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pararrayos, limitadores de tensión y descargadores de sobretensión, para una tensión superior a 1 kv
lightning arresters, voltage limiters and surge suppressors for a voltage > 1 kv
los elementos separadores galvánicos no se deben confundir con descargadores de sobretensión, que a menudo se ofrecen falsamente para el mismo objeto:
electrical isolators are not to be confused with surge protectors that are often incorrectly marketed for the same purpose: