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Bussmann 170M7026 Class aR Semiconductor Fuse, 2500A, 690V
Model: BUSS-170M7026
Bussmann 170M7026 Class aR Semiconductor Fuse, 2500A, 690VThe Bussmann 170M7026 is a Class aR fuse (style 4SBKN/60) engineered for accompanied semiconductor protection in demanding AC power circuits...
Bussmann
$5,258.21
Bussmann 170M7084 2500A 690V Class aR Semiconductor Fuse
The Bussmann 170M7084 is a Class aR fuse engineered for semiconductor protection in demanding power electronics applications. Cataloged under Bussmann's 2500A/690V designation, this fuse carries a manufacturer Amperage Rating of 3000A, a Voltage Rating of 690V AC, and a 200 kAIC Interrupt Rating for high fault-current environments. It is UL Recognized and CE Marked, and its aR Utilization Category identifies it as an accompanied semiconductor protection fuse intended for coordinated use with a backup protective device.
Key Features
- Amperage Rating: 3000A manufacturer-rated capacity for high-current semiconductor protection circuits.
- Voltage Rating: 690V AC rating suited to medium-voltage industrial power electronics.
- Class aR Construction: Utilization Category aR (accompanied semiconductor protection), designed to work alongside a backup protective device.
- Interrupt Rating: 200 kAIC interrupt rating for reliable fault clearing in high fault-current systems.
- Mounting Method: Flush mounting for compact panel and enclosure installations.
- Watt Losses: Rated watt loss of 305 W at full load.
- Temperature Rating: Rated for continuous operation at temperatures greater than 60°C (>60°C).
- I2t Coordination: Pre-Arc I2t of 2,000,000 and Clearing I2t of 13,500,000 at 660V for precise coordination with semiconductor device withstand ratings.
Certifications & Compliance
- UL Recognized
- CE Marked
Technical Specifications
- Amperage Rating: 3000 A
- Application: semiconductor protection
- Certifications: UL Recognized
- Class: Class aR
- Clearing I2t: 13500000 at 660 V
- Compliances: CE Marked
- Fuse Indicator: Other
- Insulated Metal Gripping Lugs (Imgl): No
- Interrupt Rating: 200 kAIC
- Mounting Method: Flush
- Packaging Type: Standard
- Pre Arc I2t: 2000000
- Product Height: 120 mm
- Product Length Depth: 67 mm
- Product Weight: 2413.5 g
- Product Width: 105 mm
- Temperature Rating: >60°C
- Utilization Category: aR (accompanied semiconductor protection)
- Voltage Rating: 690 V
- Voltage Type: AC
- Watt Losses: 305 W
Typical Applications
- Semiconductor Device Protection
- Accompanied Protection for Power Semiconductor Assemblies
- Industrial Power Electronics and Converter Circuits
- Flush-Mounted Panel and Enclosure Installations
- High Fault-Current Industrial Distribution Systems
Why Bussmann?
Bussmann fuses are engineered to demanding UL and CE standards, and the 170M7084's UL Recognized and CE Marked status reflects that commitment to verified performance. With a 200 kAIC interrupt rating and precisely specified Pre-Arc and Clearing I2t values, this Class aR fuse is built for coordinated, code-compliant protection of semiconductor equipment in professional electrical installations.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 3000 A
- Application:
- semiconductor protection
- Certifications:
- UL Recognized
- Class:
- Class aR
- Clearing I2t:
- 13500000 at 660 V
- Compliances:
- CE Marked
- Fuse Indicator:
- Other
- Insulated Metal Gripping Lugs Imgl:
- No
- Interrupt Rating:
- 200 kAIC
- Mounting Method:
- Flush
- Packaging Type:
- Standard
- Pre Arc I2t:
- 2000000
- Product Height:
- 120 mm
- Product Length Depth:
- 67 mm
- Product Weight:
- 2413.5 g
- Product Width:
- 105 mm
- Temperature Rating:
- >60°C
- Utilization Category:
- aR (accompanied semiconductor protection)
- Voltage Rating:
- 690 V
- Voltage Type:
- AC
- Watt Losses:
- 305 W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse
Bussmann 170M7084 – Frequently Asked Questions
1) Can the Bussmann 170M7084 be used as the only overcurrent protection on a drive, or does it need a backup device?
It needs a backup device. The 170M7084 carries Utilization Category aR, accompanied semiconductor protection, which means it clears short circuits to protect the semiconductor but is not intended to handle overload currents on its own. Pair it with an upstream breaker or overload protective device that covers the low-multiple overload range. If you need a fuse that handles both overload and short circuit, you want a gR/gS full-range semiconductor fuse instead.
2) How do I know this fuse will actually protect my IGBT or thyristor?
Compare I2t letthrough against the device withstand. The 170M7084 has a pre-arc I2t of 2,000,000 A2s and a total clearing I2t of 13,500,000 A2s at 660 V. Both the fuse's clearing I2t must sit below the semiconductor's rated I2t withstand, and the peak arc voltage must stay under the device blocking voltage. If your thyristor's I2t rating is below 13.5 million A2s, this fuse is too large for that device.
3) What current is the Bussmann 170M7084 actually rated for?
Bussmann rates the 170M7084 at 3000 A. It is a high-current semiconductor fuse for converter and rectifier stacks, so size it against the continuous RMS current through the leg it protects, not the drive's nameplate output alone.
4) How much heat does the 170M7084 put into the enclosure?
Figure 305 W of watt loss at full load per fuse. In a three-phase stack with several fuses that adds up fast, so size enclosure ventilation or forced cooling accordingly. The fuse is rated for continuous operation above 60 degrees C ambient, but derating still applies as ambient climbs.
5) Can I use the 170M7084 on a DC link instead of AC?
Its published rating is 690 V AC. DC applications on square-body semiconductor fuses use a separate and usually much lower voltage rating with time-constant limits, so do not carry the 690 V figure over to a DC bus. For DC link protection, specify a fuse with a published DC voltage rating that covers your bus voltage.
6) Does the 170M7084 have a blown fuse indicator or microswitch for remote alarm?
The indicator type on the 170M7084 is listed as Other, not a standard striker or microswitch designation. If your panel relies on a striker-pin microswitch for a trip signal, confirm the indicator style matches your existing switch assembly before you order, or plan for separate voltage sensing across the fuse.
7) Does the 170M7084 come with insulated gripping lugs for safer handling?
No. The 170M7084 is supplied without insulated metal gripping lugs (IMGL), in standard packaging. Plan on de-energizing and verifying zero voltage before handling, and use the bolt connections for removal rather than pulling on the body.
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Does the Bussmann 170M7084 come with a warranty?
Absolutely. The Bussmann 170M7084 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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