Bussmann 170M3145 High-Speed S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,072.70
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Bussmann 170M3145 High-Speed Square Body Fuse, Class aR, 250A

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Model: 170M3145

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

$1,072.70
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Bussmann 170M3145 High-Speed Square Body Fuse, Class aR, 250A

The Bussmann 170M3145 is an Eaton Bussmann series high-speed square body fuse engineered for demanding power electronics and semiconductor protection applications. Rated 700V (UL) / 690V (IEC) and 250A with a 100 kAIC interrupt rating, this Class aR fuse is built to DIN 43 620 dimensions and includes a top fuse status indicator for at-a-glance condition monitoring. Its square body design with slotted, center-bolted tags supports secure, high-current connections in accompanied semiconductor protection duty.

Key Features

  • Dimensions: Square body fuse measuring 305 mm long, 145 mm wide, and 65 mm high, built to DIN 43 620 standard dimensions.
  • Fuse Shape: Square body with slotted, center-bolted tags for secure, high-current terminal connections.
  • Class aR Rating: Utilization category aR (accompanied semiconductor protection) for coordinated protection of semiconductor devices.
  • Electrical Rating: 700V (UL) / 690V (IEC), 250A, with a 100 kAIC interrupt rating for high fault-current environments.
  • Top Fuse Status Indicator: Built-in indicator allows quick visual confirmation of fuse condition without de-energizing equipment.
  • I2t Ratings: Pre-arc I2t of 9200 and clearing I2t of 54500 at 1000V / 73000 at 1250V for precise current-limiting coordination.
  • Watt Losses: Rated at 55W for accurate thermal design planning.
  • Weight: 425 g per fuse for enclosure and panel layout planning.

Certifications & Compliance

  • IEC Rated
  • CE Marked

Technical Specifications

  • Amperage Rating: 250 A
  • Application: semiconductor protection
  • Certifications: IEC Rated
  • Clearing I2t: 54500 at 1000 V, 73000 at 1250 V
  • Compliances: CE Marked
  • Fuse Shape: Square body, slotted center bolted tags
  • Insulated Metal Gripping Lugs (IMGL): No
  • Packaging Type: Standard
  • Pre Arc I2t: 9200
  • Product Height: 65 mm
  • Product Length Depth: 305 mm
  • Product Weight: 425 g
  • Product Width: 145 mm
  • Utilization Category: aR (accompanied semiconductor protection)
  • Voltage Rating: 1250 V
  • Voltage Type: AC
  • Watt Losses: 55 W

Typical Applications

  • Semiconductor Protection in Power Electronics
  • Motor Drive and Rectifier Protection
  • Industrial Power Conversion Equipment
  • High-Speed Fault Current Limiting
  • OEM Equipment Requiring DIN 43 620 Fuses

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and the 170M3145 reflects that standard with precise Class aR semiconductor protection, a 100 kAIC interrupt rating, and a top fuse status indicator for quick condition checks. Built to DIN 43 620 dimensions with IEC rated and CE marked compliance, this fuse delivers dependable, code-aware protection for demanding industrial power electronics applications.

Manufacturer Resources

Product Specs

Amperage Rating:
250 A
Application:
semiconductor protection
Certifications:
IEC Rated
Class:
Class aR
Clearing I2t:
54500 at 1000 V, 73000 at 1250 V
Compliances:
CE Marked
Fuse Indicator:
Top fuse status indicator
Fuse Shape:
Square body, slotted center bolted tags
Insulated Metal Gripping Lugs Imgl:
No
Interrupt Rating:
100 kAIC
Mounting Method:
DIN 43 620
Packaging Type:
Standard
Pre Arc I2t:
9200
Product Height:
65 mm
Product Length Depth:
305 mm
Product Weight:
425 g
Product Width:
145 mm
Utilization Category:
aR (accompanied semiconductor protection)
Voltage Rating:
1250 V
Voltage Type:
AC
Watt Losses:
55 W
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Details:
Fuse

Bussmann 170M3145 – Frequently Asked Questions

How fast can I get the Bussmann 170M3145 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 170M3145 come with a warranty?
Absolutely. The Bussmann 170M3145 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 170M3145?
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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