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Product focus: EFDC series with KC certification

Product focus: EFDC series with KC certification

Control and signalling units EFDC series are intended to be used in those areas in which, during the normal activities, explosive atmospheres caused by gases, vapours, mists and/or air/dust mixtures are likely to occur. This series can be used for the command and signalling of auxiliary circuits as well as instrument housings.
Nuova ASP EFDC Series is KC certified. KC (Korea Certification) is the mandatory national trademark needed to sell and ship products to the Korean market. It attests the compliance with Korea’s product safety requirements for electrical and electronic equipment and components with power between 50 and 1000 V AC.

Control and signalling units EFDC series consist of a body and one or more covers in copper-free aluminium alloy on which one or more operators can be mounted, such as:
• push-buttons
• lockable push-buttons
• signal lights
• mushroom push-buttons with break glass and hammer
• mushroom push-buttons
• mushroom push-buttons (stay put type)
• mushroom push-buttons (stay put type) + protection guard
• mushroom push-buttons with key lock
The internal electrical accessories should have the following nominal data:
• Push buttons: max. 660V – max. 10A
• Incandescent lamps: max. 240V – max. 3 W
• Neon lamps: max. 400V – max. 1 W
• Led lamps: max. 240V – max. 1 W
• Analog measuring instrument: max. 500V – max. 3VA
• Digital measuring instrument: max. 500V – max. 0,5VA

The series EFDC can be provided with different dimensions identified with an alphanumeric code:
– EFDC1 for single unit type, with 1 operator, with 2 entries ¾” NPT
– EFDC3 for single unit type, with 3 operators or 1 porthole, with 2 entries 1” NPT
– EFDC3D for double unit type (DUAL), with 3 operators or 1 porthole, with 2 entries 1” NPT
– EFDC3T for triple unit type (TRIAL), with 3 operators or 1 porthole, with 2 entries 1” NPT
– EFDC5 for type with square form, with 3 operators or 1 porthole, with maximum 2 entries 1” NPT or 1 entry 1 ½” NPT per side
– EFDC7 for single unit type, with 5 operators, with 2 entries ¾” NPT

Type of protection Ex d IIC T6 or T5
Ex tb IIIC T85°C or T100°C IP66
Ambient temperature -20°C …+40°C or -60°C …+40°C T6/T85°C
-20°C …+60°C or -60°C …+60°C T5/100°C
Degree of protection IP 66
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