Features of Mersen Enclosures

Mersen's MJ-range of Enclosures consists of 13 box sizes in three versions (with screw cover, with stainless steel hinges, and with plastic hinges) and are available in 2 cover options (opaque cover, flush bonded window) on certain size enclosures. The bases and covers are made of hot compression molded fiberglass reinforced polyester (thermoset). They come complete with 4 threaded brass inserts for fixing a mounting plate. The box can be readily worked with conventional tools, such as drills, cutting mills, saws, punches, etc. MJ polyester boxes are maintenance-free and corrosion resistant.


Special Versions

Cabinets can be ordered with preformed cutouts to suit your application and factory equipped and wired according to customer requirements




Approvals and Ratings

MJ-boxes are UL listed and CSA approved types 1, 3R, 4X, 6P, 12

Flammability rating UL94-5V

Cover flammability UL94-V0

Window flammability UL94-HB

NFPA No. 101 flame spread class A (1)

Self extinguishing, non-haloginated, non flame propagating

Temperature range enclosure (-76°F to +274°F) (-60°C to +134°C)

Temperature range window (-26°F to +170°F) (-32°C to +76°C)


Surge Protection

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