Airtight Insulation System (casing) For Low Voltage Pole Mounted Circuit Breakers
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The Lv Pole Mounted Circuit Breakers circuit breaker's airtight insulation system, made of ceramic, glass, or glass-ceramic, consists of an airtight insulation cylinder, a movable end cover, a fixed end cover, and stainless steel bellows. This system is a vacuum-sealed container. To ensure the circuit breaker's airtightness, strict sealing procedures are required, as well as inherent material permeability and minimal internal outgassing.
