Bussmann 170M6744 Eaton Series...
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Bussmann 170M6744 Eaton Series High-Speed Square Body Fuse, 630A, Class aR, 100 kAIC

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Model: 170M6744

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

$1,844.64
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Bussmann 170M6744 Eaton Series High-Speed Square Body Fuse, 630A, Class aR, 100 kAIC

The Bussmann 170M6744 is an Eaton series high-speed square body fuse engineered for semiconductor protection in demanding power electronics applications. Rated 630A and 1250V AC with a 100 kAIC interrupt rating, this Class aR fuse is designed for accompanied semiconductor protection, meaning it is intended for use alongside another protective device rather than as a stand-alone fully-rated fuse. Its square body construction with center bolted tags supports direct bus bar mounting, and the fuse carries IEC ratings with CE marking for compliant electrical installations.

Key Features

  • Amperage Rating: 630A high-speed fuse rated for demanding semiconductor circuit protection loads.
  • Voltage Rating: 1250V AC rating supports use in high-voltage power conversion equipment.
  • Interrupt Rating: 100 kAIC short-circuit interrupt rating delivers robust fault-current protection.
  • Fuse Shape: Square body design with center bolted tags for direct bus bar and internal panel mounting.
  • Utilization Category: Class aR rating provides accompanied semiconductor protection, intended for use alongside another protective device.
  • Clearing I2t: 495,000 A2s at 1000V and 665,000 A2s at 1250V for controlled let-through energy.
  • Pre-Arc I2t: 83,500 A2s pre-arc rating for coordination with upstream and downstream protective devices.
  • Watt Losses: 115W power dissipation rating.

Certifications & Compliance

  • IEC Rated
  • CE Marked

Technical Specifications

  • Amperage Rating: 630 A
  • Application: semiconductor protection
  • Certifications: IEC Rated
  • Clearing I2t: 495000 at 1000 V, 665000 at 1250 V
  • Compliances: CE Marked
  • Fuse Shape: Square body, center bolted tags
  • Insulated Metal Gripping Lugs (IMGL): No
  • Packaging Type: Standard
  • Pre Arc I2t: 83500
  • Product Height: 76 mm
  • Product Length/Depth: 168 mm
  • Product Weight: 1344 g
  • Product Width: 95 mm
  • Utilization Category: aR (accompanied semiconductor protection)
  • Voltage Rating: 1250 V
  • Voltage Type: AC
  • Watt Losses: 115 W

Typical Applications

  • Semiconductor Device Protection
  • Power Electronics and Converter Circuits
  • Industrial Motor Drive and Rectifier Protection
  • High-Voltage Power Distribution Equipment
  • Accompanied Backup Fuse Protection Schemes

Why Bussmann?

Bussmann by Eaton builds this high-speed square body fuse for the demanding coordination requirements of semiconductor protection, backing its 630A, 1250V, 100 kAIC rating with IEC ratings and CE marking. The Class aR utilization category and precise pre-arc and clearing I2t values give engineers the data needed for accurate protection coordination in critical power electronics circuits. Choose Bussmann for code-compliant, reliable fuse protection in professional electrical installations.

Manufacturer Resources

Product Specs

Amperage Rating:
630 A
Application:
semiconductor protection
Certifications:
IEC Rated
Class:
Class aR
Clearing I2t:
495000 at 1000 V, 665000 at 1250 V
Compliances:
CE Marked
Fuse Indicator:
Other
Fuse Shape:
Square body, center bolted tags
Insulated Metal Gripping Lugs Imgl:
No
Interrupt Rating:
100 kAIC
Packaging Type:
Standard
Pre Arc I2t:
83500
Product Height:
76 mm
Product Length Depth:
168 mm
Product Weight:
1344 g
Product Width:
95 mm
Utilization Category:
aR (accompanied semiconductor protection)
Voltage Rating:
1250 V
Voltage Type:
AC
Watt Losses:
115 W
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Details:
Fuse

Bussmann 170M6744 – Frequently Asked Questions

How fast can I get the Bussmann 170M6744 delivered?
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Can I return it if it doesn’t work for me?
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Does the Bussmann 170M6744 come with a warranty?
Absolutely. The Bussmann 170M6744 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 170M6744?
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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