Bussmann 170M2018 Eaton Series...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$11,188.13
Bussmann 170M2018 Eaton Series High-Speed Traction Fuse, Class gR, 750V/1250A

Bussmann 170M2018 Eaton Series High-Speed Traction Fuse, Class gR, 750V/1250A

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Model: 170M2018

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

$11,188.13
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Bussmann 170M2018 Eaton Series High-Speed Traction Fuse, Class gR, 750V/1250A

The Bussmann 170M2018 is an Eaton series high-speed traction fuse engineered as a Parallel Fuse Link for demanding rail and traction power distribution systems. Rated 750V DC and 1250A with a 110 kAIC interrupt rating, this Class gR fuse delivers general purpose semiconductor protection for traction and third-rail applications. Its square body with parallel bolted tags is built for secure, high-current connections in rolling stock and traction electrical systems, where reliable overcurrent protection is critical to safe, continuous operation.

Key Features

  • Electrical Rating: 750V DC and 1250A rating delivers robust overcurrent protection for high-power traction circuits.
  • Interrupt Rating: 110 kAIC interrupting capacity safely clears high fault currents in demanding traction power systems.
  • Utilization Category: Class gR (general purpose semiconductor protection) safeguards semiconductor devices from damaging overcurrent conditions.
  • Configuration: Parallel Fuse Link design with a square body and parallel bolted tags for secure, high-current terminal connections.
  • Application-Specific Design: Purpose-built for traction and third-rail electrification systems where dependable protection is essential.
  • Rated Switching Capacity: 110A rated switching capacity supports controlled, predictable circuit interruption.
  • Voltage Type: DC-rated construction suited to direct current traction power distribution networks.
  • Packaging: Standard packaging type for straightforward handling and stocking.

Technical Specifications

  • Amperage Rating: 1250 A
  • Application: traction | third rail
  • Certifications: Not Applicable
  • Compliances: Contact Manufacturer
  • Fuse Shape: Square body, parallel bolted tags
  • Packaging Type: Standard
  • Product Height: 150 mm
  • Product Length Depth: 250 mm
  • Product Weight: 4592 g
  • Product Width: 180 mm
  • Rated Switching Capacity: 110 A
  • Utilization Category: gR (general purpose semiconductor protection)
  • Voltage Rating: 750 V
  • Voltage Type: DC

Typical Applications

  • Traction Power Distribution Systems
  • Third-Rail Electrification Systems
  • Rail Transit and Rolling Stock Electrical Systems
  • Semiconductor Overcurrent Protection Circuits
  • High-Power DC Traction Motor Circuits

Why Bussmann?

Bussmann by Eaton engineers the 170M2018 high-speed traction fuse to meet the demanding overcurrent protection needs of traction and third-rail power systems. With a 750V DC, 1250A rating and a 110 kAIC interrupt rating, its Class gR design delivers dependable general purpose semiconductor protection for high-power traction applications. Choose Bussmann for reliable, purpose-built fuse protection engineered for rail and traction electrical systems.

Manufacturer Resources

Product Specs

Amperage Rating:
1250 A
Application:
traction | third rail
Certifications:
Not Applicable
Class:
Class gR
Compliances:
Contact Manufacturer
Fuse Indicator:
Other
Fuse Shape:
Square body, parallel bolted tags
Interrupt Rating:
110 kAIC
Packaging Type:
Standard
Product Height:
150 mm
Product Length Depth:
250 mm
Product Weight:
4592 g
Product Width:
180 mm
Rated Switching Capacity:
110 A
Special Features:
Parallel Fuse Link
Utilization Category:
gR (general purpose semiconductor protection)
Voltage Rating:
750 V
Voltage Type:
DC
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Details:
Fuse

Bussmann 170M2018 – Frequently Asked Questions

1) Can the Bussmann 170M2018 fuse be used on a 750V DC traction circuit?
That is exactly what the 170M2018 is rated for: 750 V, DC voltage type, with a 1250 A current rating. It is built for traction and third-rail power distribution, so a DC traction bus at or below 750 V is within rating. It is not an AC-rated part, so do not apply it to an AC feeder.
2) What fault current can the Bussmann 170M2018 interrupt?
110 kAIC. On a third-rail or substation DC bus with high available fault current, that interrupting rating is the number your short-circuit study has to come in under. The fuse also carries a rated switching capacity of 110 A.
3) What does Class gR mean on a high-speed traction fuse, and will it protect my rectifier diodes?
gR is the general purpose semiconductor protection utilization category: it clears both overloads and short circuits, unlike an aR fuse which is back-up only and protects against short circuit alone. The 170M2018 is a gR device, so it can sit as the sole protection on a semiconductor circuit such as a rectifier or traction converter stack rather than needing a separate overload device.
4) How does the Bussmann 170M2018 mount, and what terminal connection does it use?
It is a square body fuse with parallel bolted tags, so it lands on bolted busbar or cable lugs rather than dropping into a clip or a fuseholder. The tags are the mounting, which is why it suits high-current traction connections. Plan for bolted bus stabs and torqued hardware at both ends.
5) Is this the right fuse for general branch circuit or panelboard protection?
No. The 170M2018 is a high-speed semiconductor fuse for traction and third-rail DC systems, rated 750 V DC at 1250 A. For ordinary AC feeder, branch or panelboard duty you want a standard Class J, RK5 or L fuse instead; a gR high-speed link is a different let-through characteristic and a different mounting.
6) How do I confirm I am ordering the exact Bussmann traction fuse I need?
Order by the manufacturer part number 170M2018 from Bussmann by Eaton. The 170M series runs a long list of body sizes and ampere ratings that look alike, so match the number rather than the description: this one is the 750 V DC, 1250 A, Class gR square body version.
7) What is a Parallel Fuse Link on the Bussmann 170M2018?
The 170M2018 uses parallel fuse links internally, which is how a single square body reaches a 1250 A rating while still clearing fast enough for semiconductor duty. Practically it means you buy one fuse for the leg rather than paralleling several smaller fuses yourself, which is what keeps the current sharing predictable.
8) Does the Bussmann 170M2018 have a blown fuse indicator for a microswitch trip?
The indicator on the 170M2018 is listed as Other, meaning it is not one of the standard striker or visual indicator options catalogued for the series. If your switchgear relies on a striker pin to drive a microswitch or an alarm contact, verify the indicator style against the Bussmann datasheet for this part number before you commit the design.
How fast can I get the Bussmann 170M2018 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 170M2018 come with a warranty?
Absolutely. The Bussmann 170M2018 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 170M2018?
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 170M2018 from ZenSupply?
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