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

158 of 999+
Temporarily out of stock
Eaton BB-EV 1 Phase Busbar, 690V, 17.8mm Pitch
  • RS Stock No. 241-340
  • Mfr. Part No. 168854 BB-EVP-10/N-1MU
Each
TWD1,122.00(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 3.2kA 1SDA07, 3 channels
  • RS Stock No. 259-3274
  • Mfr. Part No. 1SDA071172R1
Each
TWD724,413.00(exc. GST)
Temporarily out of stock
Siemens 24V ac Circuit Trip
  • RS Stock No. 223-7621
  • Mfr. Part No. 5TT4405-2
Each
TWD2,525.00(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON Circuit breaker 3P 125A, DIN Rail Mount
  • RS Stock No. 224-7804
  • Mfr. Part No. 3VA1112-5ED36-0AA0
Each
TWD31,310.00(exc. GST)
Temporarily out of stock
ABB S804C MCB, 4P, 10A Curve C, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-980
  • Mfr. Part No. 2CCS884001R0104
Each
TWD21,080.00(exc. GST)
Temporarily out of stock
Schneider Electric Resi9 Connection Unit for use with Resi9 XE DM
  • RS Stock No. 345-162
  • Mfr. Part No. R9EXHS05
Each
TWD475.00(exc. GST)
Temporarily out of stock
Schneider Electric Busbar Feed Unit Joint, KBB Series
  • RS Stock No. 654-157
  • Mfr. Part No. KBB40ZJ44TW
Each
TWD2,094.00(exc. GST)
Temporarily out of stock
ABB S801C MCB, 1P, 63A Curve D, 400V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-346
  • Mfr. Part No. 2CCS881001R0631
Each
TWD6,358.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-836
  • Mfr. Part No. 3VA5225-6EC31-0AA0
Each
TWD68,524.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 iC60H MCB, 4P, 50A Curve C, 440V AC, 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-3335
  • Mfr. Part No. A9F87450
Each
TWD15,533.00(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 16A Curve C, 100 → 130V AC, 12 → 144V DC, 6 kA Breaking Capacity
  • RS Stock No. 734-9065
  • Mfr. Part No. A9F77216
Each
TWD2,622.00(exc. GST)
Temporarily out of stock
Eaton PFIM RCCB, 63A, 4 Pole, 30mA, Type F, Type G, 230/400V ac
  • RS Stock No. 248-927
  • Mfr. Part No. 187358 PFIM-63/4/003-G/F
Each
TWD12,452.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Digital Input/Output Module
  • RS Stock No. 277-0914
  • Mfr. Part No. 3WA9111-0EC11
Each
TWD38,751.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 40A 3VA2, 3 channels
  • RS Stock No. 157-126
  • Mfr. Part No. 3VA2140-5MN36-0AA0
Each
TWD31,061.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 50A, Breaking Capacity 7.5 kA, Fixed Mount
  • RS Stock No. 258-595
  • Mfr. Part No. 284437 NZMH1-S50
Each
TWD15,824.00(exc. GST)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 4P 630A, Fixed Mount
  • RS Stock No. 250-4148
  • Mfr. Part No. 1SDA054419R1
Each
TWD232,374.00(exc. GST)
Temporarily out of stock
Eaton xPole - PXL PXL MCB, 2P, 40A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 256-157
  • Mfr. Part No. 236348 PXL-D40/2
Each
TWD5,058.00(exc. GST)
Temporarily out of stock
Siemens Surge Suppressor Unit, 400 → 600V ac, Clip-On Mount
  • RS Stock No. 156-040
  • Mfr. Part No. 3RT2926-1BF00
Each
TWD599.00(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller 2 Phase Busbar, 600V, 26.4mm Pitch
  • RS Stock No. 123-040
  • Mfr. Part No. 171135 Z-BB/UL18/2P1MU+AUX/46
Each
TWD6,171.00(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 110A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-501
  • Mfr. Part No. 3VA5111-5ED31-1AA0
Each
TWD18,998.00(exc. GST)
1
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