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High-Performance MCB Devices

Our extensive collection of MCB devices are a vital part of any electrical system. These Miniature Circuit Breakers automatically interrupt the power supply when an overcurrent or short circuit is detected in a circuit, preventing damage to wiring and connected appliances. Unlike traditional fuses, an MCB can be easily reset after a trip, which makes them an essential component for modern consumer units.

We offer MCBs in various ampere ratings and with different tripping characteristics to suit diverse applications. For example, "B curve" MCBs are ideal for residential use, protecting against moderate overloads, while "C curve" MCBs are more tolerant to higher inrush currents, making them suitable for commercial and industrial settings with appliances like motors or fluorescent lighting. All our MCBs are designed to comply with the latest safety standards and feature easy DIN rail mounting. Whether you need them for a new installation, to replace an old fuse box, or to add to an existing panel, selecting the correct MCB ensures your electrical system continues to run smoothly and safely.

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    Hager

    Hager MTN150 50A Single Pole 1 Module B Curve 6KA MCB Device

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    Hager 50A Single Pole 1 Module B Curve 6KA MCB Device Features of MCB Devices Type B tripping characteristics complies with BS EN 60898 Calibrat...

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    FuseBox

    FuseBox MT06B501 50A Single Pole 1 Module B Curve 6kA MCB

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    IN STOCK

    FuseBox 50A Single Pole 1 Module B Curve 6kA MCB Circuit Protection – MCBs Devices A range of thermo-magnetic, current limiting MCBs available w...

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    £1.99 - £1.99
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    FuseBox

    FuseBox MT06C501 50A Single Pole 1 Module C Curve 6kA MCB

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    IN STOCK

    FuseBox 50A Single Pole 1 Module C Curve 6kA MCB Circuit Protection – MCBs Devices A range of thermo-magnetic, current limiting MCBs available w...

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    £2.09 - £2.09
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    Wylex

    Wylex NHXLB50 50A Single Pole Type B Curve 6kA MCB

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    Wylex 50A Single Pole Type B Curve 6kA MCB Features Single pole MCB, 50A B curve Energy limiting Class 3 Quick release DIN clip No miss busbar...

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  • BG CUMC50 50A Single Pole 1 Module 6kA C Curve MCB - westbasedirect.com
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    BG Electrical

    BG CUMC50 50A Single Pole 1 Module 6kA C Curve MCB

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    IN STOCK

    BG 50A Single Pole 1 Module 6kA C Curve MCB Features of the Consumer Units range Lockable cover option available Easy access of cables via knoc...

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  • BG CUMB50 50A Single Pole 1 Module 6kA B Curve MCB - westbasedirect.com
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    BG Electrical

    BG CUMB50 50A Single Pole 1 Module 6kA B Curve MCB

    Availability:
    IN STOCK

    BG 50A Single Pole 1 Module 6kA B Curve MCB Features of the Consumer Units range Lockable cover option available Easy access of cables via knoc...

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    £2.24 - £2.24
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    Schneider Electric

    Schneider Electric EZ9F16150 50A Single Pole B Curve 6kA MCB

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    IN STOCK

    Schneider Electric EZ9F16150 50A Single Pole B Curve 6kA MCB Product Description This Easy9 product is a low voltage miniature circuit breaker (M...

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    Click Elucian

    Click Elucian CU1MCB50C 1 Pole 6kA C Curve 50A MCB

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    Dispatch in 1-2 Days

    Click Elucian CU1MCB50C 1 Pole 6kA C Curve 50A MCB This item is 1P 6kA C Curve 50A MCB Features 50A 6kA C Curve Single Pole Large Terminal Cap...

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    Click Elucian

    Click Elucian CU1MCB50B 1 Pole 6kA B Curve 50A MCB

    Availability:
    IN STOCK

    Click Elucian CU1MCB50B 1 Pole 6kA B Curve 50A MCB This item is 1P 6kA B Curve 50A MCB Features 50A 6kA B Curve Single Pole Large Terminal Cap...

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    Wylex

    Wylex NHXLC50 50A Single Pole Type C Curve 6kA MCB

    Availability:
    IN STOCK

    Wylex 50A Single Pole Type C Curve 6kA MCB Features Single pole MCB, 50A C curve Energy limiting Class 3 Quick release DIN clip No miss busbar...

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    £2.75
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    Wylex

    Wylex NHXC50 50A Single Pole Type C Curve 6kA MCB

    Availability:
    IN STOCK

    Wylex 50A Single Pole Type C Curve 6kA MCB Features Single pole MCB, 50A C curve Energy limiting Class 3 Balcony terminal position Data Sheet...

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    Wylex

    Wylex NHXB50 50A Single Pole Type B Curve 6kA MCB

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    IN STOCK

    Wylex 50A Single Pole Type B Curve 6kA MCB Features Single pole MCB, 50A B curve Energy limiting Class 3 Balcony terminal position Data Sheet:...

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    LIVE Electrical

    LIVE Electrical CA150B Single Pole 50A B Curve 6kA MCB

    Availability:
    IN STOCK

    LIVE Electrical CA150B Single Pole 50A B Curve 6kA MCB Product Description Single Pole 6kA Miniature Circuit Breakers (MCB) Specification: Rated c...

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    £2.52
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    Crabtree 61/B50 Starbreaker 50A Single Pole B Curve 6kA MCB

    Crabtree
    Availability:
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    Crabtree 61/B50 Starbreaker 50A Single Pole B Curve 6kA MCB Product Description 50A SP Type B 6kA MCB Features Single pole MCB, 50A B curve Energ...

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    Crabtree 61/C50 Starbreaker 50A Single Pole C Curve 6kA MCB

    Crabtree
    Availability:
    IN STOCK

    Crabtree 61/C50 Starbreaker 50A Single Pole C Curve 6kA MCB Product Description 50A SP Type C 6kA MCB Features Single pole MCB, 50A C curve Energ...

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    £4.20
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    £4.20
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    £2.52
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    LIVE Electrical

    LIVE Electrical CA150C Single Pole 50A C Curve 6kA MCB

    Availability:
    Dispatch in 2-5 Days

    LIVE Electrical CA150C Single Pole 50A C Curve 6kA MCB Product Description Single Pole 6kA Miniature Circuit Breakers (MCB) Specification: Rated c...

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    £2.52
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    £2.52
    £1.97 Inc VAT
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    LIVE Electrical

    LIVE Electrical CA250B Double Pole 50A B Curve 6kA MCB

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    Dispatch in 2-5 Days

    LIVE Electrical CB250B Double Pole 50A B Curve 6kA MCB Product Description Double Pole Miniature Circuit Breakers (MCB) 6kA LIVE Electrical Catalo...

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    LIVE Electrical

    LIVE Electrical CA250C Double Pole 50A C Curve 6kA MCB

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    Dispatch in 2-5 Days

    LIVE Electrical CB250C Double Pole 50A C Curve 6kA MCB Product Description Double Pole Miniature Circuit Breakers (MCB) 6kA LIVE Electrical Catalo...

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    LIVE Electrical

    LIVE Electrical CA350B Triple Pole 50A B Curve 6kA MCB

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    Dispatch in 2-5 Days

    LIVE Electrical CA350B Triple Pole 50A B Curve 6kA MCB Product Description Triple Pole Miniature Circuit Breakers (MCB) 6kA LIVE Electrical Catalo...

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    LIVE Electrical

    LIVE Electrical CA350C Triple Pole 50A C Curve 6kA MCB

    Availability:
    Dispatch in 2-5 Days

    LIVE Electrical CA350C Triple Pole 50A C Curve 6kA MCB Product Description Triple Pole Miniature Circuit Breakers (MCB) 6kA LIVE Electrical Catalo...

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    £5.88 - £5.88
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    LIVE Electrical

    LIVE Electrical CA450B 4 Pole 50A B Curve 6kA MCB

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    Dispatch in 2-5 Days

    LIVE Electrical CA450B 4 Pole 50A B Curve 6kA MCB Product Description 4 Pole Miniature Circuit Breakers (MCB) 6kA LIVE Electrical Catalogue: Click...

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    LIVE Electrical

    LIVE Electrical CA450C 4 Pole 50A C Curve 6kA MCB

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    Dispatch in 2-5 Days

    LIVE Electrical CA450C 4 Pole 50A C Curve 6kA MCB Product Description 4 Pole Miniature Circuit Breakers (MCB) 6kA LIVE Electrical Catalogue: Click...

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    LIVE Electrical

    LIVE Electrical DCM250C Double Pole 50A C Curve 6kA DC MCB

    Availability:
    Due 22/10/2025

    LIVE Electrical DCM250C Double Pole 50A C Curve 6kA DC MCB Product Description Double Pole (2 Pole) 6kA DC Miniature Circuit Breakers LIVE Electri...

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