Bussmann 170M-465 Class aR Squ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$927.00
Bussmann 170M-465 Class aR Square Body Fuse, 1000V

Bussmann 170M-465 Class aR Square Body Fuse, 1000V

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Model: 170M4658

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

$927.00
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Bussmann Class aR Square Body Fuse, 1000V

The Bussmann 170M-465 series is an Eaton Bussmann high-speed square body fuse engineered for accompanied semiconductor protection, available across nine amperage ratings from 200A to 700A. Every rating in the series carries a 1000V (IEC) rating with a 690V AC voltage rating, IEC Rated and CE Marked construction, and Class aR utilization for demanding power electronic applications. The square body design features center bolted tags with blade end x blade end terminals, making it well suited to industrial and commercial electrical systems that require accompanied semiconductor protection.

Key Features

  • Selectable Amp Ratings: Available from 200A through 700A across nine amperage options, allowing the fuse to be matched to the protected semiconductor device.
  • Compact Square Body Construction: Square body fuse shape with center bolted tags; the 200A rating measures 245 mm in length/depth, 142 mm in width, and 62 mm in height for a defined mounting footprint.
  • Blade End x Blade End Terminals: Dual blade-end terminal configuration supports secure, low-resistance connections in high-speed protection circuits.
  • IEC Voltage Rating: Rated 1000V (IEC) with a 690V AC voltage rating for compatibility with IEC-based electrical systems.
  • Class aR Utilization Category: Accompanied semiconductor protection classification, purpose-built for semiconductor device protection applications.
  • High Interrupt Rating: The 200A rating carries a 200 kAIC interrupt rating for reliable fault clearing in high-fault-current systems.
  • Defined I²t Characteristics: The 200A rating has a pre-arc I²t of 1650 and clearing I²t of 11500 at 660V for predictable coordination with semiconductor let-through ratings.
  • Low Watt Losses: The 200A rating is rated at 45W watt losses to help minimize heat generation in the protected circuit.

Certifications & Compliance

  • IEC Rated
  • CE Marked

Technical Specifications

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

Typical Applications

  • Semiconductor Device Protection
  • Accompanied (aR) Overload Protection for Power Semiconductors
  • High-Speed Fault Clearing in Power Electronic Systems
  • Industrial and Commercial IEC-Rated Electrical Systems

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and this Class aR square body fuse series reflects that standard with an IEC Rated, CE Marked design built specifically for accompanied semiconductor protection. With amperage ratings spanning 200A to 700A and defined interrupt, I²t, and voltage characteristics, engineers have the data needed to coordinate reliable, code-compliant protection for demanding power electronic and industrial applications.

Manufacturer Resources

Product Specs

Compliances:
CE Marked
Interrupt Rating:
200 kAIC
Department:
Electrical
Packaging Type:
Standard
Voltage Rating:
1000V
Utilization Category:
aR (accompanied semiconductor protection)
Fuse Indicator:
Other
Fuse Shape:
Square body, center bolted tags
Insulated Metal Gripping Lugs Imgl:
No
Connection:
Blade end x blade end
Product Subgroup:
Other Fuses
Product Group:
Fuses
Voltage Type:
AC
Product Details:
Fuse
Product Type:
Fuse
Class:
Class aR
Configuration:
Square Body, Center Bolted Tags
Amperage Rating:
200A-700A
Listing:
CE Marked
Standards:
IEC

Bussmann 170M4658 – Frequently Asked Questions

1) What amp ratings does the Bussmann 170M-465 square body fuse come in, and what is the part number for each?
Nine ratings from 200A to 700A: 200A is 170M4658, 250A is 170M4659, 315A is 170M4660, 400A is 170M4662, 450A is 170M4663, 500A is 170M4664, 550A is 170M4665, 630A is 170M4666, and 700A is 170M4667. The amp rating is the only thing that changes across the group, so pick the rating that coordinates with the semiconductor you are protecting and order by that number.
2) Is a Class aR fuse the right choice for protecting my IGBT or thyristor drive, or do I need gR?
Class aR is accompanied semiconductor protection, meaning it clears short circuits and backs up another device that handles overload duty. The 170M-465 carries that aR utilization category. If your design has no upstream overload protection and the fuse has to cover both overload and short circuit on its own, aR is not the correct category for that job.
3) Can I use the Bussmann 170M-465 fuse on a 690V AC system?
Yes. The 170M-465 series is rated 1000V under IEC with a 690V AC voltage rating, and it is an AC-rated part. That covers standard 690V industrial drive systems. It is an IEC-standard fuse, so confirm your panel is built to IEC practice rather than UL/NEC branch-circuit rules.
4) How does the 170M-465 fuse mount, and will it fit my existing fuse holder?
It is a square body fuse with center bolted tags and blade end x blade end terminals, so it bolts into a busbar or a bolt-down base rather than clipping into a cylindrical holder. The 200A rating measures 245 mm length/depth, 142 mm width, 62 mm height. It does not come with insulated metal gripping lugs (IMGL), so if your installation needs finger-safe lug covers that is a separate configuration.
5) What I2t data do I need to coordinate this fuse with my semiconductor's let-through rating?
For the 200A rating, pre-arc I2t is 1650 and clearing I2t is 11500 at 660V, with 45W watt losses. Compare the clearing I2t against the I2t withstand of the thyristor or diode you are protecting; the device rating must exceed the fuse clearing value. The watt loss figure matters for enclosure heat rise when several fuses sit in the same cabinet.
6) What is the interrupting capacity of the Bussmann 170M-465 fuse?
The 200A rating carries a 200 kAIC interrupt rating, which covers high available fault current at the drive input of most industrial services. That figure is what lets you use it ahead of a semiconductor stack on a stiff supply.
7) Is the Bussmann 170M-465 fuse CE marked for a European machine build?
Yes, the 170M-465 series is CE marked and built to IEC standards, which is what a machine builder exporting into the EU needs on the documentation package for the protection devices.
8) Can I substitute a standard Class J or Class T fuse for the 170M-465?
No. The 170M-465 is a high-speed square body fuse in the aR utilization category for semiconductor protection, and it clears far faster than a general purpose branch-circuit fuse. Swapping in a Class J or T body will not hold the let-through energy down to what a thyristor or IGBT can survive, and the bolted square body will not fit a Class J or T holder anyway.
9) Does this Bussmann high-speed fuse have a blown fuse indicator or microswitch?
The 170M-465 is listed with an indicator type of Other rather than a standard striker or microswitch option, so do not plan your monitoring circuit around a specific indicator pin on this part. If your panel relies on a microswitch trip signal, verify the indicator style before you wire the alarm contact.
How fast can I get the Bussmann 170M4658 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 170M4658 come with a warranty?
Absolutely. The Bussmann 170M4658 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 170M4658?
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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