Technical Data 2002
Effective August 2020
Supersedes July 2017
Product features
Agency information
•UL Listed Card: MDA 1/4 - 20 A (Guide JDYX, File E19180)
•UL Recognized Card: MDA 25 - 30 A (Guide JDYX2, File
E19180)
•CSA Certification Card: MDA 1/4 - 20 A (Class No. 1422-01)
•CSA Component Acceptance: MDA 25 - 30 A (Class No.
1422-30)
General specifications
•Shock: 1 A thru 30 A – MIL-STD-202, Method 213, Test
Condition J
•Vibration: 1/4 A thru 30 A – MIL-STD-202, Method 204, Test
Condition C (Except 5 g, 500 Hz)
MDA
1/4” x 1 1/4” Time-delay ceramic tube fuses
•Time-delay
•Optional axial leads available
•1/4” x 1-1/4” (6.35 x 31.75 mm) physical size
•Ceramic tube, nickel-plated brass endcap construction
•UL Listed product meets standard 248-14 Ordering
•Specify packaging code prefix, part number and and option
code. Replace the "/" with a "-" (i.e. BK-MDA-BV-1-4-R)
Specifications
AC interrupting
Part Voltage rating rating* (A)DC interrupting
rating (A) 125 VTypical DC cold Typical Typical voltage
number Vac Vdc 250 V 125 Vresistance** (Ω) melting I2t† AC drop‡
MDA-1/4-R 250 - 35 10000 - 8.7 0.748 4.00
MDA-1/2-R 250 - 35 10000 - 1.78 2.53 1.42
MDA-3/4-R 250 - 35 10000 - 0.82 8.58 1.31
MDA-1-R 250 - 35 10000 - 0.56 12.21 1.03
MDA-1-1/2-R 250 - 100 10000 - 0.2565 27.5 0.691
MDA-2-R 250 - 100 10000 - 0.17 70.4 0.623
MDA-2-1/2-R 250 200 10000 0.068 31.79 0.213
MDA-3-R 250 200 10000 0.0525 44.99 0.182
MDA-4-R 250 200 10000 0.03575 147.4 0.162
MDA-5-R 250 200 10000 0.0256 380.49 0.145
MDA-6-R 250 200 10000 0.02035 587.73 0.141
MDA-7-R 250 200 10000 0.0165 638.33 0.137
MDA-8-R 250 200 10000 0.013 1038.4 0.134
MDA-10-R 250 200 10000 0.00925 1620.43 0.135
MDA-12-R 250 750 10000 0.00755 125.18 0.128
MDA-15-R 250 750 10000 0.00565 336.82 0.107
MDA-20-R 250 125 1500 10000 10000 0.004065 483.45 0.095
MDA-25-R 250 125 1500 10000 10000 0.0031 734.69 0.105
MDA-30-R 250 125 1500 10000 10000 0.002465 1096.7 0.110
* Interrupting ratings (Measured at 70% - 80% power factor on AC. The interrupting ratings for 25 A, 30 A were measured at 90% - 100% power factor on AC)
** DC Cold resistance (Measured at _<10% of rated current)
† Typical melting I2t (A2sec) (I2t was measured at listed interrupting rating and rated voltage)
‡ Typical voltage drop (Voltage drop was measured at +25 °C ambient temperature at rated current)
Electrical characteristics
Rated current Amp rating Opening time
100% None
1/4 - 30 A135% 60 minutes max.
200% 120 seconds max.
HALOGEN
HF
FREE
Pb
125
125
125
125
125
125
125
125
125
125
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
© 2020 Eaton
All Rights Reserved
Printed in USA
Publication No. 2002
August 2020
MDA
1/4” x 1 1/4” Time-delay ceramic tube fuses
Technical Data 2002
Effective August 2020
Dimensions - mm (in)
Drawing Not to Scale
38.10 32.82 38.10
(1.500) (1.292) (1.500)
6.76 DIA. OF LEADS
(0.266)
0–15 AMP: 0.81
(0.032)
20–30 AMP: 1.02
(0.040)
31.75 6.35
(1.250) (0.250)
Time-current curves (1/4 A - 6 1/4 A)
Packaging code
Packaging code pref ix
Description
BK-100 fuses packed into a cardboard carton
Option code
Option code
Description
B
Sealed to withstand aqueous cleaning (Board washable)
VAxial leads - copper tinned wire with nickel plated brass overcaps
Time-current curves (7 A - 30 A)
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.
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Electronics Division
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Cleveland, OH 44122
United States
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