Bussmann 170M4743 Eaton Series...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,413.55
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Bussmann 170M4743 Eaton Series High-Speed Square Body Fuse, 1000V 400A Class aR

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Model: 170M4743

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

$1,413.55
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Bussmann 170M4743 Eaton Series High-Speed Square Body Fuse, 1000V 400A Class aR

The Bussmann 170M4743 is an Eaton series high-speed square body fuse engineered for semiconductor protection in demanding power electronics applications. Rated 1000V and 400A with a 100 kAIC interrupt rating, this Class aR fuse uses a square body design with center bolted tags for reliable, low-resistance connections. Its high-speed operating characteristics make it well suited for accompanied semiconductor protection where fast clearing and precise current limiting are critical, and the fuse carries an IEC rating for use in compliant electrical systems.

Key Features

  • Amperage Rating: 400A rating delivers dependable overcurrent protection for high-power circuits.
  • Voltage Rating: Rated 1000V in operation with a 1250V voltage rating, supporting demanding AC power electronics systems.
  • Fuse Shape: Square body construction with center bolted tags for secure, low-impedance busbar connections.
  • Utilization Category: Class aR (accompanied semiconductor protection) for coordinated protection of semiconductor devices.
  • Interrupt Rating: 100 kAIC interrupting capacity for high fault-current environments.
  • I²t Characteristics: Pre-arc I²t of 29500 and clearing I²t of 175000 at 1000V (235000 at 1250V) for precise current-limiting performance.
  • Watt Losses: 75W watt loss rating supports accurate thermal system design.
  • Dimensions: Product measures 170 mm wide x 73 mm deep x 52 mm high.

Certifications & Compliance

  • IEC Rated
  • CE Marked

Technical Specifications

  • Amperage Rating: 400 A
  • Application: semiconductor protection
  • Certifications: IEC Rated
  • Clearing I2t: 175000 at 1000 V, 235000 at 1250 V
  • Compliances: CE Marked
  • Fuse Shape: Square body, center bolted tags
  • Insulated Metal Gripping Lugs (IMGL): No
  • Packaging Type: Standard
  • Pre Arc I2t: 29500
  • Product Height: 52 mm
  • Product Length Depth: 73 mm
  • Product Weight: .655 g
  • Product Width: 170 mm
  • Utilization Category: aR (accompanied semiconductor protection)
  • Voltage Rating: 1250 V
  • Voltage Type: AC
  • Watt Losses: 75 W

Typical Applications

  • Semiconductor Protection
  • Power Electronics and Converter Circuits
  • Variable Frequency Drives
  • Rectifier and Inverter Protection
  • Industrial Power Conversion Equipment

Why Bussmann?

Bussmann by Eaton engineers this high-speed square body fuse with precise pre-arc and clearing I²t characteristics, a 100 kAIC interrupt rating, and IEC-rated, CE marked construction for dependable performance. The center bolted tag square body design and Class aR utilization category make it a trusted choice for coordinated semiconductor protection in professional power electronics installations.

Manufacturer Resources

Product Specs

Amperage Rating:
400 A
Application:
semiconductor protection
Certifications:
IEC Rated
Class:
Class aR
Clearing I2t:
175000 at 1000 V, 235000 at 1250 V
Compliances:
CE Marked
Fuse Indicator:
Other
Fuse Shape:
Square body, center bolted tags
Insulated Metal Gripping Lugs Imgl:
No
Interrupt Rating:
100 kAIC
Packaging Type:
Standard
Pre Arc I2t:
29500
Product Height:
52 mm
Product Length Depth:
73 mm
Product Weight:
.655 g
Product Width:
170 mm
Utilization Category:
aR (accompanied semiconductor protection)
Voltage Rating:
1250 V
Voltage Type:
AC
Watt Losses:
75 W
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Details:
Fuse

Bussmann 170M4743 – Frequently Asked Questions

How fast can I get the Bussmann 170M4743 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 170M4743 come with a warranty?
Absolutely. The Bussmann 170M4743 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 170M4743?
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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