Datasheet
cex-EP3
137
blade cartridge fuses gG and aM types
The gG or aM types protect the conductors of electrical circuits in the event of overbad or short-circuit
gG cartridge fuses:
The selectivity ratio is 1.6 instead of 2
The breaking capacity of 120000 A provides full protection in the most critical situations
aM cartridge fuses:
These cartridge fuses must be combined with a low-overload thermal protection device
The breaking capacity of 100000 A from size 10 x 38 upwards provides full protection in the most critical situations
Cylindrical industrial cartridge fuses can be used to protect DC circuits supplied at up to 48 V max.
n Rupture capacity curves
gG type aM type
n Consumption in watts when hot, at rated current
n gG
(1)
type limitation curve
10 000 000
1 000 000
100 000
10 000
1 000
100
25 35
63
100
160
250
400 630
1000
32
40
50
80 125 200
315 500 800
1250
Thermal stress in A
2
s
Rating in Amps
Total maximum thermal stress for critical current
Pre-arc thermal stress for critical current
Cartridge fuses
Fuse
gG aM
ratings (A)
Size 00 Size 0 to 4 Size 00 Size 0 to 4
25 2.1 1.3
32 3 1.8
35 3
40 3.3 4.2 2.5
50 4.5 5.5 3
63 6 6.5 3.6 3.9
80 7 8.5 5.2 5.5
100 7.5 9.5 6 6.5
125 13 12 7 8.5
160 15 15 11.5
200 19 13.5
250 23 17
315 24 24
400 33 28
500 36 34
630 45 41
800 51 49
1000 77 70
1250 80 75
10 000
1 000
100
10
1
0.1
0.01
10 000
1 000
100
10
1
0.1
0.01
110 100 1 000 10 000 100 000
25
32
35
40
50
63
80
100
125
160
200
250
315
400
500
630
800
1 000
1 250
Times in seconds
Current in Amps
10 000
1 000
100
10
0.1
0.01
10 000
1 000
100
10
1
0.1
0.01
110 100 1 000 10 000 100 000
Time in seconds
Current in Amps
32
40
50
63
80
100
125
160
200
250
315
400
500
630
800
1000
1
25
10 000 000
1 000 000
100 000
10 000
1 000
100
25
32
40
50
63
80
100
125
160
200
250
315
400
500
630
800
1000
Thermal stress in A
2
s
Rating in Amps
100
30
10
3
1
0.3
0.1
0.1 0.2 0.5 12 5102050 100
1 250
1 000
800
630
500
400
315
250
200
160
125
100
80
63
50
40
32
25
Limited currents at peak kA
Prospective short-circuit at kA rms
2.5 Ieff
(1) For aM cartridge fuses, see technical data sheets in the Legrand e-catalogue
n Thermal stresses (∫I
2
dt)
gG type (for 500 V±) aM type for 500 V± - except 1250 A for 400 V