Bussmann 170M7082 Class aR Sem...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$5,704.34
Bussmann 170M7082 Class aR Semiconductor Fuse, 1600A 690V

Bussmann 170M7082 Class aR Semiconductor Fuse, 1600A 690V

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Model: 170M7082

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

$5,704.34
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Bussmann 170M7082 Class aR Semiconductor Fuse, 1600A 690V

The Bussmann 170M7082 is a Class aR semiconductor protection fuse rated 1600A at 690V AC, engineered for demanding industrial power circuits. Built to IEC standards and CE marked, this fuse delivers a 200 kAIC interrupt rating for reliable overcurrent protection of semiconductor devices in high-power applications. Its flush mounting design and centre fuse status indicator make installation and status monitoring straightforward in industrial enclosures and panels.

Key Features

  • Amperage & Voltage Rating: Rated 1600A at 690V AC for high-power semiconductor protection circuits.
  • Class aR Utilization Category: Classified aR (accompanied semiconductor protection) per IEC standards for use with backup protection.
  • High Interrupt Rating: 200 kAIC interrupt rating provides robust short-circuit protection in demanding industrial systems.
  • Fuse Status Indicator: Centre fuse status indicator allows quick visual confirmation of fuse condition.
  • Flush Mounting: Flush mounting method for streamlined integration into switchgear and control panels.
  • Temperature Rating: Rated for continuous operation at temperatures greater than 60°C.
  • I²t Characteristics: Pre-arc I²t of 600000 and clearing I²t of 3950000 at 660V for predictable current-limiting performance.
  • Watt Losses: 245W power dissipation rating.

Certifications & Compliance

  • IEC Rated
  • CE Marked

Technical Specifications

  • Amperage Rating: 2000 A
  • Application: semiconductor protection
  • Certifications: IEC Rated
  • Class: Class aR
  • Clearing I²t: 3950000 at 660 V
  • Compliances: CE Marked
  • Fuse Indicator: Centre fuse status indicator
  • Insulated Metal Gripping Lugs (IMGL): No
  • Interrupt Rating: 200 kAIC
  • Mounting Method: Flush
  • Packaging Type: Standard
  • Pre-Arc I²t: 600000
  • Product Height: 105 mm
  • Product Length/Depth: 67 mm
  • Product Weight: 2094 g
  • Product Width: 120 mm
  • Temperature Rating: >60°C
  • Utilization Category: aR (accompanied semiconductor protection)
  • Voltage Rating: 690 V
  • Voltage Type: AC
  • Watt Losses: 245 W

Typical Applications

  • Semiconductor Overcurrent Protection
  • Industrial Power Distribution Systems
  • Rectifier and Power Converter Circuits
  • Variable Frequency Drive (VFD) Protection
  • Heavy Industrial and Commercial Switchgear

Why Bussmann?

Bussmann fuses are engineered to IEC standards and CE marked for verified compliance in global industrial installations. The 170M7082's Class aR design, 200 kAIC interrupt rating, and centre fuse status indicator combine to deliver dependable, code-compliant semiconductor protection for demanding power electronics applications.

Manufacturer Resources

Product Specs

Amperage Rating:
2000 A
Application:
semiconductor protection
Certifications:
IEC Rated
Class:
Class aR
Clearing I2t:
3950000 at 660 V
Compliances:
CE Marked
Fuse Indicator:
Centre fuse status indicator
Insulated Metal Gripping Lugs Imgl:
No
Interrupt Rating:
200 kAIC
Mounting Method:
Flush
Packaging Type:
Standard
Pre Arc I2t:
600000
Product Height:
105 mm
Product Length Depth:
67 mm
Product Weight:
2094 g
Product Width:
120 mm
Temperature Rating:
>60°C
Utilization Category:
aR (accompanied semiconductor protection)
Voltage Rating:
690 V
Voltage Type:
AC
Watt Losses:
245 W
Product Group:
Fuses
Department:
Electrical
Product Subgroup:
Other Fuses
Product Type:
Fuse
Product Details:
Fuse

Bussmann 170M7082 – Frequently Asked Questions

1) What does the aR class on the Bussmann 170M7082 fuse mean, and can I use it for overload protection?
Class aR is a partial-range semiconductor fuse, described as accompanied semiconductor protection. It clears short circuits only and has to be backed up by a separate device (breaker, overload relay, or drive electronics) for overload currents. If you need a fuse that protects across the full range from overload through short circuit, you want a gR/gS type instead, not the 170M7082.
2) What I2t values do I need to coordinate this fuse with my SCRs or diodes?
Use 600,000 A2s pre-arc and 3,950,000 A2s total clearing at 660 V for the 170M7082. The clearing figure has to sit below the I2t withstand of the SCR or diode you are protecting, otherwise the device fails before the fuse does. Pre-arc value is what you use when coordinating this fuse against an upstream or downstream fuse for selectivity.
3) How much heat does this Bussmann semiconductor fuse put into the enclosure?
Figure 245 W of dissipation per fuse at rated load. On a three-phase set that is roughly 735 W inside the cabinet, which is enough to drive enclosure ventilation or forced cooling sizing. The fuse itself is rated for continuous operation above 60 degrees C ambient, but the surrounding electronics usually set the real limit.
4) How is the 170M7082 mounted, and how much panel space do I need?
It is a flush mounting square-body fuse, bolted flat against the busbar or mounting plate rather than clipped into a holder. Overall size is 105 mm, 67 mm and 120 mm across its three dimensions, and it weighs 2094 g, so the busbar work needs to carry a little over 2 kg per fuse plus cable loads.
5) Does the 170M7082 have insulated gripping lugs for safe handling?
No. This one is built without insulated metal gripping lugs, so the blade terminals are bare and the fuse has to be isolated and proven dead before it is handled. If your maintenance procedure calls for IMGL versions, specify a different 170M part number.
6) Can maintenance tell if this fuse has blown without pulling it out?
Yes. The 170M7082 has a centre fuse status indicator, a mechanical pop-up on the top face that shows the element has operated. On a rectifier or converter bridge that saves opening and testing every fuse in the bank to find the one that cleared. It is visual only, so if you want a remote trip signal you need a microswitch indicator version.
7) Is the Bussmann 170M7082 IEC or UL rated?
It is built and rated to IEC standards and CE marked, which is what specifiers on European and export-built switchgear normally require. The listed compliance set covers IEC and CE only, so on a UL-labelled panel confirm the panel listing accepts an IEC-rated semiconductor fuse in that position.
8) What kind of equipment is a 170M square body fuse normally used in?
Semiconductor protection duty: rectifier and converter bridges, VFD input and DC link sections, soft starters, and heavy industrial switchgear where SCRs and diodes need fast short-circuit clearing. It is not a general branch-circuit or motor-feeder fuse, and it will not protect against sustained overload on its own.
How fast can I get the Bussmann 170M7082 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 170M7082 come with a warranty?
Absolutely. The Bussmann 170M7082 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 170M7082?
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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