Load disconnector for operating switching contact of medium voltage system, has blocking device provided for spring force drive, which maintains spring in tightening position before reaching dead center positioning of spring

摘要

The disconnector has an engaging and disengaging spring, a switching shaft (2) and a spring force drive for switching movement engaged at the shaft. The shaft supports the switching contact. A blocking device (1) is provided for the spring force drive, which maintains the spring in a tightening position before reaching a dead center positioning of the engaging spring. A driver (3) is arranged at the switching shaft in a detachably fixed manner, and a mechanical and/or electrical locking device is provided.