Bussmann 170M-855 High Speed S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,543.60
Bussmann 170M-855 High Speed Square Body Fuse, Class aR, 690V

Bussmann 170M-855 High Speed Square Body Fuse, Class aR, 690V

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Model: 170M8555D

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

$2,543.60
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Bussmann 170M-855 High Speed Square Body Fuse, Class aR, 690V

The Bussmann 170M-855 is an Eaton Bussmann series high speed square body fuse engineered for demanding industrial power protection, available in amperage ratings from 1400A to 1600A. This fuse features Din 43-620 blade end x Din 43-620 blade end terminal connections, a 690V voltage rating, and a 200 kAIC interrupting rating for dependable performance in high fault-current applications. A built-in combination fuse status indicator provides quick visual confirmation of fuse condition, while the Class aR utilization category makes it well suited for accompanied semiconductor protection in industrial equipment.

Key Features

  • Amp Rating Range: Available in ratings from 1400A to 1600A to match a range of industrial circuit protection requirements.
  • Durable Construction: Square body design with knife blade contacts for a secure, low-resistance connection.
  • Blade End Connection: Din 43-620 blade end x Din 43-620 blade end configuration for standardized mounting in fuse holders and disconnects.
  • High Interrupting Rating: 200 kAIC rating supports use in high fault-current industrial power systems.
  • Combination Status Indicator: Built-in blown-fuse indicator allows fast visual identification of a tripped fuse.
  • Utilization Category: Class aR (accompanied semiconductor protection) for protecting semiconductor devices from overcurrent.
  • Voltage Rating: Rated 690V AC for industrial power distribution circuits.
  • Compact Footprint: Product dimensions of 71 mm width x 87 mm height x 150 mm depth.

Certifications & Compliance

  • CE Marked

Technical Specifications

  • Voltage Type: AC
  • Product Width: 71 mm
  • Utilization Category: aR (accompanied semiconductor protection)
  • Packaging Type: Standard
  • Fuse Shape: Square body, knife blade contacts
  • Product Height: 87 mm
  • Application: industrial
  • Insulated Metal Gripping Lugs Imgl: No
  • Compliances: CE Marked
  • Product Length Depth: 150 mm
  • Voltage Rating: 690V

Typical Applications

  • Industrial Electrical Power Distribution
  • Semiconductor Overcurrent Protection Circuits
  • High-Speed Fuse Panels and Disconnects
  • Combination Motor Controller Circuits
  • Din-Rail and Blade-Type Fuse Holder Systems

Why Bussmann?

Bussmann by Eaton engineers this high speed square body fuse with a 200 kAIC interrupting rating, Din 43-620 blade end connections, and CE Marked compliance, giving electrical professionals a dependable option for demanding industrial protection schemes. The combination status indicator and Class aR semiconductor protection rating help ensure fast fault identification and code-compliant performance across the 1400A to 1600A rating range.

Manufacturer Resources

Product Specs

Product Group:
Fuses
Class:
Class aR
Voltage Type:
AC
Product Width:
71 mm
Utilization Category:
aR (accompanied semiconductor protection)
Packaging Type:
Standard
Connection:
Din 43-620 blade end x Din 43-620 blade end
Product Type:
Fuse
Interrupt Rating:
200 kAIC
Fuse Shape:
Square body, knife blade contacts
Product Height:
87 mm
Product Details:
Fuse
Application:
industrial
Insulated Metal Gripping Lugs Imgl:
No
Product Subgroup:
Other Fuses
Compliances:
CE Marked
Product Length Depth:
150 mm
Department:
Electrical
Fuse Indicator:
Combination fuse status indicator
Voltage Rating:
690V
Amperage Rating:
1400A - 1600A
Connection Type:
DIN 43-620 Blade Terminal
Standards:
CE Marked

Bussmann 170M8555D – Frequently Asked Questions

1) What amp ratings does the Bussmann 170M-855 square body fuse come in, and what part number do I order?
Three ratings cover the 170M-855 group: 1400A (170M8555D), 1500A (170M8556D) and 1600A (170M8557D). The amp rating is the only thing that changes between them, so pick the rating your drive or rectifier calls for and order that specific number. All three are 690V AC square body high speed fuses.
2) Will a 170M-855 fuse mount in my existing DIN blade fuse holder?
The 170M-855 uses a DIN 43-620 blade end on both ends, so it bolts into holders and disconnects built to that standard. Body size is 71 mm wide, 87 mm high and 150 mm deep, so confirm your holder centers and enclosure clearance match a DIN 43-620 size 3 style opening before you order.
3) Can I use a Class aR fuse as the branch circuit or cable protection for my drive?
No. The 170M-855 is a Class aR fuse, meaning accompanied semiconductor protection: it protects the semiconductor devices against short circuits but is only a partial-range device and does not clear low-level overloads. It has to work alongside a separate overload or branch circuit protective device. If you need full-range protection on its own, you want a gR/gS type rather than aR.
4) Is a 690V rated fuse acceptable on a 480V industrial system?
Yes. The 170M-855 is rated 690V AC, and a fuse may be applied at or below its voltage rating, so 480V and 600V systems are fine. What it cannot do is go above 690V AC, and it is rated for AC only, so do not apply it on a DC link without a DC-rated device.
5) What is the interrupting rating on the Bussmann 170M-855, and is it enough for a high fault current service?
200 kAIC. That covers industrial distribution points with heavy available fault current, such as large transformer secondaries feeding drive lineups. Compare it against the calculated available fault current at the point of installation; anything at or below 200 kA is within the fuse's rating.
6) How do I tell if one of these fuses has blown without pulling it out of the holder?
Each 170M-855 carries a combination fuse status indicator, a built-in blown-fuse pop indicator you can read visually at the holder. The combination type also allows a microswitch to be actuated for remote signalling, which matters in a lineup where a single opened fuse on one phase would otherwise go unnoticed until the drive faults.
7) Does the 170M-855 come with insulated metal gripping lugs?
No. This version is supplied without IMGL (insulated metal gripping lugs), so the blades are plain DIN 43-620 knife contacts for bolted mounting. If your spec calls for the gripping lug style for tool-free handling, that is a different catalog variant.
8) Does this Bussmann high speed fuse carry any compliance marking for a European-built machine?
CE marked. That is the compliance statement carried on the 170M-855 square body fuse, which is consistent with its DIN 43-620 blade terminal format for European and export industrial equipment.
How fast can I get the Bussmann 170M8555D 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 170M8555D come with a warranty?
Absolutely. The Bussmann 170M8555D 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 170M8555D?
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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