Bussmann 170M-418 Eaton Series...
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$1,422.56
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Bussmann 170M-418 Eaton Series 160A Class aR Square Body Fuse, 1250V IEC

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Model: 170M4188

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

$1,422.56
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Bussmann 170M-418 Eaton Series 160A Class aR Square Body Fuse, 1250V IEC

The Bussmann 170M-418 Eaton Series high-speed square body fuse delivers accompanied semiconductor protection (Class aR, Utilization Category aR) in a compact DIN 43 620 square body design with slotted center bolted tags. Rated 1250V (IEC) / 1300V (UL), 160A, and 100 kAIC, this fuse is engineered for demanding power semiconductor circuits where fast clearing and high interrupting capacity are critical. A top fuse status indicator gives installers a quick visual check of fuse condition, simplifying maintenance and troubleshooting. The unit is CE marked for use in compliant industrial electrical systems.

Key Features

  • High-Speed Class aR Fuse: Built for accompanied semiconductor protection (Utilization Category aR) in power electronics and drive circuits.
  • Dual Voltage Rating: Rated 1250V (IEC) / 1300V (UL) for use across international and North American semiconductor protection schemes.
  • Amperage Rating: 160A rated for reliable current-carrying capacity in high-power circuits.
  • Interrupting Rating: 100 kAIC interrupting capacity for demanding fault-current conditions.
  • Square Body Construction: Square body fuse shape with slotted center bolted tags built to the DIN 43 620 dimensional standard.
  • Top Fuse Status Indicator: Indicator mounted on top of the fuse for fast visual verification of fuse condition during inspection.

Certifications & Compliance

  • CE Marked

Technical Specifications

  • Application: semiconductor protection
  • Utilization Category: aR (accompanied semiconductor protection)
  • Voltage Type: AC
  • Insulated Metal Gripping Lugs Imgl: No
  • Packaging Type: Standard
  • Fuse Shape: Square body, slotted center bolted tags
  • Compliances: CE Marked

Typical Applications

  • Semiconductor Protection in Power Electronics
  • Variable Frequency Drives and Motor Drive Circuits
  • Rectifier and Converter Circuit Protection
  • Industrial Power Distribution Systems
  • High-Speed Fault Current Interruption for Sensitive Semiconductor Loads

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and the 170M-418 reflects that standard with a CE marked, DIN 43 620 square body design built for accompanied semiconductor protection. With a 160A rating, 100 kAIC interrupting capacity, and a top fuse status indicator for fast diagnostics, this fuse supports reliable, code-compliant performance in demanding industrial power electronics applications.

Manufacturer Resources

Product Specs

Product Details:
Fuse
Application:
semiconductor protection
Utilization Category:
aR (accompanied semiconductor protection)
Product Type:
Fuse
Interrupt Rating:
100 kAIC
Product Group:
Fuses
Voltage Type:
AC
Voltage Rating:
1250V
Product Subgroup:
Other Fuses
Insulated Metal Gripping Lugs Imgl:
No
Class:
Class aR
Packaging Type:
Standard
Fuse Indicator:
Top fuse status indicator
Fuse Shape:
Square body, slotted center bolted tags
Mounting Method:
DIN 43 620
Compliances:
CE Marked
Department:
Electrical

Bussmann 170M4188 – Frequently Asked Questions

1) Will the Bussmann 170M-418 mount in my existing square body fuse holder?
It is built to the DIN 43 620 dimensional standard with a square body and slotted center bolted tags, so it lands on any holder or busbar prepped to that standard. Bolted tags means you are torquing it down to bar, not clipping it in, so confirm your mounting surface is drilled for the tag slots rather than a clip-in ferrule base.
2) Can I use a Class aR semiconductor fuse like the Bussmann 170M-418 as the only overcurrent protection on a circuit?
No. Utilization Category aR means accompanied semiconductor protection, so the fuse is built to clear short circuits fast enough to save the diodes, IGBTs or SCRs, but it relies on a separate device upstream for overload protection. Pair it with the breaker or general-purpose fuse the panel design calls for. If you need one device handling both overload and short circuit, an aR fuse is the wrong choice.
3) What voltage is the Bussmann 170M-418 rated for, and can I use it on a 690V AC drive?
Rated 1250V AC under IEC and 1300V under UL. That is well above a 690V drive bus, so voltage headroom is not the limiting factor. Just remember the rating is AC only, so do not apply it to a DC link or DC battery circuit on the strength of the AC number.
4) Does the Bussmann 170M-418 fuse have insulated metal gripping lugs?
No, the 170M-418 is supplied without insulated metal gripping lugs (IMGL). The tags are bare slotted center bolted tags. If your installation needs the insulated grip version for touch-safety or clearance reasons, that is a different part and you should not substitute this one for it.
5) How do I tell if a Bussmann 170M square body fuse has blown without pulling it out?
There is a fuse status indicator on the top of the body. On a walkdown you read it visually with the fuse still bolted in place, which is why these get specified in drive cabinets where dropping the bus to test fuses is expensive. It also means you should orient the mounting so the top face stays visible through the cabinet door or panel opening.
6) What circuits are Bussmann 170M-418 high-speed fuses actually used in?
Semiconductor protection work: variable frequency drives and motor drive circuits, rectifier and converter sections, and industrial power distribution where a sensitive semiconductor load needs the fault cleared before the device fails. If the load is straight motor, lighting or resistive heating, a standard branch-circuit fuse class is the appropriate choice instead.
7) Do Bussmann 170M-418 fuses ship individually or in a bulk pack?
Packaging is listed as Standard for the 170M-418, meaning the fuse comes in Bussmann's normal commercial pack rather than a special bulk or kitted configuration.
How fast can I get the Bussmann 170M4188 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 170M4188 come with a warranty?
Absolutely. The Bussmann 170M4188 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 170M4188?
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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