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Variable speed drive Mounting Techniques

Most small variable speed drives are mounted in rack slots or on a DIN rail. The clips for mounting to the DIN rail are usually built into the fins of the heat sink to which the variable speed drive is mounted. This makes them easily installable in control cabinets. Larger variable speed drive units usually have through-hole mounting to accommodate individual fasteners. The fastening method should be adequate to support the weight of the variable speed drive & allow the free flow of air across the heat sink; airflow in some applications is aided by a cooling fan.