Bussmann 170M-560 High-Speed S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,836.10
Bussmann 170M-560 High-Speed Square Body Fuse, Class aR

Bussmann 170M-560 High-Speed Square Body Fuse, Class aR

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Model: 170M5618

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

$1,836.10
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Bussmann 170M-560 High-Speed Square Body Fuse, Class aR

The Bussmann 170M-560 is an Eaton Bussmann series high-speed square body fuse engineered for semiconductor protection in AC power circuits. Rated 700V (UL) and 690V (IEC) with a 200 kAIC interrupt rating, this Class aR fuse is built for accompanied semiconductor protection and is available in amperage ratings from 400A to 1250A to fit a range of power electronics applications. The square body design features center bolted tags with blade end X blade end terminals for straightforward installation, and the fuse carries CE marking for compliance across international electrical standards.

Key Features

  • Amp Rating Range: Available from 400A to 1250A to match the semiconductor protection needs of a range of power electronics assemblies.
  • Dual Voltage Rating: Rated 700V under UL and 690V under IEC standards for use across both North American and international electrical systems.
  • High Interrupt Rating: 200 kAIC interrupt rating supports reliable high-speed clearing under fault conditions.
  • Class aR Utilization Category: Designed for accompanied semiconductor protection, working alongside other overcurrent devices to safeguard sensitive power electronics.
  • Square Body Construction: Square body shape with center bolted tags for secure, low-resistance connections.
  • Blade End Terminals: Blade end X blade end terminal configuration on both ends simplifies mounting into fuse blocks and disconnects.
  • AC Voltage Type: Rated for AC power circuits.
  • Standard Packaging: Supplied in standard packaging for straightforward stocking and distribution.

Certifications & Compliance

  • UL Rated (UL)
  • IEC Rated (IEC)
  • CE Marked

Technical Specifications

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

Typical Applications

  • Semiconductor Protection Circuits
  • AC Power Circuits and Distribution Systems
  • Industrial Power Electronics Protection
  • High-Speed Interruption Applications Requiring Class aR Protection

Why Bussmann?

Bussmann by Eaton engineers this high-speed square body fuse with dual UL and IEC voltage ratings, a 200 kAIC interrupt rating, and CE marking to deliver dependable protection for demanding semiconductor and power electronics applications. The Class aR construction and center-bolted, blade end X blade end terminal design provide the secure connections and code-compliant performance professionals rely on for critical power protection circuits.

Manufacturer Resources

Product Specs

Product Group:
Fuses
Class:
Class aR
Voltage Type:
AC
Utilization Category:
aR (accompanied semiconductor protection)
Packaging Type:
Standard
Connection:
Blade end x blade end
Product Type:
Fuse
Interrupt Rating:
200 kAIC
Fuse Shape:
Square body, center bolted tags
Product Details:
Fuse
Application:
semiconductor protection
Insulated Metal Gripping Lugs Imgl:
No
Product Subgroup:
Other Fuses
Compliances:
CE Marked
Department:
Electrical
Series:
170M
Voltage Rating:
700V (UL) / 690V (IEC)
Amperage Rating:
400A - 1250A
Listing:
UL Listed
Standards:
CE Marked
Grade:
Class aR
Connection Type:
Blade Terminal (Both Ends)

Bussmann 170M5618 – Frequently Asked Questions

1) Can a Bussmann 170M-560 aR fuse be used as the only overcurrent protection on a drive circuit?
No. The 170M-560 is a Class aR fuse, an accompanied semiconductor protection device. aR means it clears short circuits only and has to work alongside another overcurrent device that handles overload protection, typically the drive's own electronic overload or an upstream breaker. If you need a fuse that covers both overload and short circuit on its own, you want a gR/gS type rather than aR.
2) What voltage can I run a Bussmann 170M-560 square body fuse at on a 600V AC system?
It covers it. The 170M-560 is rated 700V under UL and 690V under IEC, AC only, so a 600V AC industrial system sits inside both ratings. Note the AC rating does not carry over to DC service; if your application is a DC bus, this is not the right catalog number.
3) Which amp ratings does the Bussmann 170M-560 come in, and what are the part numbers?
The 170M-560 body size spans 400A through 1250A. The orderable catalog numbers are 170M5608 at 400A, 170M5609 at 450A, and 170M5618 at 1250A. Amp rating is the only thing that changes between them, so specify it on the purchase order or you will get the wrong element.
4) How does the Bussmann 170M-560 mount into a fuse holder or busbar?
It is a square body fuse with center bolted tags, blade end to blade end on both sides. That means it bolts down through the tags into a fuse block, disconnect, or directly to busbar, rather than clipping in. You supply the bolts and hardware to suit your block. Blade centers must match your existing base, so confirm the mounting pattern before you order.
5) Does the Bussmann 170M-560 have insulated metal gripping lugs for safe removal?
No, the 170M-560 is supplied without IMGL insulated gripping lugs. If your maintenance procedure calls for pulling fuses by insulated lugs, you need a different 170M variant that carries the IMGL option. Otherwise the fuse is removed by unbolting the tags with the circuit de-energized and locked out.
6) Will the Bussmann 170M-560 satisfy a spec calling for both UL and European compliance?
It does. The 170M-560 is UL Listed and carries CE marking, with voltage published to both the UL (700V) and IEC (690V) standard. That makes it usable on equipment built in North America and on machinery exported to or built for European installation without swapping the fuse line.
7) What is a high-speed semiconductor fuse protecting that a regular Class J or Class T fuse will not?
High-speed fuses like the Bussmann 170M series are built for semiconductor protection: SCRs, diodes, IGBT rectifier sections, and drive front ends. They clear far faster and let through much less I2t energy than a general-purpose branch circuit fuse, which is what keeps the silicon from failing before the fuse does. A Class J or T fuse protects conductors and general equipment but will not save a thyristor. Use the 170M where a drive or converter manufacturer specifies semiconductor fusing.
8) Can I replace a failed 400A semiconductor fuse with the 450A version to get more headroom?
Not without checking the drive documentation. On semiconductor fusing the amp rating is chosen against the I2t withstand of the device being protected, not just the load current, so going from the 170M5608 at 400A to the 170M5609 at 450A raises let-through energy and can leave the semiconductor unprotected. Replace like for like unless the equipment manufacturer lists the larger rating.
9) How does the Bussmann 170M-560 ship for stocking in a distribution warehouse?
Standard packaging, single fuse per catalog number, with each amp rating carrying its own number (for example 170M5618 for the 1250A). There is no multi-pack or bulk carton configuration on this body size, so stock each rating you support separately.
How fast can I get the Bussmann 170M5618 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 170M5618 come with a warranty?
Absolutely. The Bussmann 170M5618 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 170M5618?
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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