Bussmann 170M5661 Class aR Hig...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,248.14
Bussmann 170M5661 High Speed Fuse

Bussmann 170M5661 Class aR High Speed Fuse, 550A, 700V AC

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Model: 170M5661
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,248.14
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Bussmann 170M5661 Class aR High Speed Fuse, 550A, 700V AC

The Bussmann 170M5661 is a Class aR high speed fuse rated 550A RMS and 700 Vac (UL) / 690 Vac (IEC), engineered to protect DC common bus systems, DC drives, and power converters and rectifiers in demanding industrial power circuits. With a 200 kAIC interrupt rating and a blade end x blade end connection, this fuse is built for fast, precise current-limiting protection where high fault currents and rapid clearing are critical to equipment survival.

Key Features

  • Amperage Rating: 550A RMS supports high-current DC bus, drive, and converter circuits.
  • Class aR Construction: Class aR high speed fuse design suited to DC drive and power converter/rectifier protection.
  • Voltage Rating: 700 Vac (UL), 690 Vac (IEC) supports both UL and IEC-rated installations.
  • Interrupt Rating: 200 kAIC delivers reliable interruption of high fault currents.
  • Connection: Blade end x blade end termination fits standard fuse holders and blocks.
  • Fuse Indicator: Non-indicating design.
  • Let-Through Energy: Pre-arc I2t of 28000 and clearing I2t of 190000 at 660V support coordinated circuit protection.
  • Watt Losses: 80W rated power dissipation.
  • Packaging: Standard packaging type.

Certifications & Compliance

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

Technical Specifications

  • Amperage Rating: 550A
  • Application: DC common bus, DC drives, power converters/rectifiers
  • Class: Class aR
  • Clearing I2t: Clearing at 660V: 190000
  • Connection: Blade end X blade end
  • Current Rating: 550A RMS
  • Fuse Indicator: Non Indicating
  • Interrupt Rating: 200 kAIC
  • Packaging Type: Standard
  • Pre Arc I2t: 28000
  • Voltage Rating: 700 Vac (UL), 690 Vac (IEC)
  • Watt Losses: 80W
  • Product Length: 5.433 IN
  • Product Height: 2.087 IN
  • Product Width: .315 IN
  • Product Weight: 1.6456 LB

Typical Applications

  • DC Common Bus Systems
  • DC Drive Protection
  • Power Converter and Rectifier Circuits
  • Industrial DC Power Distribution
  • Semiconductor and Rectifier Circuit Protection

Why Bussmann?

Bussmann high speed fuses combine Class aR construction, a 200 kAIC interrupt rating, and UL Recognized and IEC Rated performance to deliver dependable protection for demanding DC power systems. RoHS compliance and CE marking further support code-compliant, reliable performance for professional electrical installations.

Manufacturer Resources

Product Specs

Amperage Rating:
550A
Application:
DC common bus, DC drives, power converters/rectifiers
Class:
Class aR
Clearing I2t:
Clearing at 660V: 190000
Connection:
Blade end X blade end
Current Rating:
550A RMS
Fuse Indicator:
Non Indicating
Interrupt Rating:
200 kAIC
Packaging Type:
Standard
Pre Arc I2t:
28000
Voltage Rating:
700 Vac (UL), 690 Vac (IEC)
Watt Losses:
80W
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Length:
5.433 IN
Product Details:
Square body, US style -FKE/- type K indicator for micro
Product Height:
2.087 IN
Product Weight:
1.6456 LB
Product Width:
.315 IN

Bussmann 170M5661 – Frequently Asked Questions

How fast can I get the Bussmann 170M5661 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 170M5661 come with a warranty?
Absolutely. The Bussmann 170M5661 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 170M5661?
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 170M5661 from ZenSupply?
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