Switch-Disconnector-Fuse

Switch-Disconnector-Fuse


Switch-Disconnector-Fuse


Switch-Disconnector-Fuse Range FN & FNX

  • S-D-F range covers ratings from 32A to 800A. S-D-F’s range is available in both open execution & Sheet steel enclosure version (Suitable for 14x51 Cylindrical, DIN, BS type fuse-link)
  • S-D-F range provides users with a high level of safety & Convenience. The complete range conforms to IS/ IEC60947-3 standards.
  • It also carries the CE marking signifying compliance to stringent European safety norms.
  • S-D-F's superior features translate into better safety & convenience for the users.
  • Fuse barriers & Terminal shrouds provide protection against accidental direct contact. Terminal shrouds also protect against phase to phase short circuit through an external conducting path.
  • Double isolation of fuses when S-D-F is in OFF position makes replacement of fuses risk-free.
  • Positive ON / OFF indication ensures that the handle indicates OFF position only when main contacts are actually open.
  • Large ground clearance eliminates possibility of phase to ground flash over.
  • Built-in padlocking arrangement provided to lock the unit in OFF position prevents inadvertent operation of the unit.

Versatile handle

  • Door interlock (defeatable)
  • Padlock up to 3 locks
  • Choice of operating quadrant
  • Flexibility (± 3mm mismatch operational quadrant)

The Switch-Disconnector-Fuse provides complete Flexibility in mounting; Unit can be mounted at any angle in a vertical plane.


Handle depth can be varied and fixed as per requirement during installation. This is possible because the telescopic shaft can be adjusted for stepless variable depth.