Two men posing as Con Ed workers forced their way into a 26-year-old woman’s Bronx home Monday afternoon, tied her up to a coffee table and sexually assaulted her at knife-point before robbing her, police sources said.

The men knocked on the woman’s door on Magenta Street in Williamsbridge at 1:15 p.m. and identified themselves as electric-company workers before pushing their way inside.

They used a knife from her kitchen to threaten her while touching her privates, the sources said. The men ransacked her apartment before fleeing with $50.