MJS 300

Manufacturer Part NumberMJS 300
DescriptionFUSE 300MA 250V SLOW 5X15MM MJS
ManufacturerBel Fuse Inc
SeriesMJS
TypeFerrule
MJS 300 datasheet
 


Specifications of MJS 300

Fuse TypeSlow Blow, Time LagVoltage - Rated250VAC
Current300mAPackage / CaseAxial, 2AG, 5x15mm
Size / Dimension0.217" Dia x 0.591" L (5.50mm x 15.00mm)Mounting TypeThrough Hole
Operating Temperature-55°C ~ 125°CVoltage Rating (vac)125V
Current Rating0.3APower Dissipation0.36W
Operating Temp Range-55C to 125CMountingThrough Hole
Product Length (mm)15.5mmProduct Depth (mm)5.5mm
Product Height (mm)5.5mmHousing MaterialGlass
Operating Temperature ClassificationMilitaryLead Free Status / RoHS StatusContains lead / RoHS non-compliant
Color-Other names0653-0300-11
0653-0300-11
0653030011
MJS300
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MJSD0903
MJS Fuses are primarily intended for
use in telecommunication circuit applica-
tions requiring low current protection with
high surge tolerance. They are typically
used to replace heat coil type devices.
They are designed to be placed between
the line input and the surge arresting components (mov, gas tube, zenor
diode, air gaps, etc.)
These fuses will withstand transient surge currents generated by
lightning in accordance with the attached table.
MJS fuses guard protected circuitry against sustained overload or
short circuit conditions. Such sustained overloads may be generated by
accidental contact between utility cables and phone lines (power line
cross).
MJS Fuses are used in circuits to obtain compliance with the test
requirements specified in UL 1950/60950 and Bellcore 1089.
Electrical Characteristics
B
o l
e T
i t s
g n
C
u
e r r
t n
M
n i
m i
u
m
0 1
% 0
4
H
. s r
3 1
% 5
N
A /
0 2
% 0
3
c e s
0 5
% 0
1
0 0
m
c e s
1
0 0
% 0
0 3
m
c e s
Approvals
a S
e f
y t
g A
n e
y c
p A
r p
v o
s l a
V
L
e t s i
F d
e l i
. o n
2 E
6 0
4 2
ß
C
t r e
e i f i
F d
e l i
o n
L .
3 R
7 9
2 7
p
F
e l i
. o n
E J
1 T
3 0
- 7
1 3
0 0
- 3
0 1
3 0
Power Cross Rating
600V ac, 40A
Operating Temperature
-55ºC to +125ºC
Physical Specification
Materials
Glass body / Nickel Plated Brass Caps
Lead wire: Tin-lead plated Copper, Diameter 0.032"
Option With Heat Shrink Tubing (VW-1) over body
Marking
On fuse: “bel”, “MJS”, “Current Rating”, “250V” &
“Appropriate Safety Logos”
On label: Above info plus “c” and interrupting rating
Packaging
1. In bulk: 500 pcs per box
2. On Axial Tape & Reel: 1,500 pcs per reel
3. Tape & Reel specification: per EIA-296-E & IEC 286-1
@ 10mm Pitch and 52.4mm inside Tape Spacing
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302 • Tel: 201-432-0463 • Fax: 201-432-9542 • E-Mail: belfuse@belfuse.com
33
Type MJS
Lightning Surge Withstand Fuse
m
a C
l a t
g o
u N
m
b
r e
M
S J
1
0 0
M
S J
1
5 2
M
S J
1
0 5
M
S J
2
0 0
M
S J
2
0 5
M
S J
3
0 5
M
S J
4
0 0
M
S J
5
0 0
M
S J
7
0 0
M
S J
7
0 5
(UL/CSA STD.248-14)
M
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1
w
T
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e
M
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. 1
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x a
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u
m
M
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1
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N
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r H
M
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2
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c e s
M
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2
5 .
5 . 1
c e s
M
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3
3
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m
c e s
M
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3
5 .
Vßpc
M
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4
M
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5
M
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6
A
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p
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/
V
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R . I
a .
l i b
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M
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7
1
0 0
A m
.
-
A 7
/
2 1
V 5
C A
@
0 1
0 0 ,
A 0
Consult manufacturer for other ratings
1
0 0
A m
.
-
A 7
/
5 2
V 0
C A
@
0 2
A 0
A 1
.
-
A 5
/
2 1
V 5
C A
@
0 5
A 0
See P.4 for explanation of Peak Surge Current Withstand
Mechanical Dimensions
Website: www.belfuse.com
2
2
A
m
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y T
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l a c
o V
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M
l e
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1
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R
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(
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(
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m
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. x
A (
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A (
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1
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8 6
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2
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3
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FIG A
"
0.59" 0.02"
0.217" 0.004"
1.50" 0.08
)
(15.0 0.5mm)
(5.5 0.1mm)
(38.1 2.0mm
SEE LEAD SIZE IN “MATERIAL”
MJS
0.710" 0.080"
(18.0 2.0mm)
0.244" 0.008"
0.590" 0.020"
(6.2 0.2mm)
(1.5 1.0mm)
WITH INSULATION SLEEVE
ORDERING INFORMATION SEE PAGES 67 & 68
5 x 15mm Glass Tube
e P
k a
S
r u
e g
C
r u
e r
t n
A (
m
) p
M
x a
m i
u
m
o P
w
r e
F (
g i
) A
(
g i f
) B
D
s s i
p i
i t a
n o
5 2
u P
s l
s e
0 5
u P
s l
s e
(
W
)
0 1
S u
x
0 1
0 0
S u
0 1
S u
x
5
0 6
S u
4
5 .
6
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. 0
2 2
5
6 .
7
5 .
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4 2
6
8 .
9
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2 1
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0 3
2 1
6 1
. 0
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8 1
4 2
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0 4
0 2
7 2
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2 4
6 2
5 3
. 0
7 4
8 3
0 5
. 0
4 5
8 3
0 5
. 0
5 5
6 5
5 7
. 0
4 6
5 7
1
0 0
. 0
1 7
4 9
1
5 2
. 0
0 8
1
0 2
1
0 6
. 0
9 8
1
0 5
2
0 0
. 0
9 9
1
5 9
2
0 6
. 1
0 1
2
5 2
3
0 0
. 1
6 1
2
5 5
3
0 4
. 1
2 2
3
0 3
4
0 4
. 1
0 4
4
8 2
5
0 7
. 1
0 5
4
8 8
6
0 5
. 1
0 6
FIG B

MJS 300 Summary of contents

  • Page 1

    ... On Axial Tape & Reel: 1,500 pcs per reel 3. Tape & Reel specification: per EIA-296-E & IEC 286-1 @ 10mm Pitch and 52.4mm inside Tape Spacing Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel: 201-432-0463 • Fax: 201-432-9542 • E-Mail: belfuse@belfuse.com 33 ...

  • Page 2

    ... NOTE - see important information under “User Guide”on P.08 Corporate Office Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel: 201-432-0463 Fax: 201-432-9542 E-Mail: belfuse@belfuse.com Website: www.belfuse.com 5 x 15mm Glass Tube 1 10 CURRENT IN AMPERES Far East Office Bel Fuse Ltd ...