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Bussmann 170M3668 High Speed Square Body Fuse, 350A, 690V, Class aR
The Bussmann 170M3668 is an Eaton Bussmann series high speed square body fuse built for demanding semiconductor protection duty. Rated 700V (UL) / 690V (IEC) with a 350A amperage rating and a 200 kAIC interrupt rating, this Class aR (accompanied semiconductor protection) fuse is engineered to safeguard power semiconductors from short-circuit and overcurrent events. Its square body design uses center bolted tags with blade end x blade end terminals for a secure, low-resistance connection in high-speed protection circuits.
Key Features
- Amperage Rating: 350A for dependable overcurrent protection in high-power semiconductor circuits.
- Voltage Rating: 700V (UL) / 690V (IEC) AC, suited to demanding industrial power systems.
- Interrupt Rating: 200 kAIC for reliable performance under high fault-current conditions.
- Utilization Category: Class aR (accompanied semiconductor protection) for coordinated protection of power semiconductor devices.
- Fuse Shape: Square body with center bolted tags and blade end x blade end terminals for a secure, low-resistance mount.
- Clearing I2t: 68500 at 660V for predictable let-through energy during fault clearing.
- Pre-Arc I2t: 10000 for consistent, repeatable melting characteristics.
- Watt Losses: 55W rated power dissipation.
Certifications & Compliance
- IEC Rated
- CE Marked
Technical Specifications
- Amperage Rating: 350 A
- Application: semiconductor protection
- Certifications: IEC Rated
- Clearing I2t: 68500 at 660 V
- Compliances: CE Marked
- Fuse Shape: Square body, center bolted tags
- Insulated Metal Gripping Lugs (Imgl): No
- Packaging Type: Standard
- Pre Arc I2t: 10000
- Product Height: 65 mm
- Product Length Depth: 305 mm
- Product Weight: 319 g
- Product Width: 145 mm
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 690 V
- Voltage Type: AC
- Watt Losses: 55 W
Typical Applications
- Semiconductor Protection Circuits
- Variable Frequency Drives and Power Electronics
- Industrial Motor Drive Systems
- Rectifier and Converter Protection
- High-Speed Circuit Protection for Power Semiconductor Devices
Why Bussmann?
Bussmann by Eaton is a recognized name in circuit protection, and the 170M3668 reflects that standard with a 200 kAIC interrupt rating, defined Clearing and Pre-Arc I2t values, and a Class aR utilization category built specifically for accompanied semiconductor protection. The IEC rated, CE marked construction supports code-compliant performance in industrial power electronics, giving engineers a fuse they can specify with confidence for high-speed, high-reliability protection of power semiconductor devices.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 350 A
- Application:
- semiconductor protection
- Certifications:
- IEC Rated
- Class:
- Class aR
- Clearing I2t:
- 68500 at 660 V
- Compliances:
- CE Marked
- Connection:
- Blade end x blade end
- Fuse Indicator:
- Other
- Fuse Shape:
- Square body, center bolted tags
- Insulated Metal Gripping Lugs Imgl:
- No
- Interrupt Rating:
- 200 kAIC
- Packaging Type:
- Standard
- Pre Arc I2t:
- 10000
- Product Height:
- 65 mm
- Product Length Depth:
- 305 mm
- Product Weight:
- 319 g
- Product Width:
- 145 mm
- Utilization Category:
- aR (accompanied semiconductor protection)
- Voltage Rating:
- 690 V
- Voltage Type:
- AC
- Watt Losses:
- 55 W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse