Overview
The Cooper Bussmann NO 216-R is a Class R fuse reducer designed to enable flexible overcurrent protection in electrical systems. This rejection-type reducer allows technicians and integrators to install lower-amperage fuses in existing higher-rated holders without modifying the enclosure or rewiring. A standard component in industrial panels, switchgear, and control systems requiring downsizing of fuse protection.
Key Features
- Converts 100A fuse holders to accept 60A Class R fuses at 250V
- Compatible with RK1 and RK5 class fuse ratings
- Gold-colored copper construction ensures reliable electrical contact
- Rejection design prevents insertion of incorrect fuse types
- Strong mechanical and electrical contact with both fuse and holder
- Compact form factor fits standard industrial switchgear and panels
Technical Specifications
- Fuse Current Rating: 60A at 250V
- Clip/Holder Current Rating: 100A at 250V
- Maximum Voltage: 250V AC / 600V (holder compatible to 600V)
- Fuse Class Compatibility: RK1, RK5, Class R
- Material: Copper with gold plating
- Length: 2.5 inches
- Height: 1.4 inches
- Width: 1.8 inches
- Weight: Standard ferrule weight (lightweight)
- UPC: 051712613668
Typical Applications
- Industrial control panels requiring circuit protection downsizing
- Switchgear retrofitting without full panel redesign
- Motor control centers (MCCs) and distribution boards
- Legacy equipment upgrade to lower protection ratings
- OEM equipment assembly with standardized 100A holder slots
- Maintenance and replacement in field-deployed systems
Compatibility & Replacements
Compatible With
- Class R fuse holders and clips rated 100A at 250V or 600V
- RK1 class fuses (up to 30A at 600V)
- RK5 class fuses (35–60A at 250V or 600V)
- Standard industrial electrical enclosures and panels
- Dead-front panelboards and switchgear
Replaces / Drop-In Replacement For
- Eaton Bussmann NO 216-R
- Littelfuse LRU216R
- Generic Class R 100A-to-60A reducers in rejection design
Works With
- Class R fuse protection systems and accessories
- Industrial distribution and motor control applications
- UL 489, UL 508 certified control and switchgear equipment
- NFPA 70 (National Electrical Code) compliant installations
