cooper bussmann

MT-British BS 88 690V 160-355A

  
Description:
BS 88 style stud-mount fuses.
 
Ratings:
Volts: 690Vac/500Vdc
Amps: 160-355A
IR: 200kA RMS Sym.
 
Agency Information:
CE, Designed and tested to: BS 88 Part 4, IEC 269 Part 4, UL Recognized. Consult Cooper Bussmann OR Bolfmax for UL Recognition status.
 
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
• Excellent DC performance
• Low arc voltage and low energy let-through (I2t)
• Low watts loss
 
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters

Dimensions (mm)


Catalog Numbers
Catalog Numbers Type Rated Current RMS-Amps I2t(A2 Sec) Watts Loss
Pre-arc Clearing
at 415V at 660V
160MT
180MT
200MT
250MT
280MT
315MT
355MT
MT 160A
180A
200A
250A
280A
315A
355A
2400
3800
6000
11500
16500
19000
22000
15000
25000
40000
80000
100000
125000
160000
25000
38000
58000
110000
150000
180000
200000
26
26
27
32
35
42
51


Time-Current Curve

Peak Let-Through Curve

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