1/4" x 1-1/4" Fuses
MDA Series, Time Delay, Ceramic Tube
Description
• Time Delay, ceramic tube
• Optional axial leads available
• 1/4 x 1-1/4 (6.3mm x 32mm) physical size
• Ceramic tube, nickel-plated brass endcap construction
• UL Listed product meets standard 248-14
ELECTRICAL CHARACTERISTICS
Amp Rating
Opening Time
Rated Current
None
100%
1/4 - 30A
135%
60 Minutes Max.
200%
120 Seconds Max.
Agency Information
• UL Listed Card: MDA 2/10 - 20A (Guide JDYX,
File E19180)
• UL Recognized Card: MDA 25 - 30A (Guide JDYX2,
File E19180)
• CSA Certification Card: MDA 2/10 - 15
(Class No. 1422-01)
• CSA Component Acceptance: MDA 20-30A
(Class No. 1422-30)
Environmental Data
• Shock: 1/100A and 8/10A – MIL-STD-202,
Method 213, Test Condition I;
1A thru 30A – MIL-STD-202, Method 207,
(HI Shock)
• Vibration: 1/100A and 8/10A – MIL-STD-202,
Method 201; 1/4A thru 30A – MIL-STD-202,
Method 204, Test Condition C (Except 5g, 500HZ)
Ordering
• Specify packaging, product, and option code
RoHS
2002/95/EC
Dimensions (mm⁄in)
Drawing Not to Scale
SPECIFICATIONS
Product
Code
MDA-1/4
MDA-1/2
MDA-3/4
MDA-1
MDA-1-1/2
MDA-2
MDA-2-1/2
MDA-3
MDA-4
MDA-5
MDA-6
MDA-7
MDA-8
MDA-10
MDA-12
MDA-15
MDA-20
MDA-25A
MDA-30A
*
**
†
‡
Voltage
Rating
AC
DC
250V
250V
250V
250V
250V
250V
250V
250V
250V
250V
250V
250V
250V
250V
250V
250V
250V
125V
250V
125V
250V
125V
AC Interrupting
Rating*
250V
125V
35A
10000A
35A
10000A
35A
10000A
35A
10000A
100A
10000A
100A
10000A
200A
10000A
200A
10000A
200A
10000A
200A
10000A
200A
10000A
200A
10000A
200A
10000A
200A
10000A
750A
10000A
10000A
750A
1500A
10000A
1500A
10000A
1500A
10000A
DC Interrupting
Rating
125V
10000A
10000A
10000A
Typical DC Cold
Resistance**
(ohms)
9.325
1.925
0.8555
0.560
0.2585
0.1645
0.06685
0.0507
0.0346
0.02355
0.01850
0.01475
0.01230
0.00858
0.00725
0.00543
0.00358
0.00309
0.00243
Typical
Melting I2t†
AC
0.68
2.3
7.8
11.1
25.0
64.0
28.9
40.9
134.0
345.9
534.3
580.3
944.0
1491.3
113.8
206.2
439.5
667.9
997.0
Typical
Voltage
Drop‡
4.00
1.42
1.31
1.03
0.691
0.623
0.213
0.182
0.162
0.145
0.141
0.137
0.134
N/A
0.114
0.107
0.095
0.105
0.110
Interrupting Ratings (Measured at 70% - 80% power factor on AC. The interrupting ratings for 25Amp, 30Amp 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)
