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170M7085 Eaton Bussmann 690V 3500A Class aR High Speed Fuse
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Eaton Bussmann 170M7085 — 690V 3500A Class aR high speed fuse, 200 kAIC interrupting. Protects semiconductors in drives, rectifiers and inverters.
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170M7085 Eaton Bussmann 690V 3500A Class aR High Speed Fuse
At a Glance
- 690 V, 700 V rated voltage, 3500 A rated current
- 200 kAIC interrupting rating
- Class aR time-current characteristic
- Centre fuse status indicator
The Eaton Bussmann 170M7085 is a high speed fuse with 690 V, 700 V rated voltage, 3500 A rated current, 200 kAIC interrupting capacity, carrying a Class aR time-current characteristic. Construction is centre fuse status indicator.
Specifications
General specifications
| Model Code | FUSE 3500A 690V 4BKN/65 AR |
| UPC | 051712266581 |
| EAN | 5027590463812 |
| Product Length/Depth | 67 mm |
| Product Height | 120 mm |
| Product Width | 108 mm |
| Product Weight | 1369.5 g |
| Global Catalog | 170M7085 |
Product specifications
| Amperage Rating | 3500 A |
| Breaking capacity | 200 kA |
| Fuse indicator | Centre fuse status indicator |
| Insulated metal gripping lugs (IMGL) | No |
| Temperature rating | >60°C |
| Utilization category | aR (accompanied semiconductor protection) |
| Voltage type | AC |
| Fuse size | 4 |
| Rated voltage AC | 690 V |
| Center-to-center distance of connections | 66.6 mm |
| Current type | AC |
| Mounting dimension | M10 |
| Class | Class aR |
| Clearing (I2T) | 22000000 at 660 V |
| Watt losses | 325 W |
| Pre arc (I2T) | 3250000 |
| Color | None |
| Interrupt rating | 200 kAIC |
| Construction size | 4 |
| Mounting method | Flush |
| Packaging type | Standard |
| Voltage rating | 690 V, 700 V |
| Type | Fuse |
| Application | Semiconductor, DC Common bus, DC drives, power converters/rectifiers |
| Fuse type | BKN/65 Type K indicator |
| Fuse system (according to IEC 60269) | Other |
Series Selection Table
Applications
- Industrial equipment
Selection Notes
- Semiconductor fuses are chosen on I²t let-through against the device surge rating, not on continuous current alone.
Common Questions
What are the ratings of the Eaton Bussmann 170M7085?
690 V, 700 V / 3500 A, with a 200 kAIC interrupting rating.
How much fault current can the 170M7085 interrupt?
200 kAIC. The available fault current at the installation point must not exceed this value.
What does Class aR mean for the 170M7085?
Class aR defines the fuse's time-current characteristic. E-rated fuses carry a defined melting curve so they coordinate predictably with upstream and downstream devices; mixing E and non-E ratings in one feeder defeats that coordination.
How should I select the 170M7085 for a circuit?
Match the voltage rating to the system voltage, keep the continuous current above the load current, and check that the interrupting rating exceeds the available fault current. In medium voltage work, select on the transformer or feeder fault level rather than the load current alone.
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