Bussmann 170M4263 High-Speed S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,095.30
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Bussmann 170M4263 High-Speed Square Body Fuse, 450A Class aR

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Model: 170M4263

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

$1,095.30
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Bussmann 170M4263 High-Speed Square Body Fuse, 450A Class aR

The Bussmann 170M4263 is an Eaton Bussmann series high-speed square body fuse engineered for semiconductor protection in demanding power electronics applications. Rated 700V (UL) / 690V (IEC) with a 450A amperage rating and a 200 kAIC interrupting rating, this Class aR fuse features blade end x blade end terminals sized to DIN 43 620 standards for reliable, code-compliant installation. Its square body, slotted center bolted tag design and AC voltage rating make it well suited for protecting power semiconductors such as SCRs and diodes in industrial drive and rectifier systems.

Key Features

  • Amperage Rating: 450A for high-current semiconductor protection circuits.
  • Voltage Rating: 700V (UL) / 690V (IEC) AC for demanding power electronics applications.
  • Utilization Category: Class aR (accompanied semiconductor protection) for use alongside other overcurrent devices.
  • Fuse Shape: Square body with slotted, center bolted tags and blade end x blade end terminals sized to DIN 43 620.
  • Interrupting Rating: 200 kAIC for high fault-current withstand in critical circuits.
  • Clearing I2t: 170000 at 660V, with a Pre-Arc I2t of 8500 for coordinated semiconductor protection.
  • Clearing Loss: 70 for predictable thermal performance in continuous duty.
  • Voltage Type: AC for use in industrial power distribution circuits.

Certifications & Compliance

  • UL Recognized
  • CE Marked

Technical Specifications

  • Amperage Rating: 450 A
  • Application: semiconductor protection
  • Certifications: UL Recognized
  • Clearing I2t: 170000 at 660 V
  • Clearing Loss: 70
  • Compliances: CE Marked
  • Fuse Shape: Square body, slotted center bolted tags
  • Insulated Metal Gripping Lugs (IMGL): No
  • Packaging Type: Standard
  • Pre Arc I2t: 8500
  • Product Height: 62 mm
  • Product Length Depth: 245 mm
  • Product Weight: 499.3333333 g
  • Product Width: 142 mm
  • Utilization Category: aR (accompanied semiconductor protection)
  • Voltage Rating: 690 V
  • Voltage Type: AC

Typical Applications

  • Semiconductor Protection for SCRs and Power Diodes
  • Variable Frequency Drives and Rectifier Circuits
  • Industrial Power Electronics and Converter Systems
  • High Fault-Current Industrial Distribution Panels

Why Bussmann?

As part of the Eaton Bussmann series, the 170M4263 delivers the high-speed clearing characteristics and Class aR semiconductor protection that industrial power electronics demand. Built to DIN 43 620 dimensions with UL Recognized and CE Marked compliance, this square body fuse offers dependable, code-compliant overcurrent protection for critical drive and converter applications.

Manufacturer Resources

Product Specs

Amperage Rating:
450 A
Application:
semiconductor protection
Certifications:
UL Recognized
Class:
Class aR
Clearing I2t:
170000 at 660 V
Clearing Loss:
70
Compliances:
CE Marked
Connection:
Blade end x blade end
Fuse Indicator:
Other
Fuse Shape:
Square body, slotted center bolted tags
Insulated Metal Gripping Lugs Imgl:
No
Interrupt Rating:
200 kAIC
Mounting Method:
DIN 43 620
Packaging Type:
Standard
Pre Arc I2t:
8500
Product Height:
62 mm
Product Length Depth:
245 mm
Product Weight:
499.3333333 g
Product Width:
142 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 170M4263 – Frequently Asked Questions

How fast can I get the Bussmann 170M4263 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 170M4263 come with a warranty?
Absolutely. The Bussmann 170M4263 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 170M4263?
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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