Bussmann 170M-484 High-Speed S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$8,057.35
Bussmann 170M-484 High-Speed Square Body Fuse, Class aR

Bussmann 170M-484 High-Speed Square Body Fuse, Class aR

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Model: 170M4847

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

$8,057.35
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Bussmann 170M-484 High-Speed Square Body Fuse, Class aR, 700V/690V

The Bussmann 170M-484 High-Speed Square Body Fuse, part of the Eaton Bussmann series, is engineered for accompanied semiconductor protection, carrying a Class aR utilization category and a top-mounted fuse status indicator for fast, safe visual condition checks in the field. This family is available in 80A, 160A, and 200A ratings, sharing a 700V (UL) and 690V (IEC) voltage rating across every amp option in the line. The high-speed square body design is built to react quickly to overcurrent conditions, helping protect sensitive power semiconductors used in rectifiers, drives, and power conversion equipment from damaging fault currents.

Key Features

  • Amp Rating Range: Offered in 80A, 160A, and 200A versions so you can match the fuse to your semiconductor protection load requirements.
  • Voltage Rating: Rated 700V (UL) and 690V (IEC), suitable for demanding power conversion and industrial power circuits.
  • Utilization Category: Class aR (accompanied semiconductor protection), intended for coordinated protection schemes alongside other overcurrent devices.
  • Fuse Status Indicator: Top-mounted indicator provides a quick visual read on fuse condition without having to remove the fuse from its mounting.
  • Square Body Construction: High-speed square body design measuring 73 mm wide x 57 mm high x 416 mm long/deep for standardized mounting.
  • Packaging: Standard packaging type for straightforward stocking, handling, and distribution.

Certifications & Compliance

  • UL Rated, 700V
  • IEC Rated, 690V

Technical Specifications

  • Product Width: 73 mm
  • Product Height: 57 mm
  • Product Length Depth: 416 mm
  • Utilization Category: aR (accompanied semiconductor protection)
  • Application: semiconductor protection
  • Packaging Type: Standard
  • Insulated Metal Gripping Lugs Imgl: No
  • Compliances: Contact factory
  • Voltage Rating: 4500V

Typical Applications

  • Semiconductor Protection Circuits
  • Power Conversion and Rectifier Equipment
  • Industrial and Commercial Electrical Systems
  • High-Speed Fault Current Protection
  • Drives and Power Electronics Assemblies

Why Bussmann?

Eaton's Bussmann series brings deep fuse engineering experience to this high-speed square body fuse, pairing a Class aR utilization rating with a top status indicator for practical field verification. Backed by defined voltage ratings for both UL and IEC markets across the 80A-200A range, it is built to deliver dependable, code-aligned overcurrent protection for sensitive semiconductor loads in professional electrical and industrial power systems.

Manufacturer Resources

Product Specs

Product Group:
Fuses
Class:
Class aR
Product Width:
73 mm
Utilization Category:
aR (accompanied semiconductor protection)
Packaging Type:
Standard
Product Type:
Fuse
Product Height:
57 mm
Product Details:
Fuse
Application:
semiconductor protection
Insulated Metal Gripping Lugs Imgl:
No
Product Subgroup:
Other Fuses
Compliances:
Contact factory
Product Length Depth:
416 mm
Department:
Electrical
Fuse Indicator:
Top fuse status indicator
Voltage Rating:
4500V
Series:
170M
Grade:
Class aR
Amperage Rating:
80A-200A

Bussmann 170M4847 – Frequently Asked Questions

1) What does Class aR mean on the Bussmann 170M-484 fuse, and can I use it as my only overcurrent device?
Class aR is an accompanied semiconductor protection rating, which means the 170M-484 is a partial-range device. It clears high fault currents fast to protect semiconductors, but it is not intended to stand alone for overload protection. Pair it with a breaker or other overcurrent device that handles the low-multiple overload range. If you need a full-range device that covers overload as well, an aR fuse is the wrong choice.
2) Which amp ratings does the Bussmann 170M-484 come in and what are the part numbers?
Three ratings in the 170M-484 group: 80A is 170M4843, 160A is 170M4847, and 200A is 170M4848. All three sit in the same 80A to 200A family, so order by the specific MPN rather than the 170M-484 base reference.
3) What are the body dimensions of the Bussmann 170M-484 square body fuse for fitting my holder or bus bar spacing?
The 170M-484 body measures 73 mm wide, 57 mm high, and 416 mm long/deep. That 416 mm length is the number that usually decides the job, since it sets the bolt center span and the clearance you need inside the enclosure. Check your existing mounting pads against it before you swap.
4) How do I tell if a Bussmann 170M-484 has blown without pulling it out of the circuit?
It carries a top-mounted fuse status indicator, so a maintenance tech can read the fuse condition visually from the front of the assembly with the fuse still bolted in place. That matters when the fuse sits behind a bus stack where removal means a full shutdown.
5) Does the 170M-484 fuse come with insulated metal gripping lugs?
No. The 170M-484 is built without IMGL (insulated metal gripping lugs). If your standard practice or a spec calls for insulated gripping lugs for handling, you need a different variant of the 170M line, not this one.
6) What kind of equipment is the Bussmann 170M series high-speed fuse actually used in?
Semiconductor protection is the stated application: rectifiers, variable frequency drives, power conversion equipment, and other power electronics assemblies where SCRs, diodes, or IGBTs have to be protected from fault current. A standard branch-circuit fuse clears too slowly to save those devices, which is what the high-speed square body design is for.
7) Is the Bussmann 170M-484 a bolt-in fuse or a clip-style cartridge?
Square body construction, which is a bolted-mount format rather than a ferrule or blade cartridge that drops into clips. It bolts to bus bars or to a dedicated square body fuse base, so plan on landing lugs and torqued connections rather than a pull-out holder.
How fast can I get the Bussmann 170M4847 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 170M4847 come with a warranty?
Absolutely. The Bussmann 170M4847 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 170M4847?
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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