Miniature housings for electronics

August 2003 Enclosures, Cabling & Connectors Surveillance

Erni fully insulated terminal housings meet requirements falling between single card enclosures and 19" racks. Suitable for housing microcomputer systems, electronic control, fault signalling systems, decentralised control modules, data transmission systems and the like, they meet machine construction and automotive industry regulations with safe-touch terminals, are easy to assemble and dismantle and can be furnished with ventilation holes in the polycarbonate base.

The smaller range of LDG-A housings provide a facility for insertion of two longitudinally aligned boards and on board as cross connection and as location for control and display elements. The housing bases can be screwed onto mounting panels and have a snap-on fixing to standard DIN 46277 rails and DIN EN 50022 rack assemblies. The afford IP40/IP20 protection with/without mounted terminals and can be used over a temperature range of -40 to + 110°C. Units have a standard height of 110 mm, length of 75 mm and come in widths of 22,5, 45, 55, 99,7, 150 and 225 mm with 12, 14, 16, 30, 46, and 70 terminals, respectively.

LDG-A expansion elements include an aluminium covering for the housing base that serves as a mounting and guide element for PC boards and output plug; frame insert; plug insert with integrated 17 pole multipoint connector; and blanking insert for complete covering of the base housing. Depending on assembly, the frame insert offers a maximum mounting area for components or additional fitting of a transverse board.

The larger LDG-D Series of housings are available in three sizes with 6, 10, and 20 terminals with standard length of 70 mm, width of 25, 50, and 100 mm and heights of 130/100 mm. Almost all direct connectors such as DIN 41612, 41613, 41617 or 41651 can be fitted, as well as other families, using mounting bars or suitably pre-assembled units.

A further series of compact LDG-M4 housing constructed to DIN EN 50041 provide insulated cubical enclosures for proximity switches and momentary-contact limit switches. They can be screwed down or fitted with an adapter for rail mounting. Overall dimensions are 94 x 42 x 42,5 mm.

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