Bussmann 170M6614 High-Speed S...
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Bussmann 170M6614 High-Speed Square Body Fuse, 1000A, Class aR

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Model: 170M6614

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

$1,680.89
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Bussmann 170M6614 High-Speed Square Body Fuse, 1000A, Class aR

The Bussmann 170M6614 is an Eaton Bussmann series high-speed square body fuse engineered for semiconductor protection in demanding industrial power circuits. Rated 1000A at 690V AC with a 200 kAIC interrupt rating, this Class aR fuse uses a square body design with center bolted tags and blade end X blade end terminals for secure, low-resistance connections. Its fast-acting characteristics are built to safeguard sensitive semiconductor devices such as SCRs and rectifiers from short-circuit currents, and the fuse carries UL Recognized and CE Marked compliance for professional electrical applications.

Key Features

  • Amperage Rating: 1000A for high-current semiconductor protection circuits.
  • Voltage Rating: 690V AC for use in industrial power distribution systems.
  • Interrupt Rating: 200 kAIC to safely clear high fault currents.
  • Utilization Category: Class aR (accompanied semiconductor protection) for coordinated protection of power semiconductor devices.
  • Fuse Shape: Square body with center bolted tags and blade end X blade end terminals for a secure, low-impedance connection.
  • Clearing I2t: 945000 at 660V for predictable let-through energy during fault clearing.
  • Pre-Arc I2t: 140000 for coordinated protection with upstream and downstream devices.
  • Watt Losses: 122W, a key consideration for enclosure thermal design.

Certifications & Compliance

  • UL Recognized
  • CE Marked

Technical Specifications

  • Amperage Rating: 1000 A
  • Application: semiconductor protection
  • Certifications: UL Recognized
  • Clearing I2t: 945000 at 660 V
  • Compliances: CE Marked
  • Fuse Shape: Square body, center bolted tags
  • Insulated Metal Gripping Lugs (IMGL): No
  • Packaging Type: Standard
  • Pre Arc I2t: 140000
  • Product Height: 76 mm
  • Product Length/Depth: 170 mm
  • Product Weight: 1194 g
  • Product Width: 96 mm
  • Utilization Category: aR (accompanied semiconductor protection)
  • Voltage Rating: 690 V
  • Voltage Type: AC
  • Watt Losses: 122 W

Typical Applications

  • Semiconductor Protection for SCRs and Rectifiers
  • Power Electronics and Variable Frequency Drive Systems
  • Industrial Motor Control and Power Distribution Circuits
  • High-Speed Fault Current Interruption in Panelboards and Switchgear

Why Bussmann?

Bussmann by Eaton engineers its high-speed square body fuses with precise pre-arc and clearing I2t characteristics to deliver dependable, code-compliant protection for sensitive semiconductor equipment. With UL Recognized and CE Marked compliance backing its 1000A, 690V AC, 200 kAIC rating, the 170M6614 is built for professional electrical and industrial power applications where predictable, coordinated fault clearing is essential.

Manufacturer Resources

Product Specs

Amperage Rating:
1000 A
Application:
semiconductor protection
Certifications:
UL Recognized
Class:
Class aR
Clearing I2t:
945000 at 660 V
Compliances:
CE Marked
Connection:
Blade end x blade end
Fuse Shape:
Square body, center bolted tags
Insulated Metal Gripping Lugs Imgl:
No
Interrupt Rating:
200 kAIC
Packaging Type:
Standard
Pre Arc I2t:
140000
Product Height:
76 mm
Product Length Depth:
170 mm
Product Weight:
1194 g
Product Width:
96 mm
Utilization Category:
aR (accompanied semiconductor protection)
Voltage Rating:
690 V
Voltage Type:
AC
Watt Losses:
122 W
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Details:
Fuse

Bussmann 170M6614 – Frequently Asked Questions

1) Can the Bussmann 170M6614 fuse be used for branch circuit or motor overload protection?
No. The 170M6614 is a Class aR high-speed fuse, and aR means accompanied semiconductor protection: it only protects against short circuits and has to be used alongside another device that handles overload. It will not serve as standalone branch circuit or motor overload protection. For overload duty you need a separate overload relay or breaker in the circuit; the 170M6614 is there to clear the fault fast enough to save SCRs and rectifiers.
2) Will a Bussmann 170M6614 work on a 480V or 600V AC drive system?
Yes. The 170M6614 is rated 690V AC, so it covers 480V and 600V AC systems below that ceiling. It is an AC-rated part at 690V, so don't apply it to a DC bus on the strength of this rating. Interrupting capacity is 200 kAIC, which covers most industrial services.
3) How does the 170M6614 square body fuse mount into a fuse holder?
It is a square body fuse with center bolted tags, blade end by blade end, so it bolts down at both ends rather than dropping into clips. You mount it directly to busbar or to a bolt-down base sized for the tag centers. There are no insulated metal gripping lugs on this one, so plan the terminal covers and clearances accordingly.
4) What I2t values do I use to coordinate the 170M6614 with my SCR or rectifier stack?
Pre-arc I2t is 140000 and clearing I2t is 945000 at 660V. Compare the clearing figure against the I2t withstand of the semiconductor you are protecting: the device rating must exceed 945000 for the fuse to save it. The pre-arc number is what you use when checking selectivity against another fuse upstream or downstream.
5) What size enclosure space does the Bussmann 170M6614 fuse need, and how much heat does it put out?
Body size is 170 mm length/depth, 96 mm wide, 76 mm high, and it weighs 1194 g, so the mounting has to carry real weight as well as clear the footprint. Watt loss is 122 W per fuse at rating, which is what drives your enclosure cooling math. Three of these in a drive cabinet is roughly 366 W of heat before anything else in the panel.
6) Is the Bussmann 170M6614 UL Listed?
It is UL Recognized rather than UL Listed, and it is CE Marked. Recognized components are evaluated for use inside a larger assembly, which is how these high-speed semiconductor fuses are normally applied: built into drive cabinets, panelboards and switchgear rather than installed as a standalone listed device.
7) Can I replace a standard Class J or Class T 1000A fuse with a 170M6614?
Not as a straight swap. The 170M6614 is a 1000A square body high-speed fuse with bolted blade ends, a different body and mounting entirely from Class J or Class T, and as a Class aR part it does not provide the overload protection a general purpose branch circuit fuse does. Use it only where the design calls for high-speed semiconductor protection alongside a separate overload device.
8) What is the exact part number to order this 1000A Bussmann high-speed fuse under?
Order it as Bussmann 170M6614. That is the Eaton Bussmann manufacturer part number for the 1000A, 690V AC, 200 kAIC square body aR fuse, and it ships in standard packaging. The 170M prefix family runs a wide range of amp ratings and body sizes, so the full number matters when you place the order.
How fast can I get the Bussmann 170M6614 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 170M6614 come with a warranty?
Absolutely. The Bussmann 170M6614 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 170M6614?
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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