Bussmann 170M3988 High-Speed S...
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Bussmann 170M3988 High-Speed Square Body Fuse, Class aR, 250A

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Model: 170M3988

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

$951.71
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Bussmann 170M3988 High-Speed Square Body Fuse, Class aR, 250A

The Bussmann 170M3988 is an Eaton series high-speed square body fuse engineered for semiconductor protection in demanding industrial power circuits. Rated 700V (UL) and 690V (IEC) with a 250A amperage rating and 150 kAIC interrupt rating, this Class aR fuse is built to DIN 43 620 dimensions with a square body and slotted center bolted tags. A top fuse status indicator provides quick visual confirmation of fuse condition, and the fuse carries a 1000V AC voltage rating for accompanied semiconductor protection duty.

Key Features

  • Amperage Rating: 250A rated for high-speed semiconductor protection circuits.
  • Voltage Rating: 700V (UL), 690V (IEC), and 1000V AC for demanding power electronics applications.
  • Interrupt Rating: 150 kAIC for reliable high fault-current interruption.
  • Utilization Category: Class aR, accompanied semiconductor protection duty.
  • Fuse Shape: Square body with slotted center bolted tags conforming to DIN 43 620.
  • Top Fuse Status Indicator: Enables fast visual identification of a blown fuse.
  • I2t Ratings: Clearing I2t of 57000 at 1000V and Pre-Arc I2t of 9550 for precise coordination.
  • Watt Losses: 50W rated power loss.

Certifications & Compliance

  • IEC Rated
  • CE Marked

Technical Specifications

  • Amperage Rating: 250 A
  • Application: semiconductor protection
  • Certifications: IEC Rated
  • Clearing I2t: 57000 at 1000 V
  • Compliances: CE Marked
  • Fuse Shape: Square body, slotted center bolted tags
  • Insulated Metal Gripping Lugs (IMGL): No
  • Packaging Type: Standard
  • Pre Arc I2t: 9550
  • Product Height: 65 mm
  • Product Length/Depth: 305 mm
  • Product Weight: 483.3333333 g
  • Product Width: 145 mm
  • Utilization Category: aR (accompanied semiconductor protection)
  • Voltage Rating: 1000 V
  • Voltage Type: AC
  • Watt Losses: 50 W

Typical Applications

  • Semiconductor Protection Circuits
  • Power Electronics and Variable Frequency Drives
  • Industrial Motor Control Systems
  • High-Speed Fault Current Interruption
  • Panelboard and Switchgear Protection

Why Bussmann?

Bussmann by Eaton engineers high-speed square body fuses to DIN 43 620 standards for the demanding coordination requirements of semiconductor protection. With a 150 kAIC interrupt rating, IEC rating, and CE marking, the 170M3988 delivers dependable, code-compliant fault interruption for critical industrial power electronics circuits.

Manufacturer Resources

Product Specs

Amperage Rating:
250 A
Application:
semiconductor protection
Certifications:
IEC Rated
Class:
Class aR
Clearing I2t:
57000 at 1000 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:
150 kAIC
Mounting Method:
DIN 43 620
Packaging Type:
Standard
Pre Arc I2t:
9550
Product Height:
65 mm
Product Length Depth:
305 mm
Product Weight:
483.3333333 g
Product Width:
145 mm
Utilization Category:
aR (accompanied semiconductor protection)
Voltage Rating:
1000 V
Voltage Type:
AC
Watt Losses:
50 W
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Details:
Fuse

Bussmann 170M3988 – Frequently Asked Questions

How fast can I get the Bussmann 170M3988 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 170M3988 come with a warranty?
Absolutely. The Bussmann 170M3988 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 170M3988?
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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