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Bussmann 170M3572 High-Speed Square Body Fuse, Class aR, 550A, 700V
The Bussmann 170M3572 is an Eaton Bussmann series high-speed square body fuse engineered for demanding power electronics protection. Rated 700V (UL) and 690V (IEC) with a 550A amperage rating and a 200 kAIC interrupting capacity, this Class aR fuse uses a flush-style body for compact mounting in DC common bus, DC drive, and power converter/rectifier applications. Its high-speed square body design delivers fast, coordinated semiconductor protection where standard fuses cannot keep pace with fault currents.
Key Features
- Amperage Rating: 550A for high-current DC bus and drive circuits.
- Voltage Rating: 700V (UL) / 690V (IEC) for use across UL and IEC-rated systems.
- Interrupting Rating: 200 kAIC for reliable fault clearing in high fault-current applications.
- High-Speed Square Body, Flush Style: Class aR construction built for accompanied semiconductor protection.
- Utilization Category aR: Designed for accompanied semiconductor protection rather than full-range branch circuit duty.
- Voltage Type: AC/DC rated for flexible application across AC and DC circuits.
- Let-Through Energy: Pre-arc I2t of 34,000 and clearing I2t of 230,000 at 660V for coordinated semiconductor protection.
- Watt Losses: 100W rated power dissipation.
Certifications & Compliance
- IEC Rated
- CE Marked
Technical Specifications
- Amperage Rating: 550 A
- Application: DC common bus, DC drives, power converters/rectifiers
- Certifications: IEC Rated
- Clearing I2t : 230000 at 660 V
- Compliances: CE Marked
- Insulated Metal Gripping Lugs Imgl : No
- Packaging Type: Standard
- Pre Arc I2t : 34000
- Product Height: 47 mm
- Product Length Depth: 193 mm
- Product Weight: 262 g
- Product Width: 106 mm
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 690 V
- Voltage Type: AC/DC
- Watt Losses: 100 W
Typical Applications
- DC Common Bus Protection
- DC Drive Systems
- Power Converters and Rectifiers
- Semiconductor Device Protection
- Industrial Power Electronics
Why Bussmann?
Bussmann by Eaton engineers the 170M3572 high-speed fuse for demanding semiconductor protection duty, backed by a 200 kAIC interrupting rating, CE marking, and IEC certification. The Class aR design and documented pre-arc and clearing I2t values give engineers the coordination data needed for reliable, code-compliant protection of power converters, rectifiers, and DC drive systems.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 550 A
- Application:
- DC common bus, DC drives, power converters/rectifiers
- Certifications:
- IEC Rated
- Class:
- Class aR
- Clearing I2t:
- 230000 at 660 V
- Compliances:
- CE Marked
- Fuse Indicator:
- Other
- Insulated Metal Gripping Lugs Imgl:
- No
- Interrupt Rating:
- 200 kAIC
- Mounting Method:
- Flush
- Packaging Type:
- Standard
- Pre Arc I2t:
- 34000
- Product Height:
- 47 mm
- Product Length Depth:
- 193 mm
- Product Weight:
- 262 g
- Product Width:
- 106 mm
- Utilization Category:
- aR (accompanied semiconductor protection)
- Voltage Rating:
- 690 V
- Voltage Type:
- AC/DC
- Watt Losses:
- 100 W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse
Bussmann 170M3572 – Frequently Asked Questions
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Does the Bussmann 170M3572 come with a warranty?
Absolutely. The Bussmann 170M3572 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Bussmann 170M3572?
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