Bussmann 170M8626 Eaton Series High-Speed Square Body Fuse, 1250A Class aR
The Bussmann 170M8626 is an Eaton Bussmann series high-speed square body fuse engineered for semiconductor protection in demanding industrial power electronics. Rated 690 Vac / 500 Vdc at 1250A with a 125 kAIC interrupt rating, this Class aR (accompanied semiconductor protection) fuse is built to DIN 43 620 dimensional standards for square body, slotted center bolted-tag mounting. It is UL Recognized and CE Marked, delivering fast-acting overcurrent protection for semiconductor devices in rectifiers, drives, and other high-current DC and AC power systems.
Key Features
- Amperage Rating: 1250A for high-current semiconductor protection circuits.
- Voltage Rating: 690 Vac / 500 Vdc (1000V rated) for use across AC and DC power systems.
- Interrupt Rating: 125 kAIC high interrupting capacity for demanding fault-current environments.
- Utilization Category: Class aR (accompanied semiconductor protection) designed to safeguard semiconductor devices against short-circuit currents.
- Fuse Shape: Square body construction with slotted center bolted tags, built to the DIN 43 620 dimensional standard.
- Let-Through Energy: Clearing I²t of 3,400,000 A²s at 1000V and Pre-Arc I²t of 575,000 A²s for precise protection coordination.
- Watt Losses: 175W power dissipation rating.
- Dimensions & Weight: 168mm length x 95mm width x 76mm height, 1294g.
Certifications & Compliance
- UL Recognized
- CE Marked
Technical Specifications
- Amperage Rating: 1250 A
- Application: semiconductor protection
- Certifications: UL Recognized
- Clearing I2t: 3400000 at 1000 V
- Compliances: CE Marked
- Fuse Shape: Square body, slotted center bolted tags
- Insulated Metal Gripping Lugs (IMGL): No
- Packaging Type: Standard
- Pre Arc I2t: 575000
- Product Height: 76 mm
- Product Length Depth: 168 mm
- Product Weight: 1294 g
- Product Width: 95 mm
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 1000 V
- Voltage Type: AC
- Watt Losses: 175 W
Typical Applications
- Semiconductor Protection Circuits
- Industrial Power Electronics and Drives
- Rectifier and Converter Systems
- High-Speed Fault-Current Interruption
Why Bussmann?
Bussmann fuses from Eaton are engineered and tested to strict UL Recognition and CE Marking standards, giving electrical professionals confidence in fast, reliable overcurrent protection. The 170M8626's Class aR construction and DIN 43 620 square body design make it a dependable choice for protecting semiconductor devices in critical industrial power applications.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 1250 A
- Application:
- semiconductor protection
- Certifications:
- UL Recognized
- Class:
- Class aR
- Clearing I2t:
- 3400000 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:
- 125 kAIC
- Mounting Method:
- DIN 43 620
- Packaging Type:
- Standard
- Pre Arc I2t:
- 575000
- Product Height:
- 76 mm
- Product Length Depth:
- 168 mm
- Product Weight:
- 1294 g
- Product Width:
- 95 mm
- Utilization Category:
- aR (accompanied semiconductor protection)
- Voltage Rating:
- 1000 V
- Voltage Type:
- AC
- Watt Losses:
- 175 W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse