Page 27 - Ferraz semiconductor UL

Semiconductor (A) fuses
Semiconductor (AC) fuses

American Round Fuses

Form 101 Range

A70QS

Semiconductor Protection Fuses

Clearing I t at 700V DC, Maximum Arc Volts vs. System Voltage
2
100kA, L/R = 10 ms

Ampere Clearing I t
2
2
Rating (A s x 10 )
3
35 0.25
40 0.35
50 0.60
70 1.3 MAXIMUM PEAK ARC VOLTS
80 1.8
90 2.4
100 3.1
125 5.3
150 8.1
175 12
200 16
225 21.5
250 27.5
300 42
CIRCUIT VOLTAGE (VOLTS RMS)
350 63
400 85 Watts Loss at Rated Current
450 115
500 150
Ampere Watts Ampere Watts
600 201 Rating Loss (W) Rating Loss (W)
700 325
35 6.2 200 41
800 450
40 7.5 225 37
50 9.8 250 42
60 12 300 53
70 15 350 64
80 18 400 75
90 20 450 78
100 24 500 92
125 22 600 116
150 29 700 125
175 35 800 143

DC Voltage Capability vs. Time Constant Watts Loss vs. % Rated Current

DC VOLTAGE CAPABILITY CORRECTION FACTOR FOR WATTS LOSS

L/R TIME CONSTANT (MS) PERCENT RATED CURRENT

SCAC27
12/04