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Bussmann 170M3209 High-Speed Square Body Fuse, Class aR, 50A
The Bussmann 170M3209 is an Eaton Bussmann series high-speed square body fuse engineered for semiconductor protection in demanding industrial power circuits. Rated 700V (UL) / 690V (IEC) and 50A with a 200 kAIC interrupting rating, this Class aR fuse features a square body with blade end x blade end (slotted center bolted) tags built to DIN 43 620 dimensions. A top-mounted fuse status indicator provides fast visual confirmation of fuse condition, helping maintenance teams keep power electronics and drive systems running reliably.
Key Features
- Voltage Rating: 700V (UL) / 690V (IEC) for use in high-voltage industrial circuits.
- Amperage Rating: 50A rated for dependable overcurrent protection.
- Interrupting Rating: 200 kAIC to withstand high fault-current conditions.
- Fuse Shape: Square body with slotted center bolted (blade end x blade end) tags built to DIN 43 620.
- Status Indicator: Top fuse status indicator for quick visual verification of fuse condition.
- Utilization Category: Class aR (accompanied semiconductor protection) per IEC classification.
- Clearing Performance: Pre-arc I2t of 77 and clearing I2t of 515 at 660V, with a clearing loss of 11.
Certifications & Compliance
- IEC Rated
- CE Marked
Technical Specifications
- Amperage Rating: 50 A
- Application: semiconductor protection
- Certifications: IEC Rated
- Clearing I2t : 515 at 660 V
- Clearing Loss: 11
- Compliances: CE Marked
- Fuse Shape: Square body, slotted center bolted tags
- Insulated Metal Gripping Lugs Imgl : No
- Packaging Type: Standard
- Pre Arc I2t : 77
- Product Height: 65 mm
- Product Length Depth: 305 mm
- Product Weight: 341 g
- Product Width: 145 mm
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 690 V
- Voltage Type: AC
Typical Applications
- Semiconductor Protection Circuits
- Power Electronics and Variable Frequency Drives
- High Fault-Current Industrial Systems
- Industrial and Commercial Power Distribution
Why Bussmann?
Bussmann by Eaton builds this 170M3209 high-speed fuse to a 200 kAIC interrupting rating and Class aR utilization category, giving semiconductor and power electronics circuits dependable short-circuit protection. With CE marking, an IEC rating, and DIN 43 620 dimensional compliance, this square body fuse is engineered for consistent, code-compliant performance in demanding industrial applications. Choose Bussmann for high-speed fuse protection you can rely on.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 50 A
- Application:
- semiconductor protection
- Certifications:
- IEC Rated
- Class:
- Class aR
- Clearing I2t:
- 515 at 660 V
- Clearing Loss:
- 11
- 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:
- 77
- Product Height:
- 65 mm
- Product Length Depth:
- 305 mm
- Product Weight:
- 341 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