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Bussmann 170M3967 High Speed Square Body Fuse, Class aR, 80A
The Bussmann 170M3967 is an Eaton Bussmann series high speed square body fuse engineered for reliable semiconductor protection in demanding industrial power circuits. Rated 80A at 1000V with a 150 kAIC interrupting rating, this Class aR fuse is built to DIN 43 620 dimensional standards with a square body and centre-bolted slotted tags for secure, low-resistance connections. Backed by a UL Recognized listing and CE Marked compliance, it delivers dependable overcurrent protection for accompanied semiconductor devices such as SCRs, diodes, and power electronic assemblies.
Key Features
- Amperage Rating: 80A for robust overcurrent protection in semiconductor circuits.
- Voltage Rating: 1000V AC rated for use in high-voltage power electronic systems.
- Interrupting Rating: 150 kAIC provides high fault-current interrupting capacity for demanding industrial applications.
- Utilization Category: Class aR (accompanied semiconductor protection) for coordinated protection of semiconductor devices.
- Fuse Shape: Square body with centre-bolted tags (slotted), built to DIN 43 620 standard dimensions for compatibility with standard fuse holders.
- I²t Ratings: Pre-arc I2t of 460 and clearing I2t of 2750 at 1000V for precise current-limiting coordination.
- Watt Loss: Rated at 30W for accurate thermal design of the fuse mounting system.
Certifications & Compliance
- UL Recognized
- CE Marked
Technical Specifications
- Amperage Rating: 80 A
- Application: semiconductor protection
- Certifications: UL Recognized
- Clearing I2t: 2750 at 1000 V
- Compliances: CE Marked
- Fuse Shape: Square body, slotted center bolted tags
- Insulated Metal Gripping Lugs (IMGL): No
- Pre Arc I2t: 460
- Product Height: 62 mm
- Product Length/Depth: 290 mm
- Product Weight: .9 g
- Product Width: 142 mm
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 1000 V
- Voltage Type: AC
- Watt Losses: 30 W
Typical Applications
- Semiconductor Protection for SCRs, Diodes, and Power Electronic Devices
- Industrial Power Conversion and Motor Drive Systems
- High-Speed Overcurrent Protection in AC Power Circuits up to 1000V
- Coordinated Protection Alongside Other Circuit Protective Devices
Why Bussmann?
Bussmann fuses from Eaton are engineered to strict DIN 43 620 dimensional standards and UL Recognized performance criteria, giving electrical professionals confidence in high-speed semiconductor protection applications. The 170M3967's defined pre-arc and clearing I2t values support precise selective coordination in demanding power electronic systems, while CE Marked compliance supports use in globally specified installations.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 80 A
- Application:
- semiconductor protection
- Certifications:
- UL Recognized
- Class:
- Class aR
- Clearing I2t:
- 2750 at 1000 V
- Compliances:
- CE Marked
- Fuse Indicator:
- Other
- Fuse Shape:
- Square body, slotted center bolted tags
- Insulated Metal Gripping Lugs Imgl:
- No
- Interrupt Rating:
- 150 kAIC
- Mounting Method:
- DIN 43 620
- Packaging Type:
- Standard
- Pre Arc I2t:
- 460
- Product Height:
- 62 mm
- Product Length Depth:
- 290 mm
- Product Weight:
- .9 g
- Product Width:
- 142 mm
- Utilization Category:
- aR (accompanied semiconductor protection)
- Voltage Rating:
- 1000 V
- Voltage Type:
- AC
- Watt Losses:
- 30 W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse