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
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 - 20 (Class No. 1422-01)
• CSA Component Acceptance: MDA 25-30A (Class No. 1422-30)
0711 BU-SB11875 Page 1 of 2 Data Sheet 2002
Specifications
AC Interrupting
Part Voltage Rating Rating* (amps) DC Interrupting Typical DC Cold Typical Typical Voltage
Number Vac Vdc 250V 125V Rating (amps) 125V Resistance** (Ω) Melting I
2
t† 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-25A-R 250 125 1500 10000 10000 0.0031 734.69 0.105
MDA-30A-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 25A, 30A were measured at 90% - 100% 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 ambient temperature at rated current)
Electrical Characteristics
Rated Current Amp Rating Opening Time
100% None
1/4 - 30A 135% 60 Minutes Max.
200% 120 Seconds Max.
Ordering
• Specify packaging, product and option code.
DIA. OF LEADS
Environmental Data
• 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)
Dimensions - mm (in)
Drawing Not to Scale
1/4” x 1 1/4” Time-Delay Ceramic Tube Fuses
MDA Series
