9F74202
Each
TWD4,130.00(exc. GST)
Siemens ALPHA Terminal Holder for use with ALPHA DIN Installation Distributor
  • RS Stock No. 272-0359
  • Mfr. Part No. 8GK9911-0KK07
Each (In a Pack of 50)
TWD139.80(exc. GST)
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-379
  • Mfr. Part No. 3VA5212-7GD41-2AA0
Each
TWD83,049.00(exc. GST)
Hager NEN MCB, 1P, 40A, 230V AC, 10 Breaking Capacity
  • RS Stock No. 602-149
  • Mfr. Part No. NEN140
Each
TWD2,645.00(exc. GST)
Eaton xEffect MCB, 1+N, 3.5A Curve D
  • RS Stock No. 230-1032
  • Mfr. Part No. 177524 FAZ6-D3,5/1N
Each
TWD2,614.00(exc. GST)
Siemens SENTRON 4 Phase Busbar
  • RS Stock No. 187-5208
  • Mfr. Part No. 5ST3746-1
Each
TWD3,836.00(exc. GST)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 63A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 259-318
  • Mfr. Part No. 290360 NZMH2-A63-S1
Each
TWD28,276.00(exc. GST)
Eaton xEffect FAZ MCB, 1+N, 4A Curve C, 240V AC, 60V DC, 7.5 kA Breaking Capacity
  • RS Stock No. 255-795
  • Mfr. Part No. 241025 FAZT-C4/1N
Each
TWD3,636.00(exc. GST)
Schneider Electric Acti9 1 Phase Distribution Board, 18 Way, 125 A
  • RS Stock No. 339-811
  • Mfr. Part No. SEA9APN18
Each
TWD12,067.00(exc. GST)
ABB MCCB Molded Case Circuit Breaker 3P 630A, Fixed Mount
  • RS Stock No. 250-4250
  • Mfr. Part No. 1SDA054548R1
Each
TWD230,201.00(exc. GST)
ABB Cover for use with SACE Tmax XT
  • RS Stock No. 192-0928
  • Mfr. Part No. 1SDA066667R1
Each
TWD1,985.00(exc. GST)
ABB High Performance S800S MCB, 3P, 16A Curve C, 400 V, 690 V AC, 50 kA Breaking Capacity
  • RS Stock No. 231-9572
  • Mfr. Part No. 2CCS863001R0164 S803S C 16A - 50 KA
1 Box of 1
TWD8,017.00(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 159-526
  • Mfr. Part No. 3VA2140-5HL36-0AA0
Each
TWD26,360.00(exc. GST)
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