Bussmann 170M5889 Eaton series high speed square body fuse, 690V (IEC), 630A, 200 kAIC, Top fuse status indicator, Fuse, Blade end X Din 43-620 blade end, Class gR, DIN 43 620.
- Amp rating: 630 A
- Voltage rating: 690 V
- Class: Class gR
- Interrupt rating: 200 kAIC
- Product type: Fuse
- Dimensions (L x W x H): 210 x 160 x 80 mm
Genuine Bussmann part number 170M5889.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 630 A
- Application:
- semiconductor protection
- Certifications:
- IEC Rated
- Class:
- Class gR
- Clearing I2t:
- 770000 at 600 V
- Compliances:
- CE Marked
- Connection:
- Blade end x Din 43-620 blade end
- Fuse Indicator:
- Top fuse status indicator
- Fuse Shape:
- Square body, knife blade contacts
- Insulated Metal Gripping Lugs Imgl:
- No
- Interrupt Rating:
- 200 kAIC
- Mounting Method:
- DIN 43 620
- Packaging Type:
- Standard
- Pre Arc I2t:
- 150000
- Product Height:
- 80 mm
- Product Length Depth:
- 210 mm
- Product Weight:
- 387 g
- Product Width:
- 160 mm
- Utilization Category:
- gR (general purpose semiconductor protection)
- Voltage Rating:
- 690 V
- Voltage Type:
- AC
- Watt Losses:
- 79 W
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse
Bussmann 170M5889 – Frequently Asked Questions
1) Will the Bussmann 170M5889 fuse mount in a DIN 43 620 fuse holder or busbar mount?
That is exactly what it is built for. The 170M5889 is a square body high speed fuse with knife blade contacts, mounted per DIN 43 620, with a blade end x DIN 43-620 blade end connection. So one end is a standard blade and the other is the DIN 43-620 blade pattern. If your gear is drilled for a different centre spacing or takes flush-end (bolt-in) fuses, this one will not land on it.
2) Is a gR fuse the right choice for protecting a drive rectifier, or do I need aR?
Class gR is a full-range semiconductor fuse: it clears both short circuits and sustained overloads, so it can protect the whole circuit including cable, not just the semiconductor. The 170M5889 is rated gR for general purpose semiconductor protection. An aR fuse is partial range, short circuit only, and needs a separate overload device such as the drive's electronic protection. If your rectifier or drive already provides overload protection, aR is commonly specified; if it does not, gR is the one to use.
3) Can I use the 170M5889 630A fuse on a 480V or 600V AC system?
Yes. The 170M5889 is rated 690V AC (IEC), and a fuse can be applied at or below its voltage rating, so 480V and 600V AC systems are within range. It is an AC-rated part, so do not apply it to a DC link or DC drive section without a DC rating for that circuit. Current rating is 630A with a 200 kAIC interrupting rating.
4) What I2t values do I need to coordinate this fuse with my SCR or diode?
For the 630A 170M5889, pre-arcing (melting) I2t is 150,000 A2s and total clearing I2t is 770,000 A2s at 600V. Compare the clearing figure against the I2t withstand of the SCR or diode you are protecting; the semiconductor's rating has to be the larger number. Note the clearing value is quoted at 600V, so at a lower circuit voltage let-through will be less.
5) I have a 170M5889 in my drive now. Is this the same part or a substitute?
Same part. 170M5889 is the genuine Eaton Bussmann part number, a 630A, 690V, 200 kAIC gR square body high speed fuse with a top indicator and blade end x DIN 43-620 blade ends. If the fuse you pulled carries that number, this is a direct one-for-one replacement with no changes to the holder or busbar.
6) How much heat does a 630A Bussmann square body fuse put into the enclosure?
Watt loss is 79 W at rated current for the 170M5889. That matters for panel thermal calculations and for derating: three of these in a three-phase set puts roughly 237 W into the cabinet before you count anything else. Size your enclosure ventilation or cooling accordingly, and keep in mind that loss falls as load drops below the 630A rating.
7) Can I tell from outside the panel whether this fuse has blown?
Yes, the 170M5889 carries a top-mounted fuse status indicator, so a blown element is visible from above the fuse without pulling it. That top position is worth checking against your installation: if the fuses are stacked or sit behind a barrier, the indicator has to remain visible for it to be any use. It does not have insulated metal gripping lugs, so use the proper puller when removing it.
8) What size is the 170M5889 fuse and will it fit the space I have in the cabinet?
The 170M5889 measures 210 x 160 x 80 mm and weighs 387 g. Check that footprint against the gap between your busbars and the panel door before ordering, since square body fuses of this amperage take up considerable depth.
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Does the Bussmann 170M5889 come with a warranty?
Absolutely. The Bussmann 170M5889 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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