What type of access is indicated by bolted equipment enclosure doors in regards to adjustable-trip circuit breakers?

Bolted equipment enclosure doors indicate restricted access to the equipment contained within. This type of access is typically implemented for safety and security reasons, especially when dealing with electrical components like adjustable-trip circuit breakers. Restricted access means that only authorized personnel, typically trained or qualified individuals, are allowed to enter the enclosure to make adjustments, conduct maintenance, or perform inspections.

The design of bolted doors serves as a physical barrier to prevent unauthorized or accidental access, which could pose safety risks or lead to equipment damage. It also emphasizes the importance of controlling who can interact with the equipment to protect both the individuals and the integrity of the electrical system. In contrast, unrestricted access would imply that anyone could approach and enter the enclosure, which would be inappropriate in environments where safety and operational integrity are paramount.