Rozpojilo

Rozpojilo is a Czech term that can refer to either the act of disconnecting an electrical circuit or, more commonly in technical contexts, a device that performs that function. The word is derived from the verb rozpojit, meaning to disconnect or detach, with a suffix that forms a noun referring to an instrument or device.

In electrical engineering, rozpojilo is typically used as a noun to denote a disconnector, or disconnect switch. A disconnector is a switching device that provides a visible separation of a portion of a power line or equipment from the rest of the installation to ensure safe maintenance and to clearly indicate an isolated section. Disconnectors are designed to isolate circuits and are usually operated only when the circuit is de-energized or under conditions approved by safety procedures. They are often installed in outdoor switchyards or on supporting structures and can be configured in various mechanical layouts, including single- or multi-break arrangements. They are generally used in conjunction with other protective devices, such as circuit breakers, which handle fault currents.

The term appears in Czech-language technical manuals, schematics, and regulatory documents to distinguish the isolation action from other protective devices. When more precision is needed, qualifiers such as rozpojovací vypínač (disconnect switch) or specifications like voltage level and breaking arrangement are added.

See also Rozpojení, Rozpojovací vypínač, Vypínač, Izolace.