JCASE
廬
Cartridge Fuse
The JCASE is a cartridge style fuse with female terminal design, pro-
viding both increased time delay and low voltage drop to protect high
current circuits and handle inrush currents. The JCASE was designed
and patented by Littelfuse.
1000
20A
30A
40A
50A
60A
100
TIME IN SECONDS
14.1
12.0
10
1
0.1
0.01
1
10
100
1000
CURRENT IN AMPERES
10000
TIME-CURRENT CHARACTERISTICS
27.0
18.7
24.4
% of
Rating
100
135
200
350
600
Opening Time
Minimum
100 hrs
60 s
4s
0.2 s
0.04 s
Maximum
鈥?/div>
1800 s
60 s
7s
1s
12.1
1.0
10.0
6.7
5.5
Interrupting Rating:
1000A @ 32 VDC
Voltage Rating:
32 VDC
I
nsertion Force:
53N max. (12 lb.)
Extraction Force:
9N min. (2 lb.)
Ambient Temp
:
-40藲C to + 125藲C
JCASE Fuse Series Temperature Rerating Curve
110
Rerating Factor (% Rated Current)
JCASE CARTRIDGE FUSE TABLE
Current
Rating
(A)
20
25
30
40
50
60
Typ. Voltage
Drop at
Rated Current
(mV)
106
101
91
87
88
87
Part
Number
495020
495025
495030
495040
495050
495060
Housing
Color
Blue
White
Pink
Green
Red
Yellow
105
100
95
90
See page 32 for
JCASE Shunt
85
-40 -30 -20 -10
0 10
20 30 40 50 60 70 80 90 100 110 120
Ambient Temperature (擄C)
15
1
