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Wylex Miniature Type B MCB's (7 results)

Wylex Miniature MCB circuit breakers compatible with Wylex NMX seamless all metal enclosures and Wylex NM all metal enclosures which are compliant with the new 18th Edition wiring regulations.


-Wylex NHXLB Miniature Circuit Breakers MCBs detect overcurrent’s due to both overload and fault currents.

-MCB will operate and interrupt the supply to prevent damage to the installation.

-DIN rail mounted, the Wylex NHXLB Domestic MCBs have a short circuit breaking capacity of 6kA.

-The current carrying capacity of the cable should always exceed the current rating of the MCB to prevent damage.

-MCBs have a positive indication for On or Off.

-The operating dolly may be locked in either the ON or OFF position without affecting the ability of the trip mechanism to operate.


Now available with the same sized matching NHXS miniature RCBOs that have an increased level of safety by including a switched neutral as standard, reducing installation and testing times therefore bringing costs down. A faulty or damaged circuit is fully isolated by disconnecting the live and neutral conductors. Healthy circuits remain in service, only the faulty circuit is switched off. This avoids danger and prevents inconvenience in the event of a fault (now required by regulation 314.1).


Wylex miniature RCBO’s require less space therefore providing more wiring space for the installer making the whole process easier and quicker.


During installation resistance testing live and neutral conductors do not have to be disconnected, this saves landlords time and money testing installations during occupancy voids.


Wylex NM All Metal Consumer Units

Wylex Miniature Type B RCBO's

Wylex Miniature Type C MCB's

Wylex Miniature Type C RCBO's

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