57 Series porcelain line post insulators designed for medium-voltage overhead lines and substations. ANSI-compliant, durable glazed porcelain construction with long service life.
The ANSI 57 Series Porcelain Line Post Insulators are designed for overhead distribution lines, substations, switchgear, and utility transmission systems.
Manufactured from premium electrical-grade porcelain, these insulators provide reliable conductor support, superior electrical insulation, and high mechanical strength under various environmental conditions.
The series includes 57-31, 57-32, 57-33, 57-34, and 57-35 models, widely used in medium-voltage distribution networks worldwide.