Class J Fuse Reducer - J for Electrical Circuit Protection

Mersen Class J Fuse Reducers enable the use of lower rated fuses in existing equipment with clips rated for higher amperages. These fuse reducers allow the installation of closer rated time-delay fuses, enhancing circuit protection by matching fuse ratings more closely to motor nameplate currents or other load requirements. Specifically designed for Class J fuses, these reducers fit 600 Volt Class J clips and are intended for temporary use only. They are not suitable for bolt-on applications. This product is relevant for electrical distributors and switchgear suppliers seeking reliable fuse and circuit protection solutions.

Specifications

• Manufacturer: Mersen
• Manufacturer Part #: J646
• Class: J
• Voltage Rating: 600 Volts
• Amperage Range: 30 to 600 Amps
• Dimensions: 2.31 in (Length) x 2 in (Width) x 0.187 in (Height)
• Product Weight: 0.4200 lbs
• Tested Interrupting Rating: 200,000 Amps
• UPC: 782001753528
• Certifications: UL Listed Guide No. IZZR, CSA Certified

Features

• Allows use of lower rated fuses in higher ampere clips for improved circuit protection
• Enables replacement of renewable or one-time fuses with fuses sized closer to motor nameplate current
• Rejection-type reducer fits only Class J fuses to Class J clips
• Not intended for bolt-on applications
• Compatible with 600 Volt Class J fuse clips

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