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

1691 of 999+
Temporarily out of stock
Eaton NZML2-4-VE100-SVE Electronic Circuit Breaker 100A NZM, 3 channels , Fixed
  • RS Stock No. 120-721
  • Mfr. Part No. 169027 NZML2-4-VE100-SVE
Each
TWD76,607.00(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 4P, 50A, Type Z, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 257-816
  • Mfr. Part No. 279120 FAZ-Z50/4
Each
TWD12,414.00(exc. GST)
Temporarily out of stock
Lovato P1RD Residual Current Circuit Breaker, 40A, 2 Pole, 300mA, Type AC, 230V ac
  • RS Stock No. 277-5041
  • Mfr. Part No. P1RD2P40AC300
Each
TWD4,730.00(exc. GST)
Temporarily out of stock
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC Single Pole 65V dc Voltage Rating DIN Rail, 6A Current Rating
  • RS Stock No. 135-435
  • Mfr. Part No. 0914141
1 Pack of 6
TWD16,636.00(exc. GST)
Temporarily out of stock
Eaton Connection Clamp for use with BB-UL, Busbar
  • RS Stock No. 244-717
  • Mfr. Part No. 169823 BB-UL-TEPA/35
1 Pack of 10
TWD3,833.00(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1+N, 12A Curve D, 230V AC, 15 kA Breaking Capacity
  • RS Stock No. 259-595
  • Mfr. Part No. 278694 FAZ-D12/1N
Each
TWD2,586.00(exc. GST)
In Stock
Siemens Sentron Connecting Terminals for use with Busbar System
  • RS Stock No. 228-8257
  • Mfr. Part No. 8US1941-2AA04
Each
TWD7,225.00(exc. GST)
Temporarily out of stock
Schneider Electric Acti 9 Acti9 iDT40N XA MCB, 3+N, 25A Curve C, 400V AC
  • RS Stock No. 238-3438
  • Mfr. Part No. A9PA4725
Each
TWD8,984.00(exc. GST)
New product - Preorder today
Schneider Electric Straight Busbar Trunking, 1.9m, 1000A, KSA Series
  • RS Stock No. 655-185
  • Mfr. Part No. KSA1000ET43A
Each
TWD192,832.00(exc. GST)
Temporarily out of stock
Eaton RCBO, 6A Current Rating, 2P Poles, 10mA Trip Sensitivity, Type A, Type C, FRBdM Range
  • RS Stock No. 121-042
  • Mfr. Part No. 168297 FRBDM-C6/2/001-G/A
Each
TWD8,412.00(exc. GST)
Temporarily out of stock
Eaton NZM Jumper Link for use with N3-4-...-S1(-S15)-DC
  • RS Stock No. 120-238
  • Mfr. Part No. 168589 NZM3-4-XKV2POU
Each
TWD20,147.00(exc. GST)
Temporarily out of stock
Better World
Siemens RCBO, 32A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Sentron Range
  • RS Stock No. 243-6201
  • Mfr. Part No. 5SU1326-7FP32
Each
TWD5,415.00(exc. GST)
Temporarily out of stock
ABB RCBO, 6A Current Rating, 4P Poles, Type B
  • RS Stock No. 237-5093
  • Mfr. Part No. 2CSR254001R1065
Each
TWD13,053.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA, 4 channels
  • RS Stock No. 155-845
  • Mfr. Part No. 3VA2440-7HK42-0AA0
Each
TWD168,232.00(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 250A Ekip G Hi-Touch LSIG, 4 channels
  • RS Stock No. 259-3397
  • Mfr. Part No. 1SDA071330R1
Each
TWD457,702.00(exc. GST)
Temporarily out of stock
HENSEL ENYSTAR Distribution Board, 4 Way, 125 A
  • RS Stock No. 117-554
  • Mfr. Part No. FP VN 0401 GB
Each
TWD46,732.00(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 50A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 229-873
  • Mfr. Part No. 113341 NZMH2-S50-SVE
Each
TWD22,376.00(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-476
  • Mfr. Part No. 3VA6210-5JP31-2AA0
Each
TWD106,131.00(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 Acti9 iDT40T MCB, 3P, 6A Curve D, 400V AC
  • RS Stock No. 238-3382
  • Mfr. Part No. A9P32306
Each
TWD7,793.00(exc. GST)
Temporarily out of stock
Siemens SENTRON Link Module for use with 5SY
  • RS Stock No. 212-8820
  • Mfr. Part No. 5SM2642-6
Each
TWD3,767.00(exc. GST)
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