Pollution degree classifications for outdoor circuit-breaker installationsHager’s Technical Training Manager, Paul Chaffers, discusses pollution degree classifications of circuit-breakers, considering the effects of external influences associated with outdoor installations. Pollution degrees help manufacturers and designers select appropriate circuit-breakers and enclosure designs based on the operating environment inside the enclosure. The presence of dust, moisture, or conductive particles can significantly degrade insulation performance, ...The post Pollution degree classifications for outdoor circuit-breaker installations appeared first on Professional Electrician.