Overview
The Eaton Bussmann SAMI-1I fuse block cover is a field-installable, dead-front indicating cover designed to convert open fuse blocks into protected configurations. This SAMI-1I cover accepts Class J, T, R, K5, and H type fuses and is rated for continuous operation up to 600 Vac and 600 Vdc, with a current range of 35–60A (0–30A for 600V Class J and 35–60A for Class T applications).
Key Features
- Dead-front construction prevents accidental contact with energized fuses and connections
- Indicating contacts optional—with teeth to break oxidation layer on fuse endcaps and provide clear signal path for troubleshooting
- Thermoplastic insulated cover allows existing fuses to remain mounted; no field modifications to existing wiring required
- Reusable design and field-cuttable cover ends for flexible installation over existing terminals and wiring
- Includes labels for marking line and load side identification and circuit information
- UL and CSA approved; flammability rating UL 94V-2
Technical Specifications
- Voltage Rating: 600 Vac (90–600V), 600 Vdc (115–600V)
- Current Rating: 35–60A (0–30A at 250V)
- Fuse Classes Supported: J, T, R, K5, H
- Cover Type: Indicating, dead front
- Material: Thermoplastic
- Dimensions: 5.02 in. L × 1.03 in. W × 1.94 in. H
- Weight: Approximately 1 pound
- Color: Black
- Certifications: UL, CSA; UL 94V-2 flammability rating
- Series: Eaton Bussmann SAMI
Typical Applications
The SAMI-1I cover is ideal for electrical panels, control cabinets, and motor control centers where personnel safety and circuit traceability are critical. Common uses include:
- Industrial machinery and equipment control panels
- HVAC and building automation systems
- Data centers and telecommunications installations
- Retrofit applications converting existing open fuse blocks to dead-front protected status
- Field service upgrades where equipment must remain operational during installation
Compatibility & Replacements
Compatible With
- Class J, T, R, K5, and H fuse cartridges (35–60A ratings)
- Open fuse block configurations requiring dead-front protection
- Industrial control systems and distribution panels rated 600 Vac/Vdc
- Standard electrical enclosures and switchboards
Replaces / Drop-In Replacement For
The SAMI-1I is a direct upgrade for any open fuse block currently using Class J, T, R, K5, or H fuses in the 35–60A range. It provides dead-front protection without requiring circuit modifications or fuse replacement.
Works With
- Bussmann Fuseology catalog and design guides
- NFPA 70 (National Electrical Code) compliant installations
- All standard industrial control and power distribution systems
- Eaton Bussmann fuse testing and application software tools
