prEN IEC 63418:2025

This document applies to fixed accessories designed to supply power at Extra Low Voltage through a USB port connected to a fixed installation not exceeding 250 V AC or to an extra low voltage DC local / private distribution network not exceeding 60 V, intended for household and similar purposes, either indoors or outdoors.
This document covers only those requirements for mounting boxes which are necessary for the tests on the accessory.
NOTE 1 Requirements for general purpose mounting boxes are given in IEC 60670-1.
This document defines the safety and EMC requirements for accessories that supply power through an interface.
Specifications, performance or dimensional requirements of the USB technology are not covered by this standard; these are defined in the relevant part(s) of IEC 62680.
NOTE 2 Requirements concerning wireless interface are under consideration.
The document does not apply to:
– Socket-outlets incorporating USB power supply, covered by IEC 60884-3-1;
– Transformers, reactors, power supply units and combinations thereof, covered by IEC 61558 series;
– Power electronic converter systems and equipment covered by IEC 62477-1;
– Electrical power/energy transfer systems for electrically propelled road vehicles and industrial trucks covered by IEC 61980 series;
– Electric Vehicles conductive power supply system covered by IEC 61851 series;
– Appliance couplers for household and similar general purposes covered by IEC 60320 series;
– DC plugs and socket-outlets systems covered by IEC / TR 62735 series;
– Luminaires couplers covered by IEC 61995 series;
– Equipment in the field of audio/video and similar technology, information technology and communication technology covered by IEC 62368 series.
– Power supply using communication cabling such as PoE.
Accessories complying with this document are suitable for use at ambient temperatures not normally exceeding +40 °C, but their average temperature over a period of 24 h does not exceed +35 °C, with a lower limit of the ambient air temperature of −5 °C.
This document gives additional requirements for accessories provided with insulation-piercing terminals, see C (normative).