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˝ x 1 / ˝ Ceramic Tube Fuses
4
MDA Series, Time-Delay
Description
• Time-delay
• Optional axial leads available
• 1/4˝ x 1-1/4˝ (6.35 x 31.75mm) physical size
• Ceramic tube, nickel-plated brass endcap construction
• UL Listed product meets standard 248-14
Electrical Characteristics
Rated Current
Amp Rating
100%
Opening Time
None
1/4 - 30A
135%
60 Minutes Max.
120 Seconds Max.
Dimensions - mm (in)
200%
Drawing Not to Scale
Agency Information
32.82
(1.292)
38.10
(1.500)
38.10
(1.500)
• UL Listed Card: MDA 2/10 - 20A (Guide JDYX,
File E19180)
• UL Recognized Card: MDA 25 - 30A (Guide JDYX2,
File E19180)
6.76
(0.266)
DIA. OF LEADS
0.81
0–15 AMP:
(0.032)
• CSA Certification Card: MDA 2/10 - 20
(Class No. 1422-01)
• CSA Component Acceptance: MDA 25-30A
(Class No. 1422-30)
1.02
(0.040)
20–30 AMP:
Environmental Data
31.75
(1.250)
6.35
(0.250)
• Shock: 1/100A and 8/10A – MIL-STD-202,
Method 213, Test Condition I;
1A thru 30A – MIL-STD-202, Method 213,
Test Condition J
• 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
SPECIFICATIONS
Part
Voltage
Rating
AC Interrupting
Rating* (amps)
DC Interrupting
Typical DC Cold
Resistance**
(Ω)
Typical
Typical
Voltage
Drop‡
4.00
2
Number
Rating (amps)
Melting I t†
Vac
Vdc
250V
35
125V
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
125V
AC
0.748
2.53
MDA-1/4-R
MDA-1/2-R
MDA-3/4-R
MDA-1-R
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
-
-
9.325
-
35
-
1.925
1.42
-
35
-
0.8555
8.58
1.31
-
35
-
0.560
12.21
27.5
1.03
MDA-1-1/2-R
MDA-2-R
-
100
100
200
200
200
200
200
200
200
200
750
750
1500
1500
1500
-
0.2585
0.691
0.623
0.213
0.182
0.162
0.145
0.141
0.137
0.134
0.135
0.128
0.107
0.095
0.105
0.110
-
-
0.170
70.4
MDA-2-1/2-R
MDA-3-R
-
-
0.06685
0.05350
0.03625
0.02610
0.02120
0.01690
0.01350
0.00948
0.00725
0.00553
0.00400
0.00305
0.00243
31.79
44.99
147.4
380.49
587.73
638.33
1038.4
1620.43
125.18
336.82
483.45
734.69
1096.7
-
-
MDA-4-R
-
-
MDA-5-R
-
-
MDA-6-R
-
-
MDA-7-R
-
-
MDA-8-R
-
-
-
MDA-10-R
MDA-12-R
MDA-15-R
MDA-20-R
MDA-25A-R
MDA-30A-R
-
-
-
-
-
125
125
125
10000
10000
10000
*
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)
2
2
2
†
‡
Typical Melting I t (A Sec) (I t was measured at listed interrupting rating and rated voltage)
Typical Voltage Drop (Voltage drop was measured at 25°C ambient temperature at rated current)
0709 SB-BU09312
Page 1 of 2
Data Sheet 2002