Technical Data
2004
Effective
June
2017
Supersedes
February
2009
MDL
1/4” x 1 1/4” Time-delay glass tube fuses
Agency information
•
•
•
•
UL Listed Card: MDL 1/16 - 8A (Guide JDYX, File E19180)
UL Recognized Card: MDL 9 - 30A (Guide JDYX2, File E19180)
CSA Certification Card: MDL 1/16 - 8A (Class No. 1422-01)
CSA Component Acceptance: MDL 9-30A
(Class No. 1422-30)
•
CE
Ordering
Product features
•
•
•
•
•
Time-delay
Optional axial leads available
1⁄4 x 1 1⁄4 (6.4 x 31.7mm) physical size
Glass tube, nickel-plated brass endcap construction
UL Listed product meets standard 248-14
•
•
•
•
•
•
Environmental data
•
Shock: 1A thru 30A – MIL-STD-202, Method 207, (HI
Shock)
•
Vibration: 1/4A thru 30A – MIL-STD-202, Method 204,
Test Condition C (Except 5g, 500HZ)
Part
Number
Voltage
Rating
Vac
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
32
32
32
32
32
32
Specify packaging code
Insert packaging code prefix before part number. E.g., BK (or
BK1)-MDL-5-R
Specify option codes if desired
For axial leads, insert “V” between catalog series and amp
rating. E.g., BK-MDL-V-5-R
For board washable, insert “B” between catalog series and
amp rating. E.g., BK-MDL-B-5-R
For axial leads and board washable, insert “B” then “V”
between catalog series and amp rating. E.g., BK-MDL-BV-5-R
Speci cations
AC Interrupting Rating* (amps)@
250Vac
125Vac
32Vac
35
35
35
35
35
35
35
35
35
35
35
100
100
100
100
100
100
200
200
200
200
200
200
-
-
-
-
-
-
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1000
1000
1000
1000
1000
1000
MDL-1/16-R
MDL-1/10-R
MDL-1/8-R
MDL-3/16-R
MDL-2/10-R
MDL-1/4-R
MDL-3/10-R
MDL-3/8-R
MDL-1/2-R
MDL-3/4-R
MDL-1-R
MDL-1-1/4-R
MDL-1-1/2-R
MDL-2-R
MDL-2-1/4-R
MDL-2-1/2-R
MDL-3-R
MDL-4-R
MDL-5-R
MDL-6-R
MDL-6-1/4-R
MDL-7-R
MDL-8-R
MDL-9-R
MDL-10-R
MDL-15-R
MDL-20-R
MDL-25††
MDL-30††
Typical DC Cold
Resistance**
(Ω)
45.6
15.68
12.238
4.81
5.234
3.208
2.046
1.567
0.943
0.397
0.273
0.205
0.156
0.116
0.096
0.081
0.057
0.038
0.025
0.022
0.02
0.018
0.015
0.012
0.01
0.005
0.004
0.01225
0.0011
Typical
Melting I
2
t†
AC
0.0046
0.0420
0.0422
0.116
0.314
0.447
0.412
0.982
1.656
4.343
11.498
86.2
22.7
62.3
49.6
63.1
67.5
19.3
32.0
37.4
38.7
42.7
47.8
51.5
64.4
354.0
2914.0
15221.0
15581.0
Typical
Voltage
Drop‡
2.79
1.95
1.52
1.05
0.972
0.965
0.808
1.46
1.27
1.01
0.995
0.722
0.721
0.644
0.535
0.410
0.345
0.187
0.160
0.155
0.152
0.140
0.119
0.124
0.114
0.130
0.530
0.30
0.40
* Interrupting Ratings (Interrupting ratings were measured at 70% - 80% power factor on AC)
** DC Cold Resistance (Measured at ≤10% of rated current)
† Typical Melting I
2
t (A
2
Sec) (I
2
t was measured at listed interrupting rating and rated voltage.)
‡ Typical Voltage Drop (Voltage drop was measured at 25°C±3°C ambient temperature at rated current)
†† MDL-25 & MDL-30 not available in RoHS compliant construction.
Technical Data
2004
Effective
June
2017
MDL
1/4” x 1 1/4” Time-delay glass tube fuses
Time-Current Curve
Dimensions - mm
(in)
Drawing Not to Scale
38.10
(1.500)
32.82
(1.292)
38.10
(1.500)
Current in Amps
6.76
(0.266)
DIA. OF LEADS
0.81
0–15 AMP:
(0.032)
20–30 AMP: 1.02
(0.040)
31.75
(1.250)
6.35
(0.250)
Time in Seconds
Time in Seconds
Current in Amps
Packaging Code
BK
BK1
BK8
Description
100 fuses packed into a cardboard carton
1,000 fuses packed into a cardboard carton
8,000 fuses packed into a cardboard carton
Packaging Code
Option Code
B
V
Description
Sealed to withstand aqueous cleaning
(Board
Washable)
Axial leads - copper tinned wire with nickel plated brass overcaps
Option Code
Life Support Policy: Eaton does not authorize the use of any of its products for use in life support devices or systems without the express written
approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when properly
used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user.
Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also
reserves the right to change or update, without notice, any technical information contained in this bulletin.
Eaton
Electronics Division
1000 Eaton Boulevard
Cleveland, OH 44122
United States
www.eaton.com/electronics
© 2017 Eaton
All Rights Reserved
Printed in USA
Publication No. 2004
SB-BU08675
June
2017
Eaton is a registered trademark.
All other trademarks are property
of their respective owners.
51mcu
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