From the service tech's perspective, the PB is the disconnect. I submit that, from a code perspective, the PB+contactor (not just the PB, not just the contactor) is the disconnect and is allowed. Per 100.A, Disconnecting Means "A device, or group of devices, or other means by which the conductors of a circuit can be disconnected from their source of supply". Because the PB is the only method of operating the contactor, and that PB is within sight of the spa, the combination of PB+contactor met the requirements. This was discussed with and approved by the AHJ before installation.
The main purpose of the PB+contactor was to provide an unobtrusive service disconnect in a custom room built for the spa. It also happens to provide an emergency shutoff for the spa, even though this was not required for a residential installation.
[This message has been edited by rlrct (edited 09-29-2004).]
