Equipment breakdown insurance covers mechanical and electrical failures that cause sudden physical damage to machinery, while commercial property insurance covers external perils such as fire, wind, or theft but explicitly excludes internal mechanical malfunction.Â
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The Insurance Services Office (ISO) equipment breakdown coverage forms address the gap left by standard property policies, which operate under the principle that normal wear and tear, gradual deterioration, and inherent mechanical failure are maintenance issues rather than insured losses.
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Commercial property insurance responds to external events that damage equipment. A fire that destroys a CNC machine triggers a property insurance claim, as does theft of manufacturing equipment or wind damage to HVAC systems. The policy protects against sudden and accidental direct physical loss from covered perils listed in the policy form.Â
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Standard ISO commercial property forms CP 00 10 and CP 00 30 explicitly exclude loss caused by mechanical breakdown, electrical arcing, steam pressure rupture, or centrifugal force damage unless fire or explosion ensues.
Equipment breakdown insurance fills this mechanical failure gap by covering sudden and accidental breakdown of pressure vessels, electrical equipment, mechanical equipment, and turbine machinery. When a CNC machine’s spindle motor fails due to electrical arcing and damages the workpiece and tooling, equipment breakdown insurance responds while property insurance does not.
The coverage includes spoilage of raw materials or work-in-progress caused by equipment failure, such as when refrigeration breakdown ruins temperature-sensitive materials. Expediting expenses—costs to temporarily repair equipment or rush replacement parts—are included under equipment breakdown policies but excluded from property coverage.
The critical distinction operates at the point of damage origin.
Property insurance covers damage flowing inward from external sources, while equipment breakdown coverage addresses damage flowing outward from internal mechanical or electrical malfunction.
A lightning strike that damages a transformer is a property insurance claim, but the transformer’s subsequent failure due to internal electrical breakdown becomes an equipment breakdown claim.
Many insurers now offer equipment breakdown as an endorsement to commercial property policies rather than separate coverage, but the fundamental coverage distinction remains unchanged.
Business interruption coverage for equipment-related income loss requires equipment breakdown insurance as the underlying trigger. Property insurance business interruption responds only to losses caused by covered property perils, not mechanical breakdown.
Manufacturers financing equipment through lenders typically face requirements for both property insurance and equipment breakdown coverage, as lenders seek protection for collateral value against all forms of physical damage.
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