MMT-British BS 88 690V 180-710A - EATON BUSSMANN(巴斯曼)资料中心

Description:
BS 88 style stud-mount fuses.

Ratings:

Volts: 690Vac/500Vdc

Amps: 6-710A

IR: 200kA RMS Sym.

Agency Information:
CE, Designed and tested to: BS 88 Part 4, IEC 269 Part 4, UL Recognized. 350Vdc (IEC) rating. Consult Cooper Bussmann 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
180MMT 200MMT 225MMT 280MMT 315MMT 355MMT 400MMT 450MMT 500MMT 560MMT 630MMT 710MMT	MMT	180A 200A 225A 280A 315A 355A 400A 450A 500A 560A 630A 710A	1650 2200 3700 6600 8600 13500 21000 30000 42000 60000 68500 78000	12000 16000 26000 47000 62000 97000 150000 220000 300000 430000 500000 600000	18000 23000 40000 70000 91000 140000 220000 320000 450000 640000 720000 850000	42 42 42 47 51 54 60 57 64 64 86 105

Time-Current Curve

Peak Let-Through Curve