Bussmann 170M4446 Eaton Series...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,837.95
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Bussmann 170M4446 Eaton Series High-Speed Square Body Fuse, Class aR, 550A

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Model: 170M4446

In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,837.95
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Bussmann 170M4446 Eaton Series High-Speed Square Body Fuse, Class aR, 550A

The Bussmann 170M4446 is an Eaton Bussmann series high-speed square body fuse engineered for demanding power semiconductor protection applications. Rated 550A with a dual voltage rating of 700V (UL) and 690V (IEC), this Class aR fuse delivers a 100 kAIC interrupt rating and features a square body design with flush end contacts for reliable installation. Built to the aR utilization category for accompanied semiconductor protection, it is IEC rated and CE marked for use in professional industrial power electronics systems.

Key Features

  • Amperage Rating: 550A for high-capacity circuit protection in demanding power circuits.
  • Dual Voltage Rating: 700V (UL) and 690V (IEC), with a 1250V voltage rating for broad system compatibility.
  • Interrupt Rating: 100 kAIC provides robust short-circuit protection.
  • Utilization Category: Class aR (accompanied semiconductor protection) for coordinated protection of power semiconductors.
  • Fuse Shape: Square body with flush end contacts for secure, low-profile mounting.
  • Application: Purpose-built for semiconductor protection in power conversion equipment.
  • Watt Losses: 95W rated watt loss for predictable thermal performance.
  • Clearing I2t: 465000 at 1000V and 590000 at 1250V; Pre-Arc I2t of 95000 for precise coordination with protected devices.

Certifications & Compliance

  • IEC Rated
  • CE Marked

Technical Specifications

  • Amperage Rating: 550 A
  • Application: semiconductor protection
  • Certifications: IEC Rated
  • Clearing I2t : 465000 at 1000 V, 590000 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 : 95000
  • Product Height: 51 mm
  • Product Length Depth: 160 mm
  • Product Weight: .573 g
  • Product Width: 70 mm
  • Utilization Category: aR (accompanied semiconductor protection)
  • Voltage Rating: 1250 V
  • Voltage Type: AC
  • Watt Losses: 95 W

Typical Applications

  • Semiconductor Protection Applications
  • Power Conversion and Rectifier Equipment
  • Industrial Power Electronics Systems
  • Coordinated Protection for Power Semiconductor Devices

Why Bussmann?

Bussmann by Eaton engineers this high-speed square body fuse to deliver dependable, code-compliant protection for demanding semiconductor applications, backed by a 100 kAIC interrupt rating and Class aR utilization category. With IEC rating and CE marking, the 170M4446 is built for professional industrial power electronics where precise clearing characteristics and reliable performance are essential. Choose Bussmann for consistent, high-speed fuse protection you can specify with confidence.

Manufacturer Resources

Product Specs

Amperage Rating:
550 A
Application:
semiconductor protection
Certifications:
IEC Rated
Class:
Class aR
Clearing I2t:
465000 at 1000 V, 590000 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:
95000
Product Height:
51 mm
Product Length Depth:
160 mm
Product Weight:
.573 g
Product Width:
70 mm
Utilization Category:
aR (accompanied semiconductor protection)
Voltage Rating:
1250 V
Voltage Type:
AC
Watt Losses:
95 W
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Details:
Fuse

Bussmann 170M4446 – Frequently Asked Questions

How fast can I get the Bussmann 170M4446 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Bussmann 170M4446 come with a warranty?
Absolutely. The Bussmann 170M4446 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 170M4446?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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