A hoist motor on a ship-to-shore crane burns out. A compressor in a refrigerated warehouse seizes on a Friday night. A transformer feeding a bulk conveyor system arcs and fails. In each case the equipment is destroyed, the operation stops, and the commercial property policy does not respond. Not because of a limit, a deductible, or a coverage dispute, but because the property form excludes the cause of loss by design. Equipment breakdown coverage fills that gap. It is inexpen