Bussmann 170M-633 High Speed S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,630.10
Bussmann 170M-633 High Speed Square Body Fuse, Class aR, 1400A

Bussmann 170M-633 High Speed Square Body Fuse, Class aR, 1400A

(No reviews yet) Write a Review

Model: 170M6467

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

$2,630.10
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Bussmann 170M-633 High Speed Square Body Fuse, Class aR, 1400A

The Bussmann 170M-633 is an Eaton Bussmann series high speed square body fuse engineered for semiconductor protection in demanding power electronics applications. Rated 1250V (IEC) and 1300V (UL), this Class aR fuse delivers a 1400A current rating with a 200kAIC interrupting capacity, making it suitable for accompanied semiconductor protection duty in busbar-mounted and stack-mounted power electronics assemblies. Built with a square body design and flush end contacts, the fuse mounts cleanly into semiconductor stacks where a low-profile, high-speed current-limiting fuse is required to protect sensitive rectifiers, SCRs, and diodes from fault currents.

Key Features

  • High Speed Design: Class aR utilization category provides accompanied semiconductor protection for fast, current-limiting fault clearing.
  • Square Body, Flush End Contacts: Compact square body construction with flush end contacts for direct busbar and semiconductor stack mounting.
  • Dual Voltage Rating: Rated 1250V (IEC) and 1300V (UL) for use across international and North American electrical systems.
  • High Current Rating: 1400A current rating supports high-capacity semiconductor protection circuits.
  • 200kAIC Interrupting Rating: High interrupting capacity delivers reliable short-circuit protection in demanding power electronics duty.
  • Semiconductor Protection Application: Purpose-built to protect power semiconductors such as SCRs, diodes, and rectifiers from overcurrent.
  • AC Voltage Type: Designed for AC voltage systems per manufacturer specification.

Certifications & Compliance

  • CE Marked

Technical Specifications

  • Voltage Type: AC
  • Utilization Category: aR (accompanied semiconductor protection)
  • Fuse Shape: Square body, flush end contacts
  • Application: semiconductor protection
  • Insulated Metal Gripping Lugs Imgl: No
  • Compliances: CE Marked

Typical Applications

  • Power Semiconductor and SCR Protection
  • Rectifier and Converter Circuits
  • Industrial Motor Drive Protection
  • High-Speed Current-Limiting Fault Protection
  • Power Electronics and Busbar Assemblies
  • Semiconductor Stack Mounting Applications

Why Bussmann?

Eaton's Bussmann series high speed fuses are engineered specifically for the demanding current-limiting and interrupting requirements of semiconductor protection, combining a 200kAIC interrupting rating with Class aR utilization for accompanied protection duty. The square body, flush end contact design and CE marked compliance support reliable, code-conscious performance for professional power electronics and industrial installations relying on Eaton Bussmann semiconductor fuse technology.

Manufacturer Resources

Product Specs

Product Group:
Fuses
Class:
Class aR
Voltage Type:
AC
Utilization Category:
aR (accompanied semiconductor protection)
Product Type:
Fuse
Fuse Shape:
Square body, flush end contacts
Product Details:
Fuse
Application:
semiconductor protection
Insulated Metal Gripping Lugs Imgl:
No
Product Subgroup:
Other Fuses
Mounting Method:
Flush
Compliances:
CE Marked
Department:
Electrical
Fuse Indicator:
Other

Bussmann 170M6467 – Frequently Asked Questions

1) Is the Bussmann 170M-633 fuse right for protecting SCRs and diodes, or do I need a standard industrial fuse?
This is a high speed semiconductor fuse, not a general purpose branch circuit fuse. Its utilization category is aR, meaning accompanied semiconductor protection: it clears short circuits fast enough to save power semiconductors, but it is not intended to carry overload protection on its own. That is why it gets paired with an overload device (thermal relay, breaker, or drive electronics). Application is listed outright as semiconductor protection, for SCRs, diodes, and rectifiers in converter and drive circuits. If you need overload plus short circuit protection from one part, an aR fuse is the wrong choice.
2) What amp ratings does the Bussmann 170M square body fuse come in?
Eight amp ratings are offered: 315A (170M6338), 350A (170M6339), 400A (170M6340), 500A (170M6342), 1400A (170M6467), 1500A (170M6468), 1600A (170M6469), and 1800A (170M6470). Order by the part number that matches your rating, since the amp value is what changes between them.
3) How does the Bussmann 170M-633 fuse mount into a semiconductor stack?
Flush mounting. The body is square with flush end contacts, so it bolts directly between busbars or into a semiconductor stack without a fuse holder or blade clips. Plan for bolted busbar connections and enough clear space around the body; there are no insulated metal gripping lugs on this version, so the terminations are bare flush contacts.
4) What voltage is the Bussmann 170M-633 semiconductor fuse rated for, and can I use it on DC?
It is rated 1250V per IEC and 1300V per UL, and the voltage type is AC. Treat it as an AC device for your application; DC duty on high speed fuses derates differently and is not part of this rating.
5) Can I substitute a 1600A 170M fuse for a 1400A one if that is what I have on the shelf?
No. On semiconductor protection the fuse is sized to the I2t withstand of the SCR or diode it protects, so going up from 170M6467 at 1400A to 170M6469 at 1600A raises the let-through energy and can leave the device unprotected. Replace like for like with the exact amp rating specified on the stack drawing.
6) Does the Bussmann 170M-633 come with insulated gripping lugs (IMGL)?
No. This configuration is the plain flush end contact version, with IMGL listed as No. If your assembly requires the insulated metal gripping lug style for touch safety or a particular stack layout, you need the IMGL variant of the 170M line instead, not this one.
7) Is the Bussmann 170M high speed fuse CE marked for a European machine build?
Yes, it is CE marked, and the primary voltage rating is given to IEC at 1250V, which is what an OEM exporting machinery typically needs to show. The UL side of the rating is 1300V.
8) Does the Bussmann 170M-633 fuse have a blown fuse indicator or microswitch?
The indicator type is listed as Other, not a standard striker or microswitch option. If your panel relies on a striker pin to trip an auxiliary microswitch and signal a blown fuse to the control system, verify the indicator arrangement against the stack drawing rather than assuming this one drives a switch.
How fast can I get the Bussmann 170M6467 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 170M6467 come with a warranty?
Absolutely. The Bussmann 170M6467 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 170M6467?
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 170M6467 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!