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

39047 Products showing for Circuit Breakers

1579 of 999+
In Stock
Eaton Eaton Moeller U-PKZ0 Undervoltage Release for use with Motor Protective Circuit Breaker
  • RS stock no. 243-837
  • Mfr. Part No. 073146 U-PKZ0(240V60HZ)
Each
R 963.63(exc. VAT)
In Stock
Schneider Electric Resi9 Resi9 XP DM MCB, 1+N, 10A Curve D, 230V AC, 3000 A Breaking Capacity
  • RS stock no. 287-6092
  • Mfr. Part No. R9PFD610
Each
R 331.94(exc. VAT)
Temporarily out of stock
ABB S800S MCB, 4P, 50A Curve D, 240V AC, 50 kA Breaking Capacity
  • RS stock no. 140-765
  • Mfr. Part No. 2CCS864001R0501
Each
R 9,125.35(exc. VAT)
Temporarily out of stock
ABB 230 → 400V ac Isolator Circuit Trip for use with Commanding Load
  • RS stock no. 225-5978
  • Mfr. Part No. 2CDE284001R0100
Each
R 2,545.72(exc. VAT)
In Stock
Eaton xEffect MCB, 1P, 500mA Curve D, 240V AC, 48V DC, 10 kA Breaking Capacity
  • RS stock no. 847-3443
  • Mfr. Part No. 278568 FAZ-D0,5/1
Each
R 779.17(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 4P 32A, Fixed Mount
  • RS stock no. 236-6686
  • Mfr. Part No. 1SDA068316R1 XT4S 160 TMD 32A FF
Each
R 16,213.87(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 3 channels
  • RS stock no. 157-318
  • Mfr. Part No. 3VA2225-7HN32-0AA0
Each
R 26,968.46(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 50A, Breaking Capacity 18.5 kA, Fixed Mount
  • RS stock no. 254-526
  • Mfr. Part No. 265801 NZMB1-4-A50
Each
R 9,998.11(exc. VAT)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 250A Ekip G Touch LSIG, 4 channels
  • RS stock no. 259-4469
  • Mfr. Part No. 1SDA072677R1
Each
R 188,026.24(exc. VAT)
Temporarily out of stock
ABB SMISSLINE TP MCB, 1P, 1.6A Curve C, 240V AC
  • RS stock no. 246-2500
  • Mfr. Part No. 2CCS571001R0974 S401M-C1.6
Each
R 971.66(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS stock no. 245-532
  • Mfr. Part No. 3VA6140-8JQ31-0AA0
Each
R 38,517.02(exc. VAT)
Unavailable
Schneider Electric Acti 9 C60-PV MCB, 1P, 1A Curve C, 800V DC, 3 kA Breaking Capacity
  • RS stock no. 776-3635
  • Mfr. Part No. A9N61653
Each
R 4,592.48(exc. VAT)
Unavailable
Schneider Electric 690V ac Circuit Trip for use with Compact NSX 100/160/250 Circuit Breakers
  • RS stock no. 219-9322
  • Mfr. Part No. LV429041
Each
R 5,840.27(exc. VAT)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip G Touch LSIG, 3 channels
  • RS stock no. 259-3152
  • Mfr. Part No. 1SDA071007R1
Each
R 191,325.75(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4202 MCB, 2P, 2A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS stock no. 299-795
  • Mfr. Part No. 5SJ4202-8HG42
Each
R 3,220.33(exc. VAT)
Temporarily out of stock
Eaton Eaton Moeller NZM Assembly Kit for use with N(S)1(-4), NZM1(-4), PN1(-4)
  • RS stock no. 246-005
  • Mfr. Part No. 125958 NZM1-XHB-DA-NA
Each
R 6,547.25(exc. VAT)
In Stock
Allen Bradley 1492 1492-SPM MCB, 2P, 32A Curve D, 277V AC, 96V DC, 10 kA Breaking Capacity
  • RS stock no. 125-1515
  • Mfr. Part No. 1492-SPM2D320
Each
R 1,274.49(exc. VAT)
Temporarily out of stock
Allen Bradley 140G Cover for use with Circuit Breaker
  • RS stock no. 255-1663
  • Mfr. Part No. 140G-J-TC3H
Each
R 1,480.51(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 85 kA
  • RS stock no. 209-7060
  • Mfr. Part No. 3VA2110-6KP46-0AA0
Each
R 29,804.81(exc. VAT)
Temporarily out of stock
Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 630A, Breaking Capacity 9 kA, Plug In
  • RS stock no. 253-185
  • Mfr. Part No. 192347 NZMH3-PX630-SVE
Each
R 85,740.65(exc. VAT)
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