Bussmann 170M7978 Class aR 180...
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$5,323.39
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Bussmann 170M7978 Class aR 1800A/1250V Semiconductor Fuse, 4SBKN/105

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Model: 170M7978

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

$5,323.39
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Bussmann 170M7978 Class aR 1800A/1250V Semiconductor Fuse, 4SBKN/105

The Bussmann 170M7978 is a Class aR semiconductor protection fuse rated 1800A at 1250V AC, built to the 4SBKN/105 manufacturer designation for demanding power electronics applications. As an aR utilization category fuse, it is designed for accompanied semiconductor protection and backed by a 125 kAIC interrupt rating with flush mounting for panel integration. It is IEC Rated and CE Marked, reflecting compliance with recognized international standards for industrial fuse performance.

Key Features

  • Rated Configuration: 1800A at 1250V AC under manufacturer designation 4SBKN/105.
  • Utilization Category: Class aR (accompanied semiconductor protection), engineered to protect semiconductor devices from overcurrent.
  • Interrupt Rating: 125 kAIC for reliable current-limiting performance under high fault-current conditions.
  • Mounting Method: Flush mounting for compact, space-efficient panel integration.
  • Watt Losses: 260 W rated power dissipation.
  • Application: Purpose-built for semiconductor protection in power conversion equipment.

Certifications & Compliance

  • IEC Rated
  • CE Marked

Technical Specifications

  • Amperage Rating: 2500 A
  • Application: semiconductor protection
  • Certifications: IEC Rated
  • Class: Class aR
  • Clearing I2t: 28000000 at 1250 V
  • Compliances: CE Marked
  • Fuse Indicator: Other
  • Insulated Metal Gripping Lugs (IMGL): No
  • Interrupt Rating: 125 kAIC
  • Mounting Method: Flush
  • Packaging Type: Standard
  • Pre Arc I2t: 4500000
  • Product Height: .001 mm
  • Product Length Depth: .001 mm
  • Product Weight: .001 g
  • Product Width: .001 mm
  • Utilization Category: aR (accompanied semiconductor protection)
  • Voltage Rating: 1250 V
  • Voltage Type: AC
  • Watt Losses: 260 W

Typical Applications

  • Semiconductor Protection in Power Electronics
  • Variable Frequency Drives and Motor Controls
  • Rectifier and Power Conversion Equipment
  • Industrial Switchgear and Panelboards
  • High Fault-Current Industrial Systems

Why Bussmann?

Bussmann fuses are engineered for dependable overcurrent protection in demanding industrial environments. The 170M7978 Class aR fuse is IEC Rated and CE Marked, with a 125 kAIC interrupt rating that supports code-compliant performance for semiconductor protection applications. Choose Bussmann for consistent, professional-grade electrical protection.

Manufacturer Resources

Product Specs

Amperage Rating:
2500 A
Application:
semiconductor protection
Certifications:
IEC Rated
Class:
Class aR
Clearing I2t:
28000000 at 1250 V
Compliances:
CE Marked
Fuse Indicator:
Other
Insulated Metal Gripping Lugs Imgl:
No
Interrupt Rating:
125 kAIC
Mounting Method:
Flush
Packaging Type:
Standard
Pre Arc I2t:
4500000
Product Height:
.001 mm
Product Length Depth:
.001 mm
Product Weight:
.001 g
Product Width:
.001 mm
Utilization Category:
aR (accompanied semiconductor protection)
Voltage Rating:
1250 V
Voltage Type:
AC
Watt Losses:
260 W
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Details:
Fuse

Bussmann 170M7978 – Frequently Asked Questions

How fast can I get the Bussmann 170M7978 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 170M7978 come with a warranty?
Absolutely. The Bussmann 170M7978 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 170M7978?
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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