cooper bussmann

170F Square Body DC Fuses 1200Vdc 160-420A

  
Description:
High speed fuses that provides superior protection in light and heavy harsh DC traction applications as 1200Vdc and below circuits, and as DC link/power converters.
 
Ratings:
Volts: 1200Vdc
Amps: 160-420A
IR: 1200Vdc = 100kA L/R: 15 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
-SK NB/140 Type K Indicator Rated Voltage(Vdc) Rated Current RMS-Amp Max I2T(A2 Sec)@ 1000Vdc Watts Loss(W)
L/R=15ms L/R=45ms
2SKN / 140 170F8230
170F8231
170F8232
170F8233
170F8234
170F8235
1200 160
200
250
315
400
420
12000
20000
43000
87000
180000
215000
20000
35000
75000
150000
310000
375000
75.0
85.0
94.0
104.0
120.0
122.0
Microswitch: 170H0069, 170H3027 (gold)

Dimensions (mm):



Time-Current Curve

 

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