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Standard

IEC 60670-1:2024

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Abstract

IEC 60670-1:2024 applies to boxes, enclosures and parts of enclosures (hereafter called "boxes" and "enclosures") for electrical accessories with a rated voltage not exceeding 1 000 V AC and 1 500 V DC intended for household or similar fixed electrical installations, either indoors or outdoors. Boxes and enclosures complying with this document are suitable for use at ambient temperatures not normally exceeding +40 °C, but their average over a period of 24 h does not exceed +35 °C, with a lower limit of the ambient air temperature of −5 °C. Other temperatures outside the above range can apply according to the classification of the boxes and the enclosures. This document is intended to apply to boxes and enclosures for electrical accessories within the scope of IEC technical committee 23. This third edition cancels and replaces the second edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the classifications, markings and tests of boxes and enclosures for use and installation in ambient temperature below normal use are modified; b) the test for the durability of markings is modified; c) a test is added for fixing screws protected by caps; d) a normative annex is added to specify the tests applied to boxes and enclosures declared with an IK code; e) requirements for the resistance to abnormal heat and fire of internal parts not necessary to retain current carrying parts are specified.

Document information

  • Standard from IEC
  • Published:
  • Edition: 3
  • Document type: IS
  • Publisher IEC
  • Distributor IEC
  • ICS 29.120.10
  • ISO TC TC 23/SC 23B

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