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UL 98 Fusible & Non-Fusible


Fusible & Non-Fusible Disconnects


The Power Products line now includes 600 VAC / 250 VDC heavy-duty fusible and non-fusible electrical disconnects from Ferraz Shawmut. The new SIRCO and FUSERBLOC series meet UL98 standards and are UL, CSA, CE and IEC rated. The series is designed with the most up-to-date power disconnect technology available - "make and break" power circuits on load. In addition, a wide array of handles is available, meeting OSHA padlocking requirements, NEMA configurations, defeater options and NFPA 79 requirements.

These electrical disconnect switches fully comply with the following requirements of the NFPA79 standard*:
  • Isolate the electrical equipment from the supply circuit and have one "OFF" (open) and one "ON" (closed) position only
  • Have an external operating means
  • Be provided with a permanent means permitting it to be locked in the "OFF" (open) position only independent of door position
  • Be operable, by qualified persons, independent of the door position without the use of accessory tools or devices
All disconnect switch contacts work independently of the speed and force of the operator providing better electrical characteristics.

Switches up to 400 amps use silver-tipped contacts technology providing the following advantages:
Best solution for harsh environments
High on-load break characteristics
Longer mechanical and electrical life
Maintenance free switches without grease

Switches above 400 amp use a self cleaning moving technology allowing high short-circuit withstand.

IEC 947-3 standard
Positive opening operation safeguards users in the case of welded contacts due to an overload or short circuit. The handle cannot reach the "OFF" position unless the contacts are truly open. According to the IEC 947-3 standard**, if the contacts are welded due to an overload or short-circuit:
  • the switch will not reach the "OFF" position
  • and cannot be padlocked in this position as long as operating force applied to the operating mechanism is less then three times the standard operating force.

DIN Rail Mount Fusible Disconnect Switches (1-30 Amps, CFS Series)DIN Rail Mount Fusible Disconnect Switches (1-30 Amps, CFS Series)
Lockout / Tagout capability and finger safe construction to promote safe workplace practices by preventing contact with live components.
  • Class CC fuse version
  • 200kA Short-Circuit Current Rating (SCCR) with Class CC fuses meets high assembly SCCR and reduced personal protective equipment (PPE) requirements
  • Full voltage rating up to 600 VAC allows installation flexibility versus slash-rated devices at 480/277 VAC
  • Horsepower rated for protecting motor circuits with Class CC fuses
  • UL 98 disconnect rated for protection of branch circuits
  • 35mm DIN-rail mountable, utilizing spring clip

Panel-Mount Fusible Disconnect Switches (30-200 Amps, FB Series)Panel-Mount Fusible Disconnect Switches (30-200 Amps, FB Series)
  • Double break contacts per pole up to 200 Amps
  • Touch-safe fuse covers and line shrouding standard
  • Service entrance rated, Compact footprints, Front operated switches
  • Defeatable pistol handles automatically re-latch when panel door is closed - no tool necessary to reset latch
  • External or direct operation disconnect handles

Panel-Mount Non-Fusible Disconnects (30-800 Amps, SC Series)Panel-Mount Non-Fusible Disconnects (30-800 Amps, SC Series)
  • 600 VAC, 250 VDC
  • 30, 60, 100, 200, 400, 600, and 800 amp disconnects
  • Service entrance rated, Compact footprints, Front operated switches
  • Visible blade contacts up to 400A
  • Defeatable pistol disconnect handles automatically re-latch when panel door is closed - no tool necessary to reset latch
  • External or direct operation disconnect handles

  • Handles & ShaftsHandles & Shafts
    • Operator Shaft, Type D
    • Operator Shaft, Type G
    • Operator Shaft, Type H (SC Series only)
    • Direct Operation Disconnect Handles
    • Black Pistol Disconnect Handles, NEMA 12, NEMA 4X
    • Red and Yellow Pistol Disconnect Handles, NEMA 12, NEMA 4X>

    Lugs & AccessoriesLugs & Accessories
    • Auxiliary Contact Holders for Disconnect Switches
    • Auxiliary N.O. Contact for Disconnect Switches
    • Auxiliary N.C. Contact for Disconnect Switches
    • Terminal Lug Kits for Disconnect Switches
    • Terminal Shroud Kits for Disconnect Switches
    • Terminal Screen Kit for Disconnect Switches (SC Series only)
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