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170M4491 Eaton Bussmann 1300V 315A Class aR High Speed Fuse
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Eaton Bussmann 170M4491 — 1300V 315A Class aR high speed fuse, 100 kAIC interrupting. Protects semiconductors in drives, rectifiers and inverters.
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170M4491 Eaton Bussmann 1300V 315A Class aR High Speed Fuse
At a Glance
- 1300 V (UL), 1250 V (IEC) rated voltage, 315 A rated current
- 100 kAIC interrupting rating
- Class aR time-current characteristic
- Non Indicating
The Eaton Bussmann 170M4491 is a square body fuse with 1300 V (UL), 1250 V (IEC) rated voltage, 315 A rated current, 100 kAIC interrupting capacity, carrying a Class aR time-current characteristic. Construction is non indicating.
Specifications
General specifications
| UPC | 051712259033 |
| EAN | 5704057026031 |
| Product Length/Depth | 69 mm |
| Product Height | 75 mm |
| Product Width | 53 mm |
| Product Weight | 956 g |
Electrical data
| Amperage Rating | 315 A |
| Class | Class aR |
| Clearing (I2T) | 90000 at 1000 V 120000 at 1250 V |
| Interrupt rating | 100 kAIC |
| Pre arc (I2T) | 15000 |
| Voltage rating | 1300 V (UL), 1250 V (IEC) |
| Watt losses | 65 W |
Product specifications
| Application | DC common bus DC drives power converters/rectifiers reduced voltage starters |
| Fuse indicator | Non Indicating |
| Fuse size | 1 |
| Fuse type | GKN/75 Type K indicator for micro |
Series Selection Table
Applications
- Industrial equipment
Selection Notes
- Check the voltage rating against the system voltage, and the interrupting rating against the available fault current, before specifying.
Common Questions
What are the ratings of the Eaton Bussmann 170M4491?
1300 V (UL), 1250 V (IEC) / 315 A, with a 100 kAIC interrupting rating.
How much fault current can the 170M4491 interrupt?
100 kAIC. The available fault current at the installation point must not exceed this value.
What does Class aR mean for the 170M4491?
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 170M4491 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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