cooper bussmann

LMT-British BS 88 240V 160-450A

  
LMT

Description: BS 88 style stud-mount high speed semiconductor fuses.

Ratings:
Volts: 240Vac/150Vdc
Amps: 160-450A
IR: 200kA RMS Sym.
Agency Information: CE, Designed and tested to: BS 88 Part 4, IEC 269 Part 4, UL Recognized. All fuses above have been tested at 318Vac. Consult Cooper Bussmann for specific 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).

Dimensions (mm)


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.

Catalog Numbers
Catalog Numbers Type Rated Current RMS-Amps I2t(A2 Sec) Watts Loss
Pre-arc Clearing
at 120V at 240V
160LMT LMT 160A 1100 7000 16000 17
200LMT 200A 1500 10000 20000 28
250LMT 250A 3200 20000 40000 28
315LMT 315A 6000 35000 75000 35
355LMT 355A 8000 50000 100000 35
400LMT 400A 14000 70000 160000 40
450LMT 450A 18000 100000 220000 42
• Watts loss provided at rated current.

Features and Benefits
• Excellent cycling capability
• Excellent DC performance
• Low arc voltage and low energy let-through (I2t)

Typical Applications
• DC common bus
• AC and DC drives
• Power converters/rectifiers
• Reduced voltage starters

Time-Current Curve


Peak Let-Through Curve
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