cooper bussmann

170M Square Body Flush End Contact 1250V(IEC/UL):630-2800A

  
Description:
High speed square body fuses, for the protection of the power rectifier section of the equipment.
 

 
Ratings:
Volts: 1250Vac (IEC)
Amps: 630-2800A
IR: 125kA RMS Sym.
 
Agency Information:
CE, Designed and tested to IEC 60269: Part 4, 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 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 Size Catalog Number Electrical Characteristics
-BU/75 without Indicator -BKE/75
Type K
Indicator
-BKN/75
Type K
Indicator
-BU/80 without Indicator -BKE/80
Type K
Indicator
-BKN/80
Type K
Indicator
Rated Voltage (V) Rated Current RMS-Amp I2t (A2Sec) Watts Loss (W)
Pre-arc Clearing  at
1250V
23 170M6775
170M6776
170M6777
170M6805
170M6778
170M6779
170M6780
170M6781
170M6782
170M6783

 
170M6795
170M6796
170M6797
170M6807
170M6798
170M6799
170M6800
170M6801
170M6802
170M6803

 
170M6785
170M6786
170M6787
170M6806
170M6788
170M6789
170M6790
170M6791
170M6792
170M6793

 










170M6784
170M6815










170M6804
170M6833










170M6794
170M6827
1250 630A
700A
800A
900A
1000A
1100A
1250A
1400A
1600A
1800A
2000A
2200A
38000
54000
78000
120000
155000
220000
330000
460000
820000
1200000
1800000
2300000
310000
440000
640000
980000
1250000
1750000
2700000
3800000
5200000
7600000
11000000
14500000
170
180
190
200
210
220
230
240
250
260
270
280
      170M6816
170M6817
170M6834
170M6835
170M6828
170M6829
1100 2500A
2800A
3200000
5000000
†16000000
†24000000
290
300
† A2s @ 1000V

Dimensions (mm):


Time-Current Curve


Peak Let-Through Curve


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