Home > categories > Electrical Equipment & Supplies > Relays > Thermal relay electrical symbols are how old and new ah,
Question:

Thermal relay electrical symbols are how old and new ah,

Thermal relay electrical symbols are how old and new ah,

Answer:

1, the old and new standards that: New standard: FR; old standard: RJ The old standard used in the traditional Chinese Pinyin, referred to as RJ And now collectively referred to as the international, referred to as FR
May 9, 2017
2, the origin: thermal relay is a foreign language, from the Japanese サ ー マ ル リ レ ー, English is: from the thermal relay.
May 9, 2017

Share to: