Bussmann 170M-614 High-Speed S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3,132.96
Bussmann 170M-614 High-Speed Square Body Fuse, Class aR, 100 kAIC

Bussmann 170M-614 High-Speed Square Body Fuse, Class aR, 100 kAIC

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Model: 170M6148

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

$3,132.96
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Bussmann 170M-614 High-Speed Square Body Fuse, Class aR, 100 kAIC

The Bussmann 170M-614 is an Eaton Bussmann series high-speed square body fuse engineered for demanding semiconductor protection applications. Built to DIN 43620 with a Class aR (accompanied semiconductor protection) utilization category and a 100 kAIC interrupting rating, this fuse family is available in amp ratings from 400A to 1100A (400A, 450A, 500A, 550A, 630A, 700A, 800A, 1000A, and 1100A) to match a wide range of power electronics loads. The square body design features centre-bolted tags (slotted) and a top fuse status indicator, and the fuse is CE marked for compliance in professional electrical installations. Clearing energy is rated at 2,150,000 A²s at 1000V and 2,750,000 A²s at 1250V, with a nominal power loss of 135W, supporting coordinated protection of semiconductor devices in industrial power circuits.

Key Features

  • Amp Rating Range: Available across the family in 400A, 450A, 500A, 550A, 630A, 700A, 800A, 1000A, and 1100A ratings to suit varying semiconductor protection loads.
  • High Interrupting Rating: 100 kAIC breaking capacity delivers reliable protection under high fault-current conditions.
  • Utilization Category: Class aR (accompanied semiconductor protection) per DIN 43620 for use alongside upstream backup protection.
  • Square Body Construction: Square body with centre-bolted tags (slotted) for secure, standardized high-speed fuse mounting.
  • Status Indicator: Top fuse status indicator provides quick visual confirmation of fuse condition.
  • Clearing Performance: Clearing at 1000V rated 2,150,000 A²s and clearing at 1250V rated 2,750,000 A²s, with 135W power loss.
  • Compact Dimensions: Product Width 95 mm, Height 76 mm, and Length/Depth 168 mm for a defined mounting footprint.
  • AC Voltage Type: Rated for AC voltage applications.

Certifications & Compliance

  • CE Marked

Technical Specifications

  • Voltage Type: AC
  • Product Width: 95 mm
  • Utilization Category: aR (accompanied semiconductor protection)
  • Fuse Shape: Square body, slotted center bolted tags
  • Product Height: 76 mm
  • Application: semiconductor protection
  • Insulated Metal Gripping Lugs Imgl: No
  • Compliances: CE Marked
  • Product Length Depth: 168 mm

Typical Applications

  • Semiconductor Device Protection
  • Power Electronics and Drive Circuits
  • Industrial AC Power Distribution and Rectifier Circuits
  • High-Speed Circuit Protection Panels
  • Coordinated Protection with Upstream Backup Fuses

Why Bussmann?

Bussmann fuses from Eaton are engineered to demanding DIN 43620 dimensional and performance standards, giving specifiers a Class aR fuse with a proven 100 kAIC interrupting rating for accompanied semiconductor protection. The square body, centre-bolted tag design and top fuse status indicator support secure installation and fast condition checks, while CE marking confirms compliance for professional electrical and industrial power applications across the 400A-1100A rating range.

Manufacturer Resources

Product Specs

Product Group:
Fuses
Class:
Class aR
Voltage Type:
AC
Product Width:
95 mm
Utilization Category:
aR (accompanied semiconductor protection)
Product Type:
Fuse
Interrupt Rating:
100 kAIC
Fuse Shape:
Square body, slotted center bolted tags
Product Height:
76 mm
Product Details:
Fuse
Application:
semiconductor protection
Insulated Metal Gripping Lugs Imgl:
No
Product Subgroup:
Other Fuses
Mounting Method:
DIN 43 620
Compliances:
CE Marked
Product Length Depth:
168 mm
Department:
Electrical
Fuse Indicator:
Top fuse status indicator
Voltage Rating:
1250V
Configuration:
Square Body, Center-Bolted Tags (Slotted)
Amperage Rating:
400A-1100A
Standards:
CE Marked

Bussmann 170M6148 – Frequently Asked Questions

1) What is the difference between a Class aR fuse and a gR fuse, and can the 170M-614 be my only protection?
aR means accompanied semiconductor protection: the 170M-614 clears short circuits only, so it has to sit behind another device (a breaker or backup fuse) that handles overload current. A gR or gS fuse is full-range and covers both overload and short circuit on its own. If your drive or rectifier circuit has no upstream overload protection, this is the wrong utilization category for that position.
2) What amp ratings does the Bussmann 170M-614 fuse come in, and how do I order the right one?
Nine ratings across the family: 400A (170M6140), 450A (170M6141), 500A (170M6142), 550A (170M6143), 630A (170M6144), 700A (170M6145), 800A (170M6146), 1000A (170M6148) and 1100A (170M6149). Order by the amp rating you need and the part number changes in the last digit. All share the same square body case size.
3) Is the Bussmann 170M-614 rated for my 1000V AC drive circuit?
Voltage rating on the 170M-614 is 1250V AC, so a 1000V AC system is within it. Clearing energy is published both ways: 2,150,000 A2s at 1000V and 2,750,000 A2s at 1250V. Use the 1000V figure when you coordinate against your semiconductor's I2t withstand. It is an AC-rated part.
4) Can I tell if a 170M-614 fuse has blown without pulling it out of the holder?
Yes. There's a top-mounted fuse status indicator, so a maintenance tech can check condition visually from above the bolted fuse without de-bolting the tags or taking the assembly apart. Useful when the fuse sits in a crowded protection panel.
5) What fault current can the Bussmann 170M-614 interrupt?
100 kAIC breaking capacity. That covers most industrial distribution points feeding rectifiers and drives, but check it against your calculated available fault current at the fuse location, not at the service entrance, before you spec it in.
6) Do I need to allow for heat rejection when mounting a 170M-614 in an enclosure?
Yes. Nominal power loss is 135W per fuse, which is real heat inside a sealed cabinet. If you're stacking three of these in a rectifier bridge, that's a meaningful thermal load on the enclosure ventilation calculation.
7) Will a standard Class J or Class T fuse protect my power semiconductors instead?
No. General-purpose branch circuit fuses clear far too slowly to save a diode, thyristor or IGBT module. The 170M-614 is a high-speed fuse made specifically for semiconductor protection, with published clearing I2t values so you can match it under the device's withstand rating. Class J and Class T are for conductor and equipment protection, not silicon.
8) Is the Bussmann 170M-614 acceptable for a European installation?
The 170M-614 is CE marked, and it is dimensionally built to DIN 43620, the European square body standard, so it suits professional electrical and industrial installations specified to those requirements.
How fast can I get the Bussmann 170M6148 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 170M6148 come with a warranty?
Absolutely. The Bussmann 170M6148 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 170M6148?
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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