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Bussmann 170M4389 High-Speed Square Body Fuse, Class aR, 200A
The Bussmann 170M4389 is an Eaton Bussmann series high-speed square body fuse engineered for demanding semiconductor protection applications. Rated 700V (UL) and 690V (IEC) with a 200A amperage rating and a 100 kAIC interrupting rating, this Class aR fuse is built for accompanied semiconductor protection where fast, reliable clearing of fault currents is critical. Its square body, flush end contact design supports compact panel and busbar mounting, and the fuse carries UL Recognized and CE Marked compliance for professional installations.
Key Features
- Amperage Rating: 200A for reliable overcurrent protection in semiconductor and power electronic circuits.
- Voltage Rating: 700V (UL) / 690V (IEC), 1250V AC voltage rating for high-voltage industrial systems.
- Interrupting Rating: 100 kAIC high interrupting capacity for demanding fault-current conditions.
- Utilization Category: Class aR (accompanied semiconductor protection) for coordinated protection schemes.
- Fuse Shape: Square body with flush end contacts for space-saving, compact installation.
- Clearing I2t: 22500 at 1000V and 30000 at 1250V for predictable let-through energy.
- Pre-Arc I2t: 3800 for accurate coordination with upstream and downstream devices.
- Watt Losses: 50W power dissipation rating.
Certifications & Compliance
- UL Recognized
- CE Marked
Technical Specifications
- Amperage Rating: 200 A
- Application: semiconductor protection
- Certifications: UL Recognized
- Clearing I2t: 22500 at 1000 V, 30000 at 1250 V
- Compliances: CE Marked
- Fuse Shape: Square body, flush end contacts
- Insulated Metal Gripping Lugs (Imgl): No
- Packaging Type: Standard
- Pre Arc I2t: 3800
- Product Height: 52 mm
- Product Length Depth: 73 mm
- Product Weight: 559 g
- Product Width: 170 mm
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 1250 V
- Voltage Type: AC
- Watt Losses: 50 W
Typical Applications
- Semiconductor Device Protection
- Accompanied Semiconductor Circuit Protection (Class aR)
- Industrial Power Electronics and Drive Systems
- High-Speed Overcurrent Protection for Critical Circuits
Why Bussmann?
Bussmann is a trusted name in circuit protection, and the 170M4389 reflects that standard with a 100 kAIC interrupting rating, UL Recognized and CE Marked compliance, and a Class aR design built for accompanied semiconductor protection. For engineers and electricians specifying fast-acting, code-compliant fuses for demanding industrial and power electronic applications, the Bussmann 170M4389 delivers dependable, coordinated overcurrent protection.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 200 A
- Application:
- semiconductor protection
- Certifications:
- UL Recognized
- Class:
- Class aR
- Clearing I2t:
- 22500 at 1000 V, 30000 at 1250 V
- Compliances:
- CE Marked
- Fuse Indicator:
- Other
- Fuse Shape:
- Square body, flush end contacts
- Insulated Metal Gripping Lugs Imgl:
- No
- Interrupt Rating:
- 100 kAIC
- Mounting Method:
- Flush
- Packaging Type:
- Standard
- Pre Arc I2t:
- 3800
- Product Height:
- 52 mm
- Product Length Depth:
- 73 mm
- Product Weight:
- 559 g
- Product Width:
- 170 mm
- Utilization Category:
- aR (accompanied semiconductor protection)
- Voltage Rating:
- 1250 V
- Voltage Type:
- AC
- Watt Losses:
- 50 W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse