All low-voltage switch gear and control gear assemblies in the European Economic Area must meet the new IEC 61439 standard. See what the important aspects of IEC 61439 are, that we adhere to in the manufacture of Cotmac Eelctronics Control Panels.

2. As with every component of an electrical installation, the
ASSEMBLY also has to comply with its appropriate standard.
New standards, namely IEC 61439, for low-voltage switchgear
and control gear Assemblies, has evolved over the past few
years. The purpose is to harmonize and define all general
requirements for low-voltage electrical Assemblies.

3. Key points of criticism about the pre norm EN (IEC) 60439
• Difficult to understand and execute.
• Grey areas leading to subjective interpretations
• Poor structured content
• TTA / PTTA dilemma.
• Misinterpreted categories
• Limited applicability
• Useless classification for end customers
• EN (IEC) 60439 part 1 with double function
• Product standard
• General requirements for all other standards of this series
• Some manufacturer and specific market segments are ignoring
the EN (IEC) 60439.

5. Additional verification:
New requirements from the standard IEC 62208
(Empty enclosures for Assemblies) have been added:
• Verification of resistance to UV radiation for outdoor
plastic enclosures.
• Verification of corrosion resistance.
• Mandatory declaration and confirmation of an impulse
rating.
• Lifting, mechanical impact and marking.
Other Changes:
Temperature rise - one of the following methods is allowed for verification:
• Testing with current
• Derivation (from a tested design) of ratings for similar variants calculation

6. Internal electric circuits and connections

7. 168. ‘S’ BLOCK. MIDC BHOSARI PUNE 411026. MAHARASHTRA. INDIA
LANDLINES – (+9120)30687200/120
EMAIL – info@cotmac.io
2/3/2018