cooper bussmann

FWJ 1000V Ferrule High speed fuses

  
Description:
Ferrule style high speed fuses.
 
Ratings:
Volts: 1000Vac/800Vdc
Amps: 20-30A
IR: 25kA RMS Sym. 20kA@ 800Vdc
 
Agency Information:
CE, UL Recognized
 
Electrical Characteristics
Total Clearing I2t
The total clearing I2t at rated voltage and at power factor of 15% are given in the electrical characteristics. For other voltages, the clearing I2t is found by multiplying by correction factor, K, given as a function of applied working voltage, Eg, (rms).

Arc Voltage
This curve gives the peak arc voltage, UL, which may appear across the fuse during its operation as a function of the applied working voltage, Eg, (rms) at a power factor of 15%.
 
Power Losses
Watts loss at rated current is given in the electrical characteristics. The curve allows the calculation of the power losses at load currents lower than the rated current. The correction factor, Kp, is given as a function of the RMS load current, Ib, in % of the rated current.

Features and Benefits
• Excellent cycling capability and DC performance
• Low arc voltage and low energy let-through (I2t)
• Low watts loss in a compact size
• Used with finger-safe holders/blocks
 
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters

Dimensions - mm (inches)


Catalog Numbers
Electrical Characteristics Ordering Information
Size

Rated
Current
RMS-Amps

I2t (A2S) Watts
Loss
Part
Number
Carton
Qty.
Carton
Weight (kg)
Pre-arc Clearing
at 1000V
14 x 67mm
(9/16")
20
25
30
25
33
52
220
350
450
9
11
14
FWJ-20A14F
FWJ-25A14F
FWJ-30A14F
10 0.3
• Watts loss provided at rated current.

Fuseclips:
• Catalog Number: 5591

Time-Current Curve

Peak Let-Through Curve

 
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