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170M8505 Eaton Bussmann 1000V 550A Class aR High Speed Fuse
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Eaton Bussmann 170M8505 — 1000V 550A Class aR high speed fuse, 125 kAIC 150 kAIC interrupting. Protects semiconductors in drives, rectifiers and inverters.
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170M8505 Eaton Bussmann 1000V 550A Class aR High Speed Fuse
At a Glance
- 1000 V rated voltage, 550 A rated current
- 125 kAIC 150 kAIC interrupting rating
- Class aR time-current characteristic
- Connector M12 terminations
The Eaton Bussmann 170M8505 is a square body fuse with 1000 V rated voltage, 550 A rated current, 125 kAIC 150 kAIC interrupting capacity, carrying a Class aR time-current characteristic. Construction is none.
Specifications
General specifications
| EAN | 5027590465090 |
| UPC | 051712603805 |
| Product Length/Depth | 90 mm |
| Product Height | 74 mm |
| Product Width | 160 mm |
| Product Weight | 915 g |
Product specifications
| Amperage Rating | 550 A |
| Breaking capacity | 125 kA |
| Fuse indicator | None |
| Insulated metal gripping lugs (IMGL) | No |
| Utilization category | aR (accompanied semiconductor protection) |
| Voltage type | AC |
| Fuse size | 3 |
| Rated voltage AC | 1000 V |
| Center-to-center distance of connections | 82 mm |
| Current type | AC |
| Mounting dimension | M12 |
| Class | Class aR |
| Clearing (I2T) | 310000 at 1000 V |
| Watt losses | 115 W |
| Fuse shape | Square body, flush end contacts |
| Pre arc (I2T) | 52000 |
| Color | None |
| Interrupt rating | 125 kAIC 150 kAIC |
| Fitted with: | Type K Indicator for micro |
| Connection | Connector M12 |
| Construction size | 3 |
| Mounting method | Flush |
| Packaging type | Standard |
| Voltage rating | 1000 V |
| Type | Square body flush end contact -GKN/- type K indicator for micro |
| Application | DC common bus DC drives power converters/rectifiers reduced voltage starters |
| Fuse type | GKN/75 Type K indicator for micro |
| Fuse system (according to IEC 60269) | Other |
Series Selection Table
Applications
- Industrial equipment
Selection Notes
- Termination: Connector M12. Confirm the mating clip or busbar before ordering; ferrule and blade ends are not interchangeable.
Common Questions
What are the ratings of the Eaton Bussmann 170M8505?
1000 V / 550 A, with a 125 kAIC 150 kAIC interrupting rating.
How much fault current can the 170M8505 interrupt?
125 kAIC 150 kAIC. The available fault current at the installation point must not exceed this value.
What does Class aR mean for the 170M8505?
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 does the 170M8505 connect?
Connector M12. Confirm the mating clip, holder or busbar before ordering — ferrule and blade ends are not interchangeable.
How should I select the 170M8505 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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