Mersen R622 Fuse Reducer – Class R – 600V – 200A to 600A Adapter (Fuse Clip Reducer)

The Mersen R622 is a Class R fuse reducer designed to allow the use of 200A fuses in 600A Class R fuse clips. It provides a safe and reliable method for adapting fuse sizes within existing electrical infrastructure without modifying equipment. This ensures proper mechanical fit, correct electrical contact, and maintained protection coordination in industrial power distribution systems.

By enabling flexible fuse sizing, the R622 helps reduce inventory complexity and supports retrofit or system standardization projects while maintaining compliance with Class R protection systems.

Voltage and Rating

• Voltage Rating: 600V AC
• Fuse Class: Class R
• Current Compatibility: 200A to 600A
• Design Type: Fuse Reducer / Adapter

Key Specifications

• Product Type: Fuse Reducer Accessory
• Part Number: R622
• Manufacturer: Mersen
• Function: Enables lower ampere fuse installation in higher-rated fuse holders
• Application Use: Class R fuse systems
• Unit Type: Each (EA)
• Design Style: Precision-fit fuse adapter insert

Technical Specifications

• Function: Provides mechanical and electrical adaptation between different fuse ratings
• Application Suitability: Industrial control panels, switchgear, and power distribution systems
• Design Features: Rejection-style safety design ensuring correct fuse usage
• System Integration: Compatible with UL Class R fuse systems
• Installation Type: Clip-in fuse reducer accessory

Physical Specifications

• Length: 76.2 mm
• Height: 50.8 mm

Standards and Approvals

• UL Listed for Class R fuse systems
• CSA Certified
• Designed for industrial electrical distribution compliance

Applications

• Industrial power distribution systems
• Motor control centers (MCCs)
• Switchgear assemblies
• Retrofit and upgrade projects
• Electrical maintenance and standardization
• Commercial and industrial installations

Returns are easy

You may return items within 30 days of delivery for a refund.

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