Line bushings


dimension scetch of line bushing


General information

Line bushings are used to electrically connect equipment in potentially explosive atmospheres. The connection is always established either between a flameproof enclosure and an enclosure of another type of protection in accordance with DIN EN 60079-0. Alternatively, two flameproof enclosures are connected. Thus cables are protected from direct contact
Varying with the design, line bushings can be used in intrinsically safe, measuring, control or energy circuits. By the definition of the threads an adaption to a standard enclosure is very easy.
Standardized the threads are M8 up to M42 (up to M72 on request) with strands cross-section from 0.08mm² up to 185mm², variation on this must be approved by a notified body in the case of Ex application.
Very often the screwable line bushings are used to connect the 'increased safety' enclosure with a 'flameproof d-' enclosure.By this there is a direct connection between increased safety enclosure (Ex e) and flameproof enclosure(Ex e).
The advantage of this combination is that you have access to needed terminals and/or switches and the flameproof enclosure content the 'non ex' devices.
The table is an overview of the capabilty of the different sizes of line bushings for your orientation. If you need more wires within a special diameter, please contact us→, we will prove it at the line bushing itself.
Our line bushings got an 'X' approval und therefore these line bushing are useable everywhere(without additional approval work); also as replacement for existing line bushings.

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Wires quantity

wires amout  and quantity