Bussmann 170M4259 High-Speed S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,157.91
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Bussmann 170M4259 High-Speed Square Body Fuse, Class aR, 250A

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Model: 170M4259

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

$1,157.91
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Bussmann 170M4259 High-Speed Square Body Fuse, Class aR, 250A

The Bussmann 170M4259 is an Eaton Bussmann series high-speed square body fuse engineered for demanding semiconductor protection applications. Rated 700V (UL) and 690V (IEC) at 250A with a 200 kAIC interrupt rating, this Class aR fuse features blade end x blade end terminals and conforms to the DIN 43 620 mounting standard. Its square body construction with slotted center bolted tags delivers reliable, high-speed clearing performance for AC circuits, backed by UL Recognized and CE Marked compliance for professional electrical systems.

Key Features

  • Voltage & Current Rating: 700V (UL) / 690V (IEC) at 250A for demanding high-speed protection circuits.
  • Interrupt Rating: 200 kAIC provides high short-circuit interrupting capacity.
  • Class aR Design: Utilization Category aR (accompanied semiconductor protection) for use alongside semiconductor devices.
  • Square Body Construction: Square body with slotted center bolted tags and blade end x blade end terminal connections.
  • Fast-Acting Performance: Pre-arc I2t of 155000 and clearing I2t of 42000 at 660V deliver high-speed current-limiting protection.
  • DIN 43 620 Compliant: Conforms to the DIN 43 620 mounting standard for compatibility with standard fuse holders.
  • AC Voltage Type: Designed for AC voltage systems in industrial semiconductor protection applications.

Certifications & Compliance

  • UL Recognized
  • CE Marked

Technical Specifications

  • Amperage Rating: 250 A
  • Application: semiconductor protection
  • Certifications: UL Recognized
  • Clearing I2t: 42000 at 660 V
  • Clearing Loss: 55
  • Compliances: CE Marked
  • Fuse Shape: Square body, slotted center bolted tags
  • Insulated Metal Gripping Lugs (IMGL): No
  • Packaging Type: Standard
  • Pre Arc I2t: 155000
  • Product Height: 62 mm
  • Product Length Depth: 245 mm
  • Product Weight: 499.33 g
  • Product Width: 142 mm
  • Utilization Category: aR (accompanied semiconductor protection)
  • Voltage Rating: 690 V
  • Voltage Type: AC

Typical Applications

  • Semiconductor Protection Circuits
  • Power Electronics and Drive Systems
  • Industrial High-Speed Fuse Applications
  • AC Voltage Protection Systems
  • OEM Equipment Requiring DIN 43 620 Fuses

Why Bussmann?

Bussmann is a recognized leader in circuit protection, and the 170M4259 reflects that engineering standard with UL Recognized and CE Marked compliance, robust square body construction, and precise Class aR semiconductor protection characteristics. Electrical professionals rely on Bussmann high-speed fuses for dependable, code-compliant performance in demanding industrial power electronics applications.

Manufacturer Resources

Product Specs

Amperage Rating:
250 A
Application:
semiconductor protection
Certifications:
UL Recognized
Class:
Class aR
Clearing I2t:
42000 at 660 V
Clearing Loss:
55
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:
155000
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 170M4259 – Frequently Asked Questions

How fast can I get the Bussmann 170M4259 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 170M4259 come with a warranty?
Absolutely. The Bussmann 170M4259 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 170M4259?
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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