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English to Portuguese translations [PRO] Tech/Engineering - Engineering: Industrial / industrial furnace
English term or phrase:IP e N.B.
"LEVEL OF PROTECTION OF THE PUSH BUTTON STRIPS
IP43 = protected against the penetration of objects with a diameter greater than 1 mm and against driving rain for 10 min. with a maximum angle of 60° from vertical.
IP54 = protected against the intrusion of dust and against driving rain for 10 min. from all directions."
Qual seria a traducao das abreviacoes/siglas: IP e N.B. ?