Class H & K Fuse Reducer - Fuse Reducer for Electrical Protection

Mersen Class H & K Fuse Reducers enable the use of lower rated fuses in existing electrical equipment with clips rated for higher amperes. This allows electrical distributors and switchgear suppliers to improve circuit protection by using closer rated time-delay fuses, particularly beneficial in motor feed applications. These reducers accommodate renewable or one-time fuses sized closer to the motor nameplate current, enhancing system reliability. Non-rejection reducers fit Class H, K, or R fuses into Class H or K clips, while rejection-type reducers restrict fitting to Class R or Class J fuses. Class J fuse reducers are not suitable for bolt-on applications.

Specifications

• Manufacturer: Mersen
• Manufacturer Part #: 166
• Class: H & K
• Voltage Ratings: 250V and 600V for Class H, K, and R fuses
• Amperage Range: 30 to 600A
• Tested Interrupting Rating: 200,000A
• Dimensions: Length 1.84 in, Width 0.9 in, Height 0.9 in
• Product Weight: 0.0200 lbs
• Certifications: UL Listed Guide No. IZZR, CSA Certified

Features

• Allows use of lower rated fuses in equipment with higher ampere clips
• Improves circuit protection with closer rated time-delay fuses
• Non-rejection reducers fit Class H, K, or R fuses to Class H or K clips
• Rejection-type reducers restrict fitting to Class R or Class J fuses only
• Not intended for bolt-on applications when using Class J fuse reducers
• Suitable for temporary use only

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