Universal Serial Bus interfaces for data and power - Part 4-1: Universal Serial Bus 4 - Specification (IEC 100/3754/CDV) (english version)
Edition 2022-06-15

Solar thermal electric plants - Part 4-1: General requirements for the design of solar tower plants (IEC 117/118/CDV) (english version)
Edition 2020-06-15

Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 4-1: Low voltage decoupling filters - Generic specification (german version)
Edition 2024-03-01

Fibre management systems and protective housings to be used in optical fibre communication systems - Product specifications - Part 4-1: Passive optical street cabinet for category A (german version)
Edition 2020-08-01

Information technology - Data centre facilities and infrastructures - Part 4-1: Overview of and general requirements for key performance indicators (german version)
Edition 2017-08-01

Household appliances network and grid connectivity - Part 4-1: Communication Protocol Specific Aspects: SHIP 1.1 (english version)
Edition 2021-12-01

Digital audio interface - Part 4-1: Professional applications - Audio content ( IEC 60958-4-1:2016) (german version)
Edition 2017-03-01

Optical amplifiers - Test methods - Part 4-1: Gain transient parameters - Two-wavelength method (IEC 61290-4-1:2016) (german version)
Edition 2017-07-01

Electrostatics - Part 4-1: Standard test methods for specific applications - Electrical resistance of floor coverings and installed floors (IEC 61340-4-1:2003 + A1:2015) (german version)
Edition 2016-05-01

Dynamic modules - Part 4-1: Software and hardware interface - 1 x 9 wavelength selective switch ( IEC 62343-4-1:2016) (german version)
Edition 2017-03-01