Bussmann 170M-395 High-Speed C...
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Bussmann 170M-395 High-Speed Class aR Square Body Fuse, 400A 1250V

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Model: 170M3956

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

$1,048.73
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Bussmann 170M-395 High-Speed Class aR Square Body Fuse, 400A 1250V

The Bussmann 170M-395 is an Eaton Bussmann series high-speed, square body fuse engineered for Class aR accompanied semiconductor protection. Rated 400A with a voltage rating of 1250V (IEC) / 1300V (UL) and a 150 kAIC interrupt rating, this fuse delivers fast-acting overcurrent protection for power semiconductor devices such as SCRs, diodes, and thyristors. The square body design features flush end contacts for compact, high-density mounting in power electronics assemblies. Built to IEC and UL fuse standards, it is CE marked for compliance in demanding industrial and drive applications.

Key Features

  • High-Speed Class aR Fuse: Purpose-built for accompanied semiconductor protection of SCRs, diodes, thyristors, and other power semiconductor devices.
  • Voltage Rating: 1250V (IEC) / 1300V (UL) for use in high-voltage power electronics circuits.
  • Current Rating: 400A continuous rating for reliable overcurrent protection in demanding applications.
  • Interrupt Rating: 150 kAIC short-circuit interrupting capacity for safe fault clearing.
  • Square Body, Flush End Contacts: Compact square body construction with flush end contacts for space-saving, high-density installation.
  • Compact Footprint: Measures 170 mm wide x 96 mm deep x 50 mm high, sized for defined mounting clearance.
  • Utilization Category aR: Accompanied semiconductor protection rating, intended as backup protection working with a semiconductor device's inherent short-circuit rating rather than as sole branch-circuit protection.

Certifications & Compliance

  • CE Marked
  • Rated to IEC (1250V) and UL (1300V) Voltage Standards

Technical Specifications

  • Application: semiconductor protection
  • Utilization Category: aR (accompanied semiconductor protection)
  • Product Height: 50 mm
  • Product Length Depth: 96 mm
  • Voltage Type: AC
  • Voltage Rating: 1000V
  • Insulated Metal Gripping Lugs Imgl: No
  • Packaging Type: Standard
  • Fuse Shape: Square body, flush end contacts
  • Compliances: CE Marked
  • Product Width: 170 mm

Typical Applications

  • Power Semiconductor Device Protection (SCRs, Diodes, Thyristors)
  • Variable Frequency Drives and Motor Drive Systems
  • Industrial Power Electronics Assemblies
  • Rectifier and Converter Circuit Protection
  • High-Voltage AC Power Distribution Equipment

Why Bussmann?

Eaton's Bussmann series is engineered to demanding IEC and UL fuse standards, and the 170M-395 Class aR fuse brings CE-marked, 150 kAIC interrupt-rated protection to sensitive semiconductor circuits. Its high-speed operation and square body, flush-contact design make it a dependable choice for engineers specifying accompanied semiconductor protection in professional power electronics and industrial drive systems.

Manufacturer Resources

Product Specs

Product Details:
Fuse
Application:
semiconductor protection
Utilization Category:
aR (accompanied semiconductor protection)
Product Type:
Fuse
Product Height:
50 mm
Interrupt Rating:
150 kAIC
Product Length Depth:
96 mm
Product Group:
Fuses
Voltage Type:
AC
Voltage Rating:
1000V
Product Subgroup:
Other Fuses
Insulated Metal Gripping Lugs Imgl:
No
Class:
Class aR
Packaging Type:
Standard
Fuse Indicator:
Other
Fuse Shape:
Square body, flush end contacts
Mounting Method:
Flush
Compliances:
CE Marked
Department:
Electrical
Product Width:
170 mm

Bussmann 170M3956 – Frequently Asked Questions

How fast can I get the Bussmann 170M3956 delivered?
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Does the Bussmann 170M3956 come with a warranty?
Absolutely. The Bussmann 170M3956 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 170M3956?
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