Square D 9999SF4 Fuse Holder Cc Class

Product Description

The SQUARE D 9999SF4 is a fuse holder designed to accept CC class fuses in control and protection circuits. It provides a secure, replaceable mounting point for CC class fuses within motor control centers, starters, and similar industrial or commercial electrical enclosures. Licensed electricians and controls technicians install this component during panel builds, equipment servicing, and fuse replacement procedures. At 4.5 inches long, 3 inches wide, and 1.5 inches tall, it fits standard enclosure layouts without modification. Weighing 0.23 pounds, it is a compact, low-profile component suited for tight panel installations.

This fuse holder is used in commercial and industrial electrical applications where CC class fuse protection is required. Typical install scenarios include motor control panels, HVAC equipment control circuits, and industrial automation enclosures. It serves as a direct replacement component when existing fuse holders show wear, corrosion, or physical damage that compromises fuse seating or circuit integrity. The compact footprint makes it practical for both new panel builds and retrofit service work.

Key Features

• Compatible with CC class fuses for motor control and circuit protection applications
• Compact dimensions: 4.5 inches long, 3 inches wide, 1.5 inches tall
• Lightweight at 0.23 pounds for easy handling during installation
• Designed as a replacement or spare component for existing control panel assemblies
• Single-unit packaging suitable for individual repair or low-volume stocking

Compatibility

Designed as an OEM-style replacement fuse holder for control panels and electrical enclosures utilizing CC class fuses.

Installation Notes

Installation should be performed by a qualified electrician in accordance with the National Electrical Code (NEC). Always de-energize the circuit and verify zero voltage with a meter before removing or installing a fuse holder. Confirm the replacement holder is fully seated and all terminations are secure before restoring power. Do not install or replace fuses while the circuit is energized.