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Hydrogen Technologies Standards form the basic framework for market ramp-up
More information
Climate change Standards and specifications support climate targets
More information
Smart Farming Standards and specifications are drivers for the digitalization of agriculture
More information

Standards [CURRENT]

IEEE C 37.21a
IEEE Standard for Control Switchboards - Amendment 1: Control and Secondary Circuits and Devices, and All Wiring

Edition 2020

Original language English

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Hydrogen Technologies Standards form the basic framework for market ramp-up

Climate change Standards and specifications support climate targets

Smart Farming Standards and specifications are drivers for the digitalization of agriculture

IEEE C 37.21a IEEE Standard for Control Switchboards - Amendment 1: Control and Secondary Circuits and Devices, and All Wiring

Want to learn more?

IEEE C 37.21a
IEEE Standard for Control Switchboards - Amendment 1: Control and Secondary Circuits and Devices, and All Wiring