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    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.

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    Consumer Units
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    Distribution Boards
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    Energy Monitoring Devices
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    Thermal Breakers

    37374 Products showing for Circuit Breakers

    4 of 999+
    RS PRO MCB, 2P, 20A Curve C, 240V AC, 240V DC, 10 kA Breaking Capacity
    • RS Stock No. 265-0183
    Each
    £19.41
    Murrelektronik Limited Electronic Circuit Breaker
    • RS Stock No. 123-6688
    • Mfr. Part No. 9000-41034-0100400
    Each
    £126.73
    Europa EUC1P EUC MCB, 1P, 4A Curve C, 230V AC, 10 kA Breaking Capacity
    • RS Stock No. 849-6490
    • Mfr. Part No. EUC1P4C
    Each
    £6.72
    RS PRO MCB, 3P, 6A Curve C, 240V AC, 240V DC, 10 kA Breaking Capacity
    • RS Stock No. 265-0209
    Each
    £27.54
    Europa EUB1 EUB MCB, 1P, 20A Curve B, 230V AC
    • RS Stock No. 798-2218
    • Mfr. Part No. EUB120B
    Each
    £3.88
    Better World
    Schneider Electric Acti 9 iC60H MCB, 3P, 40A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
    • RS Stock No. 791-3408
    • Mfr. Part No. A9F54340
    Each
    £110.76
    Europa 3 Phase Distribution Board, 12 Way, 125 A
    • RS Stock No. 849-6406
    • Mfr. Part No. TPN04
    Each
    £254.62
    Better World
    Schneider Electric RCBO, 6A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Acti 9 Range
    • RS Stock No. 790-9193
    • Mfr. Part No. A9D31806
    Each
    £141.41
    Better World
    Schneider Electric RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type A, Acti 9 Range
    • RS Stock No. 790-9204
    • Mfr. Part No. A9D31816
    Each
    £141.41
    Better World
    Schneider Electric Acti 9 iC60H MCB, 3P, 50A Curve D, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
    • RS Stock No. 791-3587
    • Mfr. Part No. A9F55350
    Each
    £138.73
    Europa EUC2P EUC MCB, 2P, 4A Curve C, 230V AC, 10 kA Breaking Capacity
    • RS Stock No. 849-6535
    • Mfr. Part No. EUC2P4C
    Each
    £14.62
    ABB System Pro M Compact S200M MCB, 1P, 6A Curve C, 253V AC, 72V DC, 10 kA Breaking Capacity
    • RS Stock No. 535-4138
    • Mfr. Part No. 2CDS271001R0064 S201M-C6
    Each
    £19.66
    Better World
    Schneider Electric Acti 9 iC60H MCB, 3P, 20A Curve D, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
    • RS Stock No. 791-3562
    • Mfr. Part No. A9F55320
    Each
    £108.22
    Contactum A Type RCD RCCB, 100A, 4 Pole, 100mA, Type A, 220 → 415V ac
    • RS Stock No. 240-6405
    • Mfr. Part No. CPR100010A
    Each
    £88.21
    RS PRO MCB, 3P, 63A Curve C, 240V AC, 240V DC, 10 kA Breaking Capacity
    • RS Stock No. 265-0210
    Each
    £34.12
    Eaton 1 Phase Distribution Board, 10 Way, 125 A
    • RS Stock No. 124-2997
    • Mfr. Part No. EAM10 EAM10
    Each
    £158.47
    Better World
    Schneider Electric Acti 9 iC60H MCB, 2P, 16A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
    • RS Stock No. 791-3344
    • Mfr. Part No. A9F54216
    Each
    £68.73
    Better World
    Schneider Electric Acti 9 iC60H MCB, 3P, 25A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
    • RS Stock No. 791-3394
    • Mfr. Part No. A9F54325
    Each
    £103.13
    Europa EUC3P EUC MCB, 3P, 16A Curve C, 230V AC, 10 kA Breaking Capacity
    • RS Stock No. 849-6585
    • Mfr. Part No. EUC3P16C
    Each
    £21.75
    Eaton 380 → 440V ac Undervoltage Release Circuit Trip for use with N(S)2(-4) Series, N(S)3(-4) Series, NZM2(-4)
    • RS Stock No. 537-5646
    • Mfr. Part No. 259594 NZM2/3-XUHIV380-440AC
    Each
    £163.76
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    Guides & Articles

    Article image
    RCBOs Guide
    There are many things to consider when choosing the right RCBO. Find out more in our comprehensive RCBOs guide.
    Read more
    Article image
    Distribution Boards Guide
    Our distribution boards guide explains what they are, their uses and types, and how to connect distribution boards.
    Read more
    Article image
    MCBs Guide
    What are MCBs and how do they work? Discover all you need to know in our comprehensive guide.
    Read more
    Article image
    A Complete Guide to Industrial Surge Protection
    Discover more in our guide and get to know the uses and importance of an industrial surge protection device.
    Read more

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