Low - voltage switchgear and controlgear for industrial use . mounting rails . top hat rails 75 mm wide for snap - on mounting of equipment . european standard en 50 023 工业低压开关和控制设备.支架型材.止动机构固定用宽度为mm的端头型材
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Low - voltage switchgear and controlgear for industrial use . mounting rails . top hat rails 35 mm wide for snap - on mounting of equipment . european standard en 50 022 工业低压开关和控制设备.支架型材.止动机构固定用宽度为mm的端头型材