BEL MJS500

5 x 15mm Glass Tube
Type MJS
Lightning Surge Withstand Fuse
MJSD0903
MJS Fuses are primarily intended for
use in telecommunication circuit applications 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 (UL/CSA STD.248-14)
Testing Current
100%
135%
200%
500%
1000%
Safety Agency Approvals
V
Listed File no. E20624
ß
Certified File no. LR39772
p
File no. JET1037-31003-1003
100mA.- 7A / 125V [email protected] 10,000A
100mA.- 7A / 250V [email protected] 200A
Typical
Volt-drop Melting I2T Melting I2T Peak Surge Current (Amp) Maximum
Power
Cold
@10 In
@100% In < 10 mSec
(fig B)
(Fig A)
Dissipation
Resistance
50 Pulses
25 Pulses
2
2
(A Sec) 10uS x 1000uS 10uS x 560uS
(W)
(ohm)
(Volt) max. (A Sec)
MJS 100
100mA
11.00
1.55
0.068
0.088
4.5
6.0
0.22
MJS 125
125mA
7.62
1.35
0.11
0.14
5.6
7.5
0.24
MJS 150
150mA
5.28
1.17
0.17
0.22
6.8
9.0
0.27
MJS 200
200mA
3.66
1.02
0.26
0.34
9
12
0.30
MJS 250
250mA
2.54
0.89
0.41
0.53
12
16
0.34
MJS 350
350mA
1.46
0.72
0.80
1.03
18
24
0.40
MJS 400
400mA
1.22
0.67
0.99
1.29
20
27
0.42
MJS 500
500mA
0.84
0.59
2
2
26
35
0.47
MJS 700
700mA
0.525
0.49
3
4
38
50
0.54
MJS 750
750mA
0.487
0.48
3
4
38
50
0.55
1A
0.281
0.39
6
8
56
75
0.64
MJS 1.25
1.25A
0.195
0.34
9
12
75
100
0.71
MJS 1.5
1.5A
0.135
0.29
14
19
94
125
0.80
MJS 2
MJS 2.5
MJS 3
2A
0.094
0.26
23
30
120
160
0.89
2.5A
0.065
0.22
35
47
150
200
0.99
3A
0.045
0.19
55
73
195
260
1.10
3.5A
0.037
0.18
69
91
225
300
1.16
MJS 4
4A
0.031
0.17
86
114
255
340
1.22
MJS 5
5A
0.022
0.15
135
179
330
440
1.40
MJS 6
6A
0.015
0.13
211
279
428
570
1.50
MJS 7
7A
0.012
0.12
263
350
488
650
1.60
MJS 3.5
Vßpc
Amp range / Volt @ I.R. ability
Ampere
Rating
MJS 1
Blow Time
Minimum
Maximum
4 Hrs.
N/A
N/A
1 Hr
3 sec
20 sec
100 msec
1.5 sec
30 msec
300 msec
Approvals
mCatalog
Number
Consult manufacturer for other ratings
FIG A
1A.- 5A / 125V [email protected] 500A
FIG B
Power Cross Rating
600V ac, 40A
Operating Temperature
-55ºC to +125ºC
See P.4 for explanation of Peak Surge Current Withstand
Mechanical Dimensions
Physical Specification
Marking
On fuse: “bel”, “MJS”, “Current Rating”, “250V” &
“Appropriate Safety Logos”
On label: Above info plus “c” and interrupting rating
0.217"±0.004"
(5.5±0.1mm)
SEE LEAD SIZE IN “MATERIAL”
MJS
0.710"±0.080"
(18.0±2.0mm)
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
0.590"±0.020"
(1.5±1.0mm)
0.244"±0.008"
(6.2±0.2mm)
WITH INSULATION SLEEVE
Specifications subject to change without notice
0.59"±0.02"
1.50"±0.08"
(38.1±2.0mm) (15.0±0.5mm)
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
ORDERING INFORMATION SEE PAGES 67 & 68
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel: 201-432-0463 • Fax: 201-432-9542 • E-Mail: [email protected]
Website: www.belfuse.com
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5 x 15mm Glass Tube
Type MJS
Lightning Surge Withstand Fuse
MJSC0801
3A
3.5A
4A
5A
6A
7A
-
- 400mA
- 500mA
- 700mA
- 750mA
- 1A
- 1.25A
- 1.5A
- 2A
- 2.5A
- 250mA
- 350mA
- 150mA
- 200mA
- 100mA
- 125mA
MJS - TIME CURRENT CHARACTERISTIC CURVE
10000
TIME IN SECONDS
1000
100
10
0.1
0.01
0.01
0.1
1
10
100
1000
CURRENT IN AMPERES
Specifications subject to change without notice
1
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: [email protected]
Website: www.belfuse.com
Far East Office
Bel Fuse Ltd.
8F/8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel: 852-2328-5515
Fax: 852-2352-3706
European Office
Bel Fuse Europe Ltd.
Preston Technology Management Centre
Marsh Lane, Preston PR1 8UD
Lancashire, U.K
Tel: 44-1772-556601
Fax: 44-1772-888366
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