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Din-rail terminals with ATEX approval

21 August 2008

IMO has gained ATEX approval (EX II 2GD Ex e II) for its Type ER range of feed-through, DIN rail terminals, and also for three sizes of its ERPE Din rail earth terminals, making both types suitable for operation in potentially explosive atmospheres 94/9/EC.

The ER ATEX range is available in seven sizes, offering ratings from 630V (21A), to 1000V (167A) in cable sizes from 0.5mm² to 16mm², for solid conductors, and 1.5mm² to 70mm² for fine strand conductors. In addition, three sizes of ATEX approved earth terminals are offered: the ERPE2.5/4 (2.5mm²/4mm²), ERPE6/10 (6mm²/10mm²) and ERPE16/35 (16mm²/35mm²).

The ER DIN rail mounted terminals are easy-to-use, robust and reliable units. They comprise a pair of single pole, feed-through terminal assemblies that are mounted into moulded (natural or coloured) insulation housings. Each terminal assembly consists of an electroplated copper current bar with screw clamping yokes that are zinc plated to increase their resistance to corrosion.

The terminal housings are manufactured from engineering thermoplastic Polyamide 6.6. This material has excellent electrical, mechanical and chemical characteristics, even at temperatures as high as 85ºC (100ºC for standard ER range), and offers the additional advantages of containing no cadmium-based pigments. In addition, the Polyamide 6.6 moulded housings absorb humidity from their surroundings, making the plastic material elastic and fracture proof, even at temperatures down to -20ºC (-40ºC for standard ER range).

IMO is supporting the launch of its new ATEX DIN rail terminals range with an instruction sheet that provides safe installation notes and details precautions for installation and use of the terminals and has produced a new 63-page catalogue detailing its full range of DIN Rail Terminals and accessories.

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