What does this ladder logic schematic showing a coil in parallel(?) with a contact mean?
The PR1 contact should not truly be connected in parallel with the T1 coil:
If it were, energizing coil PR1 (e.g. by pressing the &quot;FIRE&quot; button) would short Line and Neutral and blow the fuse.
Most likely device TR is not a typical relay (or even a typical timer relay).  It's always connected to L and N, so always energized.
Most likely the two extra terminals on TR control it's behavior.  Maybe it is a reset or start input to initiate a timer interval?