MDA-3-R

## **1/4" x 1-1/4" Fuses MDA Series, Time Delay, Ceramic Tube** 

## **Description** 

- Time Delay, ceramic tube 

- Optional leaded version 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**|**ELECTRICAL CHARACTERISTICS**|**ELECTRICAL CHARACTERISTICS**|
|---|---|---|
|**Rated Current**|**Amp Rating**|**Opening Time**|
|1/4 - 30A|**Amp Rating**<br>100%|**Opening Time**<br>None|
||135%|60 Minutes Max.|
||200%|120 Seconds Max.|



## **Approvals** 

## **Dimensions** ([mm] ⁄in) 

Drawing Not to Scale 

- 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) 

## **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 product code, option code and packaging code 

|**SPECIFICATIONS**<br>**Product**<br>**Voltage**<br>**AC Interrupting**<br>**DC Interrupting**<br>**Typical DC Cold**<br>**Typical**<br>**Typical**<br>**Code**<br>**Rating**<br>**Rating***<br>**Rating**<br>**Resistance****<br>**Melting I2t†**<br>**Voltage**<br>**AC**<br>**DC**<br>**250V**<br>**125V**<br>**125V**<br>**(ohms)**<br>**AC**<br>**Drop‡**<br>**MDA-1/4**<br>250V<br>-<br>35A<br>10000A<br>-<br>9.325<br>0.68<br>4.00<br>**MDA-1/2**<br>250V<br>-<br>35A<br>10000A<br>-<br>1.925<br>2.3<br>1.42<br>**MDA-3/4**<br>250V<br>-<br>35A<br>10000A<br>-<br>0.8555<br>7.8<br>1.31<br>**MDA-1**<br>250V<br>-<br>35A<br>10000A<br>-<br>0.560<br>11.1<br>1.03<br>**MDA-1-1/2**<br>250V<br>-<br>100A<br>10000A<br>-<br>0.2585<br>25.0<br>0.691<br>CO<br>~~eseG~~<br>~~GO~~<br>~~RseG~~<br>~~eG~~<br>~~es~~~~**ee** ~~~~**e**G~~<br>~~GO~~<br>~~es~~<br>~~**G**~~<br>~~O~~<br>~~ee~~<br>~~Ge~~|
|---|
|**MDA-2**<br>250V<br>-<br>100A<br>10000A<br>-<br>0.1645<br>64.0<br>0.623<br>~~eeGG~~|
|**MDA-2-1/2**<br>250V<br>-<br>200A<br>10000A<br>-<br>0.06685<br>28.9<br>0.213<br>~~eeGQ~~|
|**MDA-3**<br>250V<br>-<br>200A<br>10000A<br>-<br>0.0507<br>40.9<br>0.182<br>~~eeDQ~~|
|**MDA-4**<br>250V<br>-<br>200A<br>10000A<br>-<br>0.0346<br>134.0<br>0.162<br>**MDA-5**<br>250V<br>-<br>200A<br>10000A<br>-<br>0.02355<br>345.9<br>0.145<br>**MDA-6**<br>250V<br>-<br>200A<br>10000A<br>-<br>0.01850<br>534.3<br>0.141<br>**MDA-7**<br>250V<br>-<br>200A<br>10000A<br>-<br>0.01475<br>580.3<br>0.137<br>**MDA-8**<br>250V<br>-<br>200A<br>10000A<br>-<br>0.01230<br>944.0<br>0.134<br>**MDA-10**<br>250V<br>-<br>200A<br>10000A<br>-<br>0.00858<br>1491.3<br>N/A<br>**MDA-15**<br>250V<br>-<br>750A<br>10000A<br>-<br>0.00543<br>206.2<br>0.107<br>**MDA-20**<br>250V<br>125V<br>1500A<br>10000A<br>10000A<br>0.00405<br>439.5<br>0.095<br>**MDA-25**<br>250V<br>125V<br>1500A<br>10000A<br>10000A<br>0.00309<br>667.9<br>0.105<br>**MDA-30**<br>250V<br>125V<br>1500A<br>10000A<br>10000A<br>0.00243<br>997.0<br>0.110<br>~~ee~~<br>~~DQ~~<br>~~es~~<br>~~sDGR~~<br>~~Re~~<br>~~nDGO~~<br>~~sD~~<br>~~QDGO~~<br>~~RseG~~<br>~~GO~~<br>~~RseG~~<br>~~eG~~<br>~~es~~~~**ee** ~~~~**e**G~~<br>~~GO~~<br>~~es~~<br>~~**G**~~<br>~~O~~<br>~~ee~~<br>~~Ge~~<br>~~eeGDGG~~|



- 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 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) 

## **1/4" x 1-1/4" Fuses MDA Series, Time Delay, Ceramic Tube** 

## **TIME CURRENT CURVE** 

CURRENT  IN  AMPERES 

**==> picture [522 x 521] intentionally omitted <==**

**----- Start of picture text -----**<br>
CURRENT  IN  AMPERES<br>OPTION CODE<br>Option Code Description<br>B Board Washable - Hermetically sealed to withstand aqueous cleaning<br>V Axial leads - brass overcaps with copper and nickel flash, plated in tin lead<br>PACKAGING CODE<br>Packaging Code Description<br>BK 100 pieces of fuses packed into a cardboard carton with flaps folded<br>BK1 1,000 pieces of fuses packed into a cardboard carton with flaps folded<br>BK8 8,000 pieces of fuses packed into a cardboard carton with flaps folded<br>1/4 1/2 1 2 3-2/10 4 5 6-1/4 10 12 15 20 25 30<br>TIME  IN  SECONDS TIME  IN  SECONDS<br>**----- End of picture text -----**<br>


> OC-2545   10/01 **Visit us on the Web at www.cooperET.com** 

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