Bussmann 170M5742 Class aR Hig...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,451.99
Bussmann 170M5742 High Speed Fuse

Bussmann 170M5742 Class aR High Speed Fuse, 400A, 1000Vac

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Model: 170M5742
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,451.99
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Bussmann 170M5742 Class aR High Speed Fuse, 400A, 1000Vac

This Bussmann Class aR high-speed square body fuse is engineered for demanding DC power protection applications. Rated 400A (400A RMS) at 1000Vac with a 100 kAIC interrupt rating, it delivers reliable overcurrent protection for DC common bus systems, DC drives, power converters/rectifiers, and reduced voltage starters. Its non-indicating, square body US-style design is UL Recognized, CSA Certified, and IEC rated, with RoHS compliance and CE marking for use in industrial power electronics.

Key Features

  • Current Rating: 400A (400A RMS) for high-capacity DC circuit protection.
  • Voltage Rating: 1000 Vac for use in demanding power electronics applications.
  • Class aR Design: High-speed Class aR fuse construction suited for semiconductor and DC drive protection.
  • Interrupt Rating: 100 kAIC for dependable short-circuit protection.
  • Fuse Indicator: Non Indicating design.
  • Watt Losses: 85W.
  • Body Style: Square body US style construction, -FKE/115 type K indicator for micro.
  • I²t Ratings: Pre-Arc I²t of 23000; Clearing I²t of 140000 at 1000V and 180000 at 1250V.

Certifications & Compliance

  • CSA Certified
  • IEC Rated
  • UL Recognized
  • RoHS Compliant
  • CE Marked

Technical Specifications

  • Amperage Rating: 400A
  • Application: DC common bus, DC drives, power converters/rectifiers, reduced voltage starters
  • Class: Class aR
  • Clearing I2t: Clearing at 1000V: 140000 , Clearing at 1250V: 180000
  • Current Rating: 400A RMS
  • Fuse Indicator: Non Indicating
  • Interrupt Rating: 100 kAIC
  • Packaging Type: Standard
  • Pre Arc I2t: 23000
  • Voltage Rating: 1000 Vac
  • Watt Losses: 85W
  • Product Type: Square body US style, -FKE/115 type K indicator for micro
  • Product Length: 5.433 IN
  • Product Details: Square body US style, -FKE/115 type K indicator for micro
  • Product Height: 2.087 IN
  • Product Weight: 1.6456 LB
  • Product Width: .315 IN

Typical Applications

  • DC Common Bus Systems
  • DC Drives
  • Power Converters and Rectifiers
  • Reduced Voltage Starters
  • Industrial Power Electronics Protection

Why Bussmann?

Bussmann is a trusted name in circuit protection, and this Class aR high-speed fuse reflects that reputation with UL Recognized, CSA Certified, and IEC rated construction. Backed by RoHS compliance and CE marking, it delivers the dependable, code-compliant performance professionals need for critical DC power protection applications.

Manufacturer Resources

Product Specs

Amperage Rating:
400A
Class:
Class aR
Clearing I2t:
Clearing at 1000V: 140000 , Clearing at 1250V: 180000
Current Rating:
400A RMS
Fuse Indicator:
Non Indicating
Interrupt Rating:
100 kAIC
Packaging Type:
Standard
Pre Arc I2t:
23000
Voltage Rating:
1000 Vac
Watt Losses:
85W
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Length:
5.433 IN
Product Height:
2.087 IN
Product Weight:
1.6456 LB
Product Width:
.315 IN

Bussmann 170M5742 – Frequently Asked Questions

How fast can I get the Bussmann 170M5742 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 170M5742 come with a warranty?
Absolutely. The Bussmann 170M5742 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 170M5742?
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
Why buy the Bussmann 170M5742 from ZenSupply?
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