Switch with fuse 4-pole 250 A / T1.NH1 4-pole load-break switch with NH fuses 250A (not included in delivery), for attachment to a mounting plate, suitable for switching on and off under load. Tested according to IEC 60947-3. Safety separation and protection against overcurrents in all low-voltage circuits is provided by NH fuses. With double interruption per phase and switch position indicator.