cooper bussmann

170E Square Body High Speed DC Fuses 4000Vdc 20-450A

  
 
Description:
High speed fuses for the protection of DC circuits in equipment.
 
Ratings:
Volts:  4000Vdc
Amps:  20-450A
IR:  60kA L/R: 25 ms.
 
Agency Information: Consult Cooper Bussmann.
 
Electrical Characteristics
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.

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 DC performance
• Low arc voltage and low energy let-through (I2t)
• Low watts loss
• Superior cycling capability
 
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters

Catalog Numbers
Fuse Type Cat Numbers Electrical Characteristics
-SKN/394
Type K
Indicator
Rated
Voltage
(Vdc)
Rated
Current
RMS-Amp
Watts
Loss
(W)
1*SKN/394 170E3914
170E3915
170E3916
170E3917
170E3918
170E3919
170E3984
170E3933
170E3922
4000 20
25
32
40
50
63
80
100
125
23
28
34
45
57
72
91
114
143
2 SKN/394 170E8882
170E8883
170E8884
160
200
250
182
228
285
2//2SKN/394 170E8885
170E8886
170E8887
170E8888
315
350
400
450
360
400
455
515


Dimensions (mm):

Type 1*SKN/394


Type 2SKN/394


Type 2//SKN/394


Square Body DC Fuses — 20-125A: 2000V
Time-Current Curve


Square Body DC Fuses — 160-450A: 4000V
Time-Current Curve


Square Body DC Fuses — 20-125A: 2000V
Peak Let-Through Curve


Square Body DC Fuses — 160-450A: 4000V
Peak Let-Through Curve


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