Bussmann 170M6207 High-Speed S...
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Bussmann 170M6207 High-Speed Square Body Fuse, Class aR, 900A

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Model: 170M6207

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

$1,201.35
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Bussmann 170M6207 High-Speed Square Body Fuse, Class aR, 900A

The Bussmann 170M6207 is an Eaton Bussmann series high-speed square body fuse engineered for semiconductor protection in demanding industrial power electronics. Rated 900A with a voltage rating of 1250V (IEC) and 1300V (UL), plus a nominal voltage rating of 690V AC, this Class aR fuse is designed to accompany semiconductor devices, providing coordinated overcurrent protection. Its square body design with special bladed contacts allows for direct, low-impedance connection in high-current circuits.

Key Features

  • Amperage Rating: 900A high-speed rating supports demanding semiconductor protection applications.
  • Voltage Rating: 1250V (IEC), 1300V (UL), and 690V AC nominal rating for use across international and domestic systems.
  • Utilization Category: Class aR (accompanied semiconductor protection) for coordinated fault clearing alongside other protective devices.
  • Fuse Shape: Square body with special bladed contacts for secure, low-resistance mounting.
  • Application: Purpose-built for semiconductor protection in power electronics equipment.
  • Dimensions: 76 mm height x 168 mm length/depth x 95 mm width for accurate enclosure and panel fit.
  • Insulated Metal Gripping Lugs (IMGL): Not equipped (No).
  • Packaging: Standard packaging type.

Technical Specifications

  • Amperage Rating: 900 A
  • Application: semiconductor protection
  • Compliances: Contact factory
  • Fuse Shape: Square body, special bladed contacts
  • Insulated Metal Gripping Lugs (IMGL): No
  • Packaging Type: Standard
  • Product Height: 76 mm
  • Product Length Depth: 168 mm
  • Product Weight: 1236 g
  • Product Width: 95 mm
  • Utilization Category: aR (accompanied semiconductor protection)
  • Voltage Rating: 690 V
  • Voltage Type: AC

Typical Applications

  • Semiconductor Device Protection
  • Power Electronics and Converter Circuits
  • Industrial Motor Drive Protection
  • Coordinated Protection with Other Semiconductor Fuses
  • High-Speed Fault Current Limiting

Why Bussmann?

The Eaton Bussmann series 170M6207 delivers the high-speed, precision fault clearing that semiconductor protection demands. Its square body construction with special bladed contacts and Class aR utilization category reflect purpose-built engineering for accompanied semiconductor protection in industrial power electronics. Choose Bussmann for dependable, code-aware protection built to Eaton Bussmann series standards.

Manufacturer Resources

Product Specs

Amperage Rating:
900 A
Application:
semiconductor protection
Class:
Class aR
Compliances:
Contact factory
Fuse Indicator:
Other
Fuse Shape:
Square body, special bladed contacts
Insulated Metal Gripping Lugs Imgl:
No
Packaging Type:
Standard
Product Height:
76 mm
Product Length Depth:
168 mm
Product Weight:
1236 g
Product Width:
95 mm
Utilization Category:
aR (accompanied semiconductor protection)
Voltage Rating:
690 V
Voltage Type:
AC
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Details:
Fuse

Bussmann 170M6207 – Frequently Asked Questions

1) Will the Bussmann 170M6207 fit my existing square body fuse holder or busbar spacing?
Check the body envelope before you commit. The 170M6207 measures 76 mm height, 168 mm length/depth and 95 mm width, and it mounts by special bladed contacts rather than ferrules or blade clips. Those blades bolt straight to busbar or to a matching square body base, so the hole pattern and centre spacing on your existing mount have to match the blade drilling, not just the overall size. At 1236 g it is a heavy part, so the mounting must carry the mass as well as the current.
2) What does Class aR mean, and can I use the 170M6207 as the only overcurrent device in the circuit?
No, not on its own. aR stands for accompanied semiconductor protection, which means the 170M6207 clears short circuits only and must work alongside another device, typically a breaker or overload relay, that handles overload currents. If you need a fuse that covers the full range from overload through short circuit, you want a gR or gS type instead. Specifying an aR fuse where a full-range device was intended leaves the low-level overload band uncovered.
3) Is a 900A Bussmann 170M6207 suitable for a 690V AC drive input?
Yes. The 170M6207 carries a 900 A rating with a 690 V AC nominal voltage rating, which is the standard European industrial drive supply level. It is built for semiconductor protection, so it is the right family for rectifier and inverter bridge protection on a drive of that size. Size the amp rating against the converter's RMS line current and duty cycle, not just the drive nameplate.
4) Can I use a regular Class J or Class T fuse instead of the 170M6207 for protecting IGBTs or diodes?
No. Standard industrial fuse classes clear far too slowly to save a semiconductor junction. The 170M6207 is a high-speed square body fuse with the aR utilization category, built specifically to accompany semiconductor devices and limit let-through energy fast enough to protect them. Swapping in a general-purpose branch circuit fuse of the same amp rating will protect the cable and leave the silicon exposed.
5) Does the Bussmann 170M6207 come with insulated metal gripping lugs?
It does not. The 170M6207 is supplied without IMGL, so the blade contacts are bare and bolt directly to your busbar or base. If your panel design relied on the insulated gripping lug version for clearance or touch protection, you need to account for that separately or select a different variant of the 170M body style.
6) Does the 170M6207 have a microswitch or blown fuse indicator?
The indicator type on the 170M6207 is listed as Other, meaning it is not one of the standard indicator or microswitch configurations. If your control scheme depends on a striker pin or a microswitch contact to trip the drive on fuse operation, confirm the indicator arrangement suits that wiring before you build it into the sequence.
7) How is the Bussmann 170M6207 packaged for MRO stocking?
Standard packaging, one fuse per part number 170M6207, weighing 1236 g each. For a maintenance crib holding spares for a drive line, that is a single-piece item you can shelf-stock rather than a multi-pack, so stocking levels map one to one with the number of fuse positions you need to cover.
How fast can I get the Bussmann 170M6207 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 170M6207 come with a warranty?
Absolutely. The Bussmann 170M6207 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 170M6207?
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 170M6207 from ZenSupply?
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