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New EJBC series of explosion-proof enclosures for gas group IIC of Cortem Group

22 April 2021

The new enclosures of the EJBC series from Cortem Group are characterised by a multi-step joint that allows the installation in areas with danger of explosion and/or fire due to the presence of all the Gases of Group IIA - IIB - IIC classified as Zone 1, 2, 21, 22.

This is the element that distinguishes the new EJBC series enclosures from the historic EJB series enclosures characterised instead by a flat flanged joint and suitable for the IIB + H2 gas group. 

The multi-step joint has been designed with an angle that guarantees not only the precise coupling between body and cover, but also an easy opening/closing of the enclosure in case of maintenance, thanks to the high quality and precision of the mechanical processing.

The EJBC series is mostly used as a box to carry terminals and busbars, fuse carriers, transformers, reactors and barriers, though it is also used to produce control and signalling boards, light and power boards and surge arresters, and motor starter boxes with various configurations.

These enclosures are customized based on size, on the number of terminals or cables they are due to accommodate or considering the number of cable entries and cabling requirements inside a system. All terminals can be fitted with your requested accessories and mounted on special rails that are fastened to the enclosure's internal mounting frames. Terminal strips can be arranged in various ways, as specified by the customer and always within the limits allowed by the certificate. 

The options are vertical, horizontal, in several rows, or on different levels using suitable spacers. The quality of this product is recognized and valued the world over for its specific aluminium alloy and the mechanical property of its finishes.


• Group IIC: Acetylene (C2H2), Carbon disulphide, Hydrogen (H2)

• IP66/67

• Stainless steel hinges

• Available with round or square window for viewing analog or digital instruments


• Body and lid in low copper content aluminium alloy

• Stainless steel cover bolts

• Internal/external earth screws

• RAL 7035 polyester coating

• Galvanized steel mounting brackets

• Silicon gasket

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