Bussmann 170F High-Speed aR Fu...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3,849.20
Bussmann 170F High-Speed aR Fuse-Link, Size 2, 1200V DC

Bussmann 170F High-Speed aR Fuse-Link, Size 2, 1200V DC

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Model: 170F8231

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

$3,849.20
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Bussmann 170F High-Speed aR Fuse-Link, Size 2, 1200V DC

The Bussmann 170F is a high-speed aR fuse-link built for demanding semiconductor and traction protection applications, rated 1200V DC with a Size 2 form factor measuring 65 x 90 x 165 mm. Manufactured to IEC standards with a square-body design, offset bolted tags, and a built-in indicator, this fuse-link is engineered for accompanied semiconductor protection. This family is available in 200A, 315A, and 420A ratings, giving specifiers a scalable option for high-voltage DC circuit protection.

Key Features

  • Amp Rating Range: Available in 200A, 315A, and 420A ratings to match your DC protection load requirements.
  • Voltage Rating: Rated 1200V DC for high-voltage direct-current circuit protection.
  • Size 2 Form Factor: Square body with offset bolted tags, dimensions 65 x 90 x 165 mm, for standardized mounting.
  • High-Speed aR Class: Classified aR (accompanied semiconductor protection) per IEC standards for fast-acting semiconductor protection.
  • Interrupt Rating: 100 kAIC interrupt rating delivers high fault-current interruption capacity.
  • Fuse Indicator: Built-in indicator provides quick visual confirmation of fuse status.
  • Traction-Duty Application: Suited for traction and other demanding DC power applications.

Certifications & Compliance

  • Manufactured to IEC Standards
  • 100 kAIC Interrupt Rating

Technical Specifications

  • Class: Class aR
  • Voltage Type: DC
  • Utilization Category: aR (accompanied semiconductor protection)
  • Packaging Type: Standard
  • Interrupt Rating: 100 kAIC
  • Fuse Shape: Square body, offset bolted tags
  • Application: traction
  • Insulated Metal Gripping Lugs Imgl: No
  • Fuse Indicator: Other
  • Voltage Rating: 1200V

Typical Applications

  • Traction and Rail Power Systems
  • Semiconductor and Power Electronics Protection
  • High-Voltage DC Power Distribution
  • Industrial DC Drive Systems

Why Bussmann?

Bussmann engineers this high-speed aR fuse-link to IEC standards with a 100 kAIC interrupt rating and a built-in indicator for fast, reliable status checks. For traction and semiconductor protection applications demanding dependable, code-compliant DC circuit protection across the 200A-420A range, Bussmann delivers consistent, high-speed performance.

Manufacturer Resources

Product Specs

Product Group:
Fuses
Class:
Class aR
Voltage Type:
DC
Utilization Category:
aR (accompanied semiconductor protection)
Packaging Type:
Standard
Product Type:
Fuse Link
Interrupt Rating:
100 kAIC
Fuse Shape:
Square body, offset bolted tags
Product Details:
Fuse
Application:
traction
Insulated Metal Gripping Lugs Imgl:
No
Product Weight:
1051 g
Product Subgroup:
Other Fuses
Department:
Electrical
Fuse Indicator:
Other
Voltage Rating:
1200V
Amperage Rating:
200A-420A
Standards:
IEC
Configuration:
Square Body, Offset Bolted Tags

Bussmann 170F8231 – Frequently Asked Questions

1) Will the Bussmann 170F fuse-link protect a 1000V DC drive circuit?
Yes, within rating. The 170F high-speed fuse-link is rated 1200V DC, so it covers DC circuits operating at or below that voltage, including 1000V DC drives. It is a DC-rated device, so don't apply it as a substitute for an AC-rated fuse without checking the AC rating separately.
2) What amp ratings does the Bussmann 170F Size 2 fuse-link come in, and what are the part numbers?
Three ratings: 200A is 170F8231, 315A is 170F8233, and 420A is 170F8235. The amp rating is the only thing that changes across the three, all share the Size 2 square body and the 1200V DC rating, so you can standardize the holder and mounting across all three.
3) Is an aR fuse the right class for protecting semiconductors, or do I need a gR?
Class aR is partial-range, accompanied semiconductor protection, which is what the 170F is. It handles short-circuit faults across the semiconductor but does not protect against low-level overloads, so the circuit needs a separate overload device (drive electronics, thermal overload, or a breaker) working alongside it. If you want a single fuse to cover both overload and short circuit, that is a full-range gR/gS class, not this one.
4) What are the mounting dimensions of the 170F Size 2 body?
The Size 2 square body measures 65 x 90 x 165 mm with offset bolted tags. The offset tag configuration means the blades sit off the body centerline, so confirm your busbar or fuse base is drilled for an offset Size 2 pattern and not a flush-tag body before you order.
5) Can I use a 420A 170F in place of a 315A to reduce the number of spares I stock?
Physically yes, all three ratings share the same Size 2 body and offset bolted tags, so a 170F8235 (420A) bolts into the same base as a 170F8233 (315A). Electrically, no. Oversizing an aR fuse pushes the let-through energy above what the semiconductor it's protecting can survive, which defeats the point of a high-speed fuse. Stock each rating to match the device it guards.
6) Does this Bussmann fuse have a blown-fuse indicator I can wire to a microswitch?
The 170F carries a built-in visual indicator for checking fuse status at a glance. It is a visual indicator only, so if your panel needs remote indication you will need a separate microswitch-equipped variant or an external fuse monitoring relay.
7) Is 100 kA interrupting capacity enough for a traction substation rectifier?
The 170F is rated 100 kAIC, which is the common benchmark for high-speed square-body fuse-links in traction and rectifier duty. The check is your calculated available fault current at the fuse location, if the prospective short-circuit current exceeds 100 kA, this fuse is not applied correctly regardless of amp rating.
8) Does the 170F come with insulated metal gripping lugs for hot swapping?
No. The 170F is supplied without insulated metal gripping lugs (IMGL). It is a bolted-tag fuse, so replacement means de-energizing and unbolting the tags. Budget the outage time accordingly, and if your maintenance procedure depends on gripping lugs you'll need an IMGL-equipped version.
9) Is this Bussmann fuse built to IEC or UL standards?
IEC. The 170F is an IEC square-body high-speed fuse-link, which is why it's sized as a Size 2 body in millimeters rather than to a North American class. For equipment built to IEC drawings or European-sourced drives and rectifier stacks, that's the matching family.
How fast can I get the Bussmann 170F8231 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 170F8231 come with a warranty?
Absolutely. The Bussmann 170F8231 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 170F8231?
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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