Well- Is it a Service disconnect? No because it doesn't contain the ability to disconnect the Service conductors. It is not a power panel due to the definition of a power panel found in 408.34 but it might be a Lighting and Appliance branch circuit panel board based on the same article. either way it is a code violation. Kinda a weird installation.
There is an outside chance that it might qualify for a single circuit Service Disconnect per 230.79 but we should have more information, particularly about the service conductors and their sizing.
