Bussmann 170M-345 High Speed S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$739.81
Bussmann 170M-345 High Speed Square Body Fuse, Class aR, 690V AC, 200 kAIC

Bussmann 170M-345 High Speed Square Body Fuse, Class aR, 690V AC, 200 kAIC

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Model: 170M3463

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

$739.81
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Bussmann 170M-345 High Speed Square Body Fuse, Class aR, 690V AC, 200 kAIC

The Bussmann 170M-345 is an Eaton Bussmann series high speed square body fuse engineered for semiconductor protection, available in amp ratings from 50A to 125A to match circuit requirements. This Class aR (accompanied semiconductor protection) fuse features a square body with flush end contacts, a 690V AC voltage rating, and a 200 kAIC interrupting rating for demanding industrial power circuits. CE marked for compliance, it delivers coordinated overcurrent protection in panels and drive systems.

Key Features

  • Amp Rating Range: Available in 50A, 63A, 80A, and 125A ratings to fit a range of semiconductor protection applications.
  • Square Body, Flush End Contacts: Compact square body design with flush end contacts for space-saving panel and busbar mounting.
  • Class aR Utilization: Accompanied semiconductor protection (aR) rating for coordinated protection of semiconductor devices alongside other overcurrent protection.
  • High Interrupting Rating: 200 kAIC interrupting rating supports demanding industrial power distribution circuits.
  • Voltage Rating: 690V AC voltage rating suited for industrial power systems.
  • Clearing Characteristic: Rated clearing value of 3700 at 660V for coordinated semiconductor protection performance.
  • Compact Dimensions: Measures 106 mm wide x 47 mm high x 193 mm long/deep for predictable panel fit.

Certifications & Compliance

  • CE Marked

Technical Specifications

  • Voltage Type: AC
  • Packaging Type: Standard
  • Product Type: High Speed Fuse
  • Insulated Metal Gripping Lugs Imgl: No
  • Amperage Rating: 50A - 125A

Typical Applications

  • Semiconductor Protection
  • Industrial Power Distribution Panels
  • Motor Drive and Rectifier Circuits
  • Coordinated Overcurrent Protection Systems
  • Panelboard and Switchgear Installations

Why Bussmann?

Eaton Bussmann series fuses are engineered for reliable, code-compliant performance in demanding industrial applications. The 170M-345's Class aR utilization, 200 kAIC interrupting rating, and CE marked construction make it a dependable choice for coordinated semiconductor protection across the 50A to 125A range.

Manufacturer Resources

Product Specs

Product Group:
Fuses
Class:
Class aR
Voltage Type:
AC
Product Width:
106 mm
Utilization Category:
aR (accompanied semiconductor protection)
Packaging Type:
Standard
Product Type:
High Speed Fuse
Interrupt Rating:
200 kAIC
Fuse Shape:
Square body, flush end contacts
Product Height:
47 mm
Product Details:
Fuse
Application:
semiconductor protection
Insulated Metal Gripping Lugs Imgl:
No
Product Subgroup:
Other Fuses
Mounting Method:
Flush
Compliances:
CE Marked
Product Length Depth:
193 mm
Department:
Electrical
Fuse Indicator:
Other
Voltage Rating:
690V
Amperage Rating:
50A - 125A
Configuration:
Square Body, Flush End Contacts
Standards:
CE Marked

Bussmann 170M3463 – Frequently Asked Questions

1) What amp ratings can I get the Bussmann 170M high speed square body fuse in?
The 170M square body high speed fuse family here runs from 40A up to 630A: 40A (170M3008), 50A (170M3459), 63A (170M3460), 80A (170M3461), 125A (170M3463), 160A (170M3364), 200A (170M3365), 250A (170M3516), 315A (170M3317), 350A (170M3568), 400A (170M3519) and 630A (170M3773). Order by the amp rating, and the Bussmann part number follows from it.
2) Will a Class aR fuse protect my drive on its own, or do I still need a circuit breaker?
Class aR is accompanied semiconductor protection, so it is a partial-range device. It clears high fault currents fast to save the semiconductor, but it is not intended to cover low-level overloads on its own. You still need an upstream breaker or overload device to handle the low end of the current range. If you want full-range protection from a single device, that is a gR/gS type, not aR.
3) Can I use the Bussmann 170M-345 fuse on a 480V or 600V industrial system?
Yes. It carries a 690V AC rating, so it covers 480V and 600V AC three-phase industrial systems. It is an AC-rated device, so don't apply it to a DC bus at the AC voltage value.
4) Can I swap a standard Class J or RK5 fuse for this 170M high speed fuse?
Not as a like-for-like. Class J and RK5 are branch-circuit fuses on a completely different body and mounting; the 170M is a square body device with flush end contacts and flush mounting, so the holder and busbar prep are different. It also protects differently: aR clears far faster than a standard time-delay fuse and is meant for semiconductors, not general branch circuits. Going the other way, putting a standard fuse where a 170M was, will let a drive's diodes fail before the fuse opens.
5) What are the dimensions of the Bussmann 170M square body fuse for panel layout?
Plan for 106 mm wide, 47 mm high, and 193 mm long/deep. That is the envelope to allow on the busbar or fuse base before you check clearance to the enclosure door.
6) Does this Bussmann 170M fuse have insulated metal gripping lugs?
No. The 170M square body fuse is supplied without insulated metal gripping lugs (IMGL). It uses flush end contacts and mounts flush, meaning it bolts directly to the busbar or fuse holder face. If your installation was built around an IMGL version, the mounting will not be the same.
7) Is this fuse right for protecting IGBTs and rectifier diodes in a motor drive?
That is exactly the application. The 170M is a high speed semiconductor fuse with aR utilization, sized to clear before the let-through energy damages the silicon in rectifier and drive circuits. Match the fuse to the device I2t and the circuit voltage, not just to the load current, when you pick the amp rating.
8) Does the Bussmann 170M fuse meet European compliance requirements for export panels?
It is CE marked, which is what a panel builder shipping into the EU needs on record for the fuse. That is the compliance mark carried on this square body 170M series.
How fast can I get the Bussmann 170M3463 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 170M3463 come with a warranty?
Absolutely. The Bussmann 170M3463 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 170M3463?
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 170M3463 from ZenSupply?
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