Bussmann 170M3566 High-Speed Square Body Fuse, Class aR, 250A
The Bussmann 170M3566 is an Eaton Bussmann series high-speed square body fuse engineered for semiconductor protection in demanding power electronics applications. Rated 700V (UL) / 690V (IEC) at 250A with a 200 kAIC interrupting rating, this Class aR fuse features a square body design with flush end contacts for compact, high-density mounting. Its high-speed characteristic delivers fast current-limiting action to safeguard semiconductor devices such as SCRs and diodes from short-circuit damage. UL Recognized and CE Marked, the 170M3566 is built for accompanied semiconductor protection in industrial power conversion equipment.
Key Features
- Dual Voltage Rating: 700V (UL) and 690V (IEC) rating supports both North American and international equipment designs.
- 250A Amperage Rating: Delivers reliable overcurrent protection at 250A for semiconductor circuits.
- 200 kAIC Interrupting Rating: High interrupting capacity suited to demanding fault-current environments.
- Class aR High-Speed Design: Utilization category aR provides accompanied semiconductor protection alongside upstream overload devices.
- Square Body, Flush End Contacts: Compact square-body construction with flush end contacts for space-saving panel and bus-bar mounting.
- Fast Clearing Performance: Pre-arc I2t of 4200 and clearing I2t of 28500 at 660V for precise current-limiting coordination.
- Low Watt Losses: Rated at 60W watt loss for efficient thermal performance in continuous operation.
Certifications & Compliance
- UL Recognized
- CE Marked
Technical Specifications
- Amperage Rating: 250 A
- Application: semiconductor protection
- Certifications: UL Recognized
- Clearing I2t: 28500 at 660 V
- Compliances: CE Marked
- Fuse Shape: Square body, flush end contacts
- Insulated Metal Gripping Lugs (IMGL): No
- Packaging Type: Standard
- Pre-Arc I2t: 4200
- Product Height: 47 mm
- Product Length/Depth: 193 mm
- Product Weight: 266.6666667 g
- Product Width: 106 mm
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 690 V
- Voltage Type: AC
- Watt Losses: 60 W
Typical Applications
- Semiconductor Protection in Power Electronics
- Variable Frequency Drives and Motor Controls
- Rectifier and Converter Circuits
- Industrial Power Conversion Equipment
- SCR and Diode Branch Circuit Protection
Why Bussmann?
Eaton Bussmann series fuses are engineered for precise, repeatable performance in critical semiconductor protection applications. The 170M3566's square body, flush-contact design, UL Recognized and CE Marked compliance, and defined I2t characteristics make it a dependable choice for coordinated overcurrent protection in professional power electronics installations.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 250 A
- Application:
- semiconductor protection
- Certifications:
- UL Recognized
- Class:
- Class aR
- Clearing I2t:
- 28500 at 660 V
- Compliances:
- CE Marked
- Fuse Indicator:
- Other
- Fuse Shape:
- Square body, flush end contacts
- Insulated Metal Gripping Lugs Imgl:
- No
- Interrupt Rating:
- 200 kAIC
- Mounting Method:
- Flush
- Packaging Type:
- Standard
- Pre Arc I2t:
- 4200
- Product Height:
- 47 mm
- Product Length Depth:
- 193 mm
- Product Weight:
- 266.6666667 g
- Product Width:
- 106 mm
- Utilization Category:
- aR (accompanied semiconductor protection)
- Voltage Rating:
- 690 V
- Voltage Type:
- AC
- Watt Losses:
- 60 W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse