Bussmann DFJ Drive Fuses
Bussmann offers a wide range of current-limiting DFJ high speed fuses which are UL Listed Class J fuses.
The DFJ drive fuses provide maximum protection for AC and DC drives and controllers and meet NEC® branch circuit protection requirements. They have a current rating of 1-600A and a voltage rating of up to 600Vac.
The DFJ drive fuse has the lowest I2t of any branch circuit fuse to protect power semiconductor devices that utilise diodes, gate turn-off thyristors, SCRs and SSRs.
Features
- Easily co-ordinated with existing and new variable speed drives and electric controllers
- Class J fuses allow the use of readily available fuse blocks, holders and switches
- Enables the lowest let-through energy of any branch circuit overcurrent protective device
Part Number | Amps |
l2t (A2 Sec) @ 600Vac/100kA Watts Pre-arc Clearing Loss |
||
DFJ-15 | 15 | 4 | 110 | 4.1 |
DFJ-20 | 20 | 8 | 365 | 4.0 |
DFJ-25 | 25 | 12 | 610 | 4.9 |
DFJ-30 | 30 | 20 | 1000 | 5.5 |
35 | 55 | 1100 | 6.8 | |
DFJ-40 | 40 | 90 | 1900 | 8.6 |
DFJ-50 | 50 | 140 | 2800 | 8.7 |
DFJ-60 | 60 | 290 | 6000 | 8.5 |
DFJ-70 | 70 | 450 | 3100 | 12 |
DFJ-80 | 80 | 650 | 4600 | 13 |
DFJ-90 | 90 | 1010 | 7200 | 13 |
DFJ-100 | 100 | 1460 | 10500 | 13 |
DFJ-110 | 110 | 1710 | 9500 | 17 |
DFJ-125 | 125 | 3580 | 20000 | 15 |
DFJ-150 | 150 | 5080 | 28000 | 19 |
DFJ-175 | 175 | 6310 | 35000 | 23 |
DFJ-200 | 200 | 9850 | 54500 | 24 |
DFJ-225 | 225 | 11420 | 51000 | 29 |
DFJ-250 | 250 | 17000 | 74500 | 30 |
DFJ-300 | 300 | 23500 | 103000 | 36 |
DFJ-350 | 350 | 38800 | 170000 | 39 |
DFJ-400 | 400 | 62200 | 272000 | 40 |
DFJ-450 | 450 | 44600 | 270000 | 56 |
DFJ-500 | 500 | 79500 | 480000 | 52 |
For further information on Bussmann’s DFJ Drive Fuses please call our team on: 01444 243 452 or email: .(JavaScript must be enabled to view this email address).

Eaton Bussmann
Eaton Bussmann are a division of Cooper Industries and are a leading Manufacturer of Circuit Protection Solutions. They manufacture a wide range of Circuit Protection Fuses, Microswitches and Trip Indicators.
Further information:
You can find further information on Eaton Bussmann using the following links:
Tel: 01444 243 452
Fax: 01444 870 722
Email: enquiries@gdrectifiers.co.uk
