Bussmann 170M3903 Class aR Hig...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$685.05
Image coming soon

Bussmann 170M3903 Class aR High-Speed Square Body Fuse, 160A/690V

(No reviews yet) Write a Review

Model: 170M3903

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

$685.05
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks

Bussmann 170M3903 Class aR High-Speed Square Body Fuse, 160A/690V

The Bussmann 170M3903 is an Eaton Bussmann series high-speed square body fuse engineered for demanding power semiconductor protection. Rated 700V (UL) / 690V (IEC) and 160A with a 200 kAIC interrupt rating, this Class aR fuse is built for accompanied semiconductor protection where fast clearing of fault current is critical. A top fuse status indicator lets technicians verify fuse condition at a glance, reducing troubleshooting time on industrial power equipment.

Key Features

  • Amperage Rating: 160A continuous current rating suited for semiconductor protection circuits.
  • Voltage Rating: 700V (UL) / 690V (IEC) AC rating for industrial power systems.
  • Interrupt Rating: 200 kAIC short-circuit current rating for high fault-current applications.
  • Utilization Category aR: Class aR high-speed fuse designed for accompanied semiconductor protection.
  • Square Body Construction: Square body fuse shape with slotted center bolted tags for a secure, low-resistance connection.
  • Top Fuse Status Indicator: Built-in visual indicator allows quick confirmation of fuse condition without power disconnection.
  • Compact Dimensions: Measures 145 mm in length/depth by 305 mm in width by 65 mm in height, weighing 347 g.

Certifications & Compliance

  • UL Rated: 700V
  • IEC Rated: 690V
  • Compliance documentation available; contact factory for additional certification details.

Technical Specifications

  • Amperage Rating: 160 A
  • Application: semiconductor protection
  • Compliances: Contact factory
  • Fuse Shape: Square body, slotted center bolted tags
  • Insulated Metal Gripping Lugs (IMGL): No
  • Packaging Type: Standard
  • Product Height: 65 mm
  • Product Length Depth: 145 mm
  • Product Weight: 347 g
  • Product Width: 305 mm
  • Utilization Category: aR (accompanied semiconductor protection)
  • Voltage Rating: 690 V
  • Voltage Type: AC

Typical Applications

  • Power Semiconductor Protection
  • Variable Frequency Drives and Power Electronics
  • Industrial Motor Control Protection
  • High-Speed Circuit Protection for Rectifiers and Converters
  • Panelboard and Switchgear Fault Protection

Why Bussmann?

Bussmann by Eaton engineers its high-speed Class aR fuses to deliver dependable, fast-clearing protection for sensitive power semiconductor equipment. With a 200 kAIC interrupt rating, a rugged square body construction with bolted tag terminations, and a top fuse status indicator for fast field verification, the 170M3903 supports reliable, code-compliant performance in demanding industrial electrical systems.

Manufacturer Resources

Product Specs

Amperage Rating:
160 A
Application:
semiconductor protection
Class:
Class aR
Compliances:
Contact factory
Fuse Indicator:
Top fuse status indicator
Fuse Shape:
Square body, slotted center bolted tags
Insulated Metal Gripping Lugs Imgl:
No
Interrupt Rating:
200 kAIC
Packaging Type:
Standard
Product Height:
65 mm
Product Length Depth:
145 mm
Product Weight:
347 g
Product Width:
305 mm
Utilization Category:
aR (accompanied semiconductor protection)
Voltage Rating:
690 V
Voltage Type:
AC
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Details:
Fuse

Bussmann 170M3903 – Frequently Asked Questions

How fast can I get the Bussmann 170M3903 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 170M3903 come with a warranty?
Absolutely. The Bussmann 170M3903 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 170M3903?
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
Why buy the Bussmann 170M3903 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.