Bussmann 170M3709 Class aR Hig...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$745.21
Bussmann 170M3709 High Speed Fuse

Bussmann 170M3709 Class aR High-Speed Fuse, 50A, 200 kAIC

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Model: 170M3709
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$745.21
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Bussmann 170M3709 Class aR High-Speed Fuse, 50A, 200 kAIC

The Bussmann 170M3709 is a Class aR high-speed square body fuse engineered for demanding DC power protection applications. Rated 50A RMS with a blade end x blade end connection, this fuse delivers a 200 kAIC interrupt rating for reliable short-circuit protection in DC common bus systems, DC drives, and power converters/rectifiers. Its Class aR high-speed design provides fast clearing performance while withstanding the normal inrush and overload currents typical of power electronics circuits.

Key Features

  • Amperage Rating: 50A RMS for DC common bus, DC drives, and power converter/rectifier circuits.
  • Connection: Blade end x blade end terminals for compatible fuse block/holder mounting.
  • Interrupt Rating: 200 kAIC interrupt rating supports high fault-current environments.
  • Class aR High-Speed Design: Fast-clearing construction protects semiconductor devices from short-circuit damage while allowing normal overload currents.
  • Fuse Indicator: Non indicating design.
  • Electrical Characteristics: Pre-arc I2t of 77 and clearing I2t of 515 at 660V for precise coordination with protected equipment.
  • Watt Losses: 11W power dissipation rating.

Certifications & Compliance

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

Technical Specifications

  • Amperage Rating: 50A
  • Application: DC common bus, DC drives, power converters/rectifiers
  • Class: Class aR
  • Clearing I2t: Clearing at 660V: 515
  • Connection: Blade end X blade end
  • Current Rating: 50A RMS
  • Fuse Indicator: Non Indicating
  • Interrupt Rating: 200 kAIC
  • Packaging Type: Standard
  • Pre Arc I2t: 77
  • Watt Losses: 11W
  • Product Type: Square body, US style -FU/115 without indicator
  • Product Length: 5.433 IN
  • Product Details: Square body, US style -FU/115 without indicator
  • Product Height: 2.087 IN
  • Product Weight: 1.6456 LB
  • Product Width: .315 IN

Typical Applications

  • DC Common Bus Protection
  • DC Drive Systems
  • Power Converters and Rectifiers
  • Semiconductor and Power Electronics Circuit Protection

Why Bussmann?

Bussmann fuses are built for demanding power protection applications where reliability and precise fault clearing matter. The Class aR high-speed design, 200 kAIC interrupt rating, and UL Recognized, IEC Rated construction make this fuse a trusted choice for DC common bus, drive, and power converter protection in professional electrical and industrial installations.

Manufacturer Resources

Product Specs

Amperage Rating:
50A
Application:
DC common bus, DC drives, power converters/rectifiers
Class:
Class aR
Clearing I2t:
Clearing at 660V: 515
Connection:
Blade end X blade end
Current Rating:
50A RMS
Fuse Indicator:
Non Indicating
Interrupt Rating:
200 kAIC
Packaging Type:
Standard
Pre Arc I2t:
77
Watt Losses:
11W
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Length:
5.433 IN
Product Details:
Square body, US style -FU/115 without indicator
Product Height:
2.087 IN
Product Weight:
1.6456 LB
Product Width:
.315 IN

Bussmann 170M3709 – Frequently Asked Questions

How fast can I get the Bussmann 170M3709 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 170M3709 come with a warranty?
Absolutely. The Bussmann 170M3709 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 170M3709?
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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