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
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)
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
Dimensions (
mm
⁄in)
Drawing Not to Scale
SPECIFICATIONS
Product Voltage AC Interrupting DC Interrupting Typical DC Cold Typical Typical
Code Rating Rating* Rating Resistance** Melting I
2
t† Voltage
AC DC 250V 125V 125V (ohms) AC Drop‡
MDA-1/4 250V - 35A 10000A - 9.325 0.68 4.00
MDA-1/2 250V - 35A 10000A - 1.925 2.3 1.42
MDA-3/4 250V - 35A 10000A - 0.8555 7.8 1.31
MD
A-1
250V
-
35A 10000A
- 0.560 11.1 1.03
MDA-1-1/2 250V - 100A 10000A - 0.2585 25.0 0.691
MDA-2 250V - 100A 10000A - 0.1645 64.0 0.623
MDA-2-1/2 250V - 200A 10000A - 0.06685 28.9 0.213
MDA-3 250V - 200A 10000A - 0.0507 40.9 0.182
MDA-4 250V - 200A 10000A - 0.0346 134.0 0.162
MDA-5 250V - 200A 10000A - 0.02355 345.9 0.145
MDA-6 250V - 200A 10000A - 0.01850 534.3 0.141
MDA-7 250V - 200A 10000A - 0.01475 580.3 0.137
MD
A-8
250V
-
200A 10000A - 0.01230 944.0 0.134
MDA-10 250V - 200A 10000A - 0.00858 1491.3 N/A
MDA-12 250V - 750A 10000A - 0.00725 113.8 0.114
MDA-15 250V
-
750A
10000A
-
0.00543
206.2 0.107
MDA-20 250V 125V 1500A 10000A 10000A 0.00358 439.5 0.095
MDA-25A 250V 125V 1500A 10000A 10000A 0.00309 667.9 0.105
MDA-30A 250V 125V 1500A 10000A 10000A 0.00243 997.0 0.110
* Interrupting Ratings (Measured at 70% - 80% po
w
er f
actor on A
C. 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 I
2
t (A
2
Sec) (I
2
t was measured at listed interrupting rating and rated voltage)
‡ Typical Voltage Drop (V
oltage drop w
as measured at 25
°C ambient temperature at rated current)
ELECTRICAL CHARACTERISTICS
R
ated Current Amp Rating Opening Time
1
00% None
1/4 - 30A 135% 60 Minutes Max.
200% 120 Seconds Max.
1/4" x 1-1/4" Fuses
MDA Series, Time Delay, Ceramic Tube
