Bussmann 170M Eaton Series Cla...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,018.95
Bussmann 170M Eaton Series Class aR High-Speed Square Body Fuse, 1000A

Bussmann 170M Eaton Series Class aR High-Speed Square Body Fuse, 1000A

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Model: 170M4309

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

$1,018.95
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Bussmann 170M Eaton Series Class aR High-Speed Square Body Fuse, 1000A

The Bussmann Eaton series Class aR high-speed square body fuse delivers current-limiting overcurrent protection for demanding industrial power circuits. Rated 1000A with a 200kAIC interrupt rating, this fuse is manufactured to IEC and UL requirements and is offered across a family of voltage ratings from 200V to 1250V, including 200V, 550V, 600V, 660V, 900V, 1000V, 1100V, and 1250V options, to match a wide range of system voltages. Blade end x blade end terminals and a flush square body profile support compact, space-efficient panel mounting, while the top status indicator gives installers a quick visual check of fuse condition.

Key Features

  • Amperage Rating: 1000A high-speed rating delivers fast current-limiting response to protect sensitive downstream components.
  • Interrupt Rating: 200kAIC interrupting capacity supports reliable performance in high-fault-current industrial systems.
  • Voltage Rating: Available in 200V, 550V, 600V, 660V, 900V, 1000V, 1100V, and 1250V ratings (IEC) to fit a broad range of system designs.
  • Fuse Class: Class aR construction per IEC delivers semiconductor-grade, high-speed current-limiting protection characteristics.
  • Terminal Configuration: Blade end x blade end terminals provide secure, space-saving connections.
  • Body Style: Square body with a flush profile for compact panel and enclosure fitment.
  • Status Indicator: Top-mounted status indicator provides fast visual confirmation of fuse condition.

Certifications & Compliance

  • IEC Rated
  • UL Listed

Technical Specifications

  • Packaging Type: Standard

Typical Applications

  • Industrial Power Distribution Systems
  • Motor Drive and Power Electronics Protection
  • Semiconductor Circuit Protection
  • Commercial and Industrial Electrical Panels

Why Bussmann?

Eaton Bussmann series fuses are engineered to Class aR IEC standards and UL requirements, combining high-speed current-limiting performance with 200kAIC interrupt capacity for demanding industrial and power electronics circuits. The blade end x blade end terminal design and top status indicator support fast, reliable installation and maintenance across the full 200V-1250V voltage family. Choose Bussmann for code-compliant, professional-grade overcurrent protection.

Manufacturer Resources

Product Specs

Packaging Type:
Standard
Department:
Electrical
Class:
Class aR
Product Type:
Fuse
Amperage Rating:
1000A
Voltage Rating:
200V - 1250V
Listing:
UL Listed
Standards:
IEC
Product Group:
Fuses
Product Subgroup:
Other Fuses

Bussmann 170M4309 – Frequently Asked Questions

1) Which Bussmann 170M part number do I order for a 1000A fuse at my system voltage?
The 170M 1000A high-speed square body fuse is built as a separate part number per voltage rating: 200V is 170M6393, 550V is 170M6671, 600V is 170M6520, 660V is 170M7044, 900V is 170M4668, 1000V is 170M4309, 1100V is 170M5362, and 1250V is 170M6764. The amp rating is 1000A across all of them, so the only thing you are picking is the voltage. Order the rating at or above your system voltage, not below it.
2) Is a Class aR fuse the right choice for protecting a VFD or rectifier, or do I need a Class gR/gS?
Class aR is a partial-range semiconductor fuse: it protects against short circuits only, not against sustained low-level overloads. That is what the 170M 1000A is, and it is the usual pick when the drive or rectifier already provides its own overload protection electronically. If you need one device to cover both overload and short circuit on that circuit, an aR fuse will not do it by itself.
3) Does this Bussmann 170M fuse bolt in, or does it use blade terminals?
Blade end by blade end. The 170M 1000A has a blade terminal on each end and a flush square body, so it drops into a matching square body fuse holder or blade-style clips rather than bolting flat to a bus. Check that your existing holder is the blade type and the same body size before ordering.
4) Will a 200kAIC fuse handle the available fault current on a large industrial service?
The 170M 1000A carries a 200kAIC interrupting rating, which covers most industrial switchgear and drive panels where available fault current runs well above what standard branch fuses can clear. Confirm the AIC against your short-circuit study, but 200kA is the top tier commonly specified for this kind of power electronics protection.
5) Is this fuse acceptable on a job that requires UL-listed overcurrent protection?
The Bussmann 170M 1000A is UL Listed and built to IEC standards, so it satisfies specs calling for listed overcurrent protection on industrial power and semiconductor circuits. The Class aR designation itself is an IEC classification, not a UL fuse class, so if your drawing calls out a UL class such as J or T, this is not a substitute for it.
6) Can I use the 1000V version of this 170M fuse on a 600V panel to standardize my spare stock?
Electrically, a higher voltage rating is acceptable on a lower voltage circuit, so a 1000V 170M (170M4309) will operate on a 600V system. The catch is physical: 170M fuses in different voltage ratings are different body sizes and centers, so the higher-voltage part frequently will not fit the holder sized for the 600V version (170M6520). Standardize on spares only where the holder and body size match.
7) Can I tell if this fuse has blown without pulling it out of the holder?
Yes. The 170M 1000A square body fuse has a top-mounted status indicator, so an electrician can see fuse condition at a glance with the panel open, no removal or metering needed. That matters on multi-fuse drive cabinets where finding the opened leg otherwise means testing each one.
8) What does this 170M fuse come packaged as?
Standard packaging, sold as the individual 1000A fuse. There is no kit, holder, or mounting hardware included, so if you are building a new panel you will need the matching square body fuse holder or blade clips separately.
How fast can I get the Bussmann 170M4309 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 170M4309 come with a warranty?
Absolutely. The Bussmann 170M4309 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 170M4309?
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 170M4309 from ZenSupply?
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