Bussmann 170M3219 High-Speed Square Body Fuse, 400A Class aR, 1300V UL
The Bussmann 170M3219 is an Eaton Bussmann series high-speed square body fuse engineered for semiconductor protection, rated 1250V (IEC) and 1300V (UL) with a 400A amperage rating and a 200 kAIC interrupt rating. Built to DIN 43 620 dimensions with a blade end X blade end connection and Class aR utilization category, this fuse is designed to safeguard power semiconductors, rectifiers, and drive circuits in demanding industrial applications. A top-mounted fuse status indicator allows for quick visual confirmation of fuse condition without interrupting service.
Key Features
- Amperage Rating: 400A high-speed fuse rated for demanding semiconductor protection duty.
- Dual Voltage Rating: 1250V (IEC) and 1300V (UL) construction supports both international and North American applications.
- Interrupt Rating: 200 kAIC interrupting capacity for reliable short-circuit protection.
- Class aR Utilization: Accompanied semiconductor protection category designed to work alongside other overcurrent devices.
- Square Body Design: Square body construction with slotted center bolted tags for blade end X blade end connections per DIN 43 620.
- Fuse Status Indicator: Top-mounted indicator provides at-a-glance confirmation of fuse condition.
- I2t Ratings: Pre-arc I2t of 15000 and clearing I2t of 105000 at 660V for precise coordination with protected equipment.
- Compact Dimensions: Measures 305 mm long, 145 mm wide, and 65 mm high, weighing 339.5 g.
Certifications & Compliance
- UL Recognized
- CE Marked
Technical Specifications
- Amperage Rating: 400 A
- Application: semiconductor protection
- Certifications: UL Recognized
- Clearing I2t: 105000 at 660 V
- Clearing Loss: 60
- Compliances: CE Marked
- Fuse Shape: Square body, slotted center bolted tags
- Insulated Metal Gripping Lugs (IMGL): No
- Packaging Type: Standard
- Pre Arc I2t: 15000
- Product Height: 65 mm
- Product Length/Depth: 305 mm
- Product Weight: 339.5 g
- Product Width: 145 mm
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 690 V
- Voltage Type: AC
Typical Applications
- Semiconductor and Power Electronics Protection
- Variable Frequency Drives and Motor Control Circuits
- Rectifier and Converter Overcurrent Protection
- Industrial Power Distribution Equipment
Why Bussmann?
Bussmann by Eaton is a recognized name in circuit protection, and the 170M3219 reflects that standard with UL Recognized and CE Marked compliance, a 200 kAIC interrupt rating, and precise Class aR semiconductor protection performance. For engineers and electricians specifying high-speed fuses for demanding power electronics, the Bussmann 170M3219 delivers dependable, code-aware protection built to DIN 43 620 dimensional standards.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 400 A
- Application:
- semiconductor protection
- Certifications:
- UL Recognized
- Class:
- Class aR
- Clearing I2t:
- 105000 at 660 V
- Clearing Loss:
- 60
- Compliances:
- CE Marked
- Connection:
- Blade end x blade end
- Fuse Indicator:
- Top fuse status indicator
- Fuse Shape:
- Square body, slotted center bolted tags
- Insulated Metal Gripping Lugs Imgl:
- No
- Interrupt Rating:
- 200 kAIC
- Mounting Method:
- DIN 43 620
- Packaging Type:
- Standard
- Pre Arc I2t:
- 15000
- Product Height:
- 65 mm
- Product Length Depth:
- 305 mm
- Product Weight:
- 339.5 g
- Product Width:
- 145 mm
- Utilization Category:
- aR (accompanied semiconductor protection)
- Voltage Rating:
- 690 V
- Voltage Type:
- AC
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse