MDA-7

**Bussmann[®]** 

## **Time-Delay Ceramic Fuses For ⁄Ω¢∑ ≈ 1⁄Ω¢∑ (6.3mm ≈ 32mm)** 

## **MDA MDA-V** 

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Dimensional Data<br>| 6.35mm 38.10mm<br>.25" 1.500"<br>(REF)<br>6.76mm<br>.266"<br>. ' Hi |<br>31.85mm 32.82mm (± .79)<br>1.25" 1.292" (± .031)<br>14 | i (±0.031)<br>38.10mm<br>1.500"<br>Catalog Symbol: | MDA (3AB) CD (REF)<br>Time-Delay =| 0–15 Amp:               (REF) .81mm.032"<br>Agency Approvals*:  6.35mm.25" 20–30 Amp:                (REF) 1.02mm.040"<br>U.L./CSA 248-14 (±0.003)<br>**----- End of picture text -----**<br>


**Construction:** Ceramic Tube Nickel Plated Brass Endcaps 

## **Packaging & Ordering Information:** 

|**Packaging & Ordering Information:**|||
|---|---|---|
|**MDA**<br>**V**<br>–<br>–|**(See Table)**||
|**Time-Current Characteristics**<br>**Rated**<br>**Percent of Rating**<br>**Package Code**<br>**Product**<br>**Lead**<br>**Blank**5 in<br>**Symbol**<br>**Blank-no lead**<br>**BK/**100 in<br>**V-Axial lead**<br>**Weight = .97 lbs/100**|**Rated Current**||
|**Current**<br>**110%**<br>**135%**<br>~~a~~|**200%**<br>~~a~~|~~a~~|
|¤Ω¡º-30<br>4 hrs.(min)<br>60 min.(max)<br>~~a~~|120 sec.(max)<br>~~a~~||



## **Time-Current Characteristics** 

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Time-Current Characteristic Curves–<br>Average Melt (Full Size Curves Available)<br>AMPERE<br>RATING<br>100<br>x 3 <s<br>PETIA UA<br>10 STEERS<br>I TI AT<br>1<br>PAM AINE AMIE ET<br>.1<br>EE A ATAU<br>.01 PET THINE EELTNIN INCLINETI<br>CURRENT IN AMPERES<br>1 2 3 56 10 15 25 30<br>TIME IN SECONDS<br>.1 1 10 100 1,000<br>**----- End of picture text -----**<br>


CE logo denotes compliance with European Union Low Voltage Directive (50-1000 Vac, 75-1500 Vdc). Refer to BIF document #8002 or contact Bussmann Application Engineering at 636-527-1270 for more information. 

## **Electrical Characteristics** 

|**Rated**<br>**Current5**|**Rated**<br>**Voltage6**|**Rated**<br>**Voltage6**|**Interrupting**<br>**Rating1,4,7**|**Interrupting**<br>**Rating1,4,7**|**Pre-arcing**<br>**I2t (A2Sec)**|**Pre-arcing**<br>**I2t (A2Sec)**|**Typical Total Clearing3**<br>**I2t (A2Sec)**|**Typical Total Clearing3**<br>**I2t (A2Sec)**|**Typical Voltage**<br>**Drop2 Volts at**<br>**100% Rated**<br>**Current**<br>~~eee~~|**Agency***<br>**Approvals**|
|---|---|---|---|---|---|---|---|---|---|---|
|||||||||||**U.L.**<br>**UR**<br>**CSA**|
||**AC(Max.)**<br>~~ee~~|**DC(Max.)**<br>~~ee~~|**AC**<br>~~ee~~|**DC**<br>~~ee~~|**AC**<br>~~ee~~|**DC**<br>~~eee~~|**AC**<br>~~eee~~|**DC**<br>~~eee~~|||
|¤Ω¡º<br>⁄Ω¢<br>⁄Ω™|250V<br>250V<br>250V<br>~~ee~~|250V<br>250V<br>250V<br>~~ee~~|35A<br>35A<br>35A<br>~~ee~~|35A<br>35A<br>35A<br>~~ee~~|.44<br>.50<br>1.67<br>~~ee~~|.40<br>.56<br>4.34<br>~~eee~~|.28<br>.70<br>2.25<br>~~eee~~|2.57<br>.57<br>4.64<br>~~eee~~|1.78<br>3.41<br>1.51<br>~~eee~~|•<br>•<br>•<br>•<br>•<br>•|
|‹Ω¢<br>1<br>1⁄Ω™|250V<br>250V<br>250V<br>~~ee~~|250V<br>250V<br>~~ee~~|35A<br>35A<br>100A<br>~~ee~~|35A<br>35A<br>~~ee~~|5.21<br>10.08<br>24.50<br>~~ee ~~|6.55<br>8.71<br> ~~eee~~|6.80<br>12.53<br>30.00<br>~~eee~~|6.83<br>10.28<br>~~eee~~|1.02<br>.96<br>.70<br>~~eee~~|•<br>•<br>•<br>•<br>•<br>•|
|2<br>2⁄Ω™<br>3|250V<br>250V<br>250V|250V|100A<br>100A<br>100A|100A|36.53<br>27.40<br>35.70|24.95|73.43<br>36.95<br>144.00|73.55|.58<br>.23<br>.22|•<br>•<br>•<br>•<br>•<br>•|
|4<br>5<br>6|250V<br>250V<br>250V||200A<br>200A<br>200A||141.50<br>310.00<br>534.30||165.90<br>368.30<br>567.20||.18<br>.17<br>.16|•<br>•<br>•<br>•<br>•<br>•|
|7<br>8<br>10|250V<br>250V<br>250V|250V|200A<br>200A<br>200A|200A|591.30<br>898.20<br>843.00|1515.00|364.00<br>906.10<br>924.50|1661.00|.15<br>.13<br>.12|•<br>•<br>•<br>•<br>•<br>•|
|15<br>20<br>25|250V<br>250V<br>250V<br>~~es~~|250V<br>~~ss~~|750<br>1500<br>1500<br>~~ss~~|~~ss(nD~~|238.10<br>582.00<br>1097.00<br>~~(nD~~|216.90<br>~~(nD(OO~~|359.70<br>761.00<br>1410.00<br>~~(OO~~|299.90<br>~~GO~~|.13<br>.13<br>.13|•<br>•<br>•<br>•|
|30|250V<br>~~es~~|~~ss~~|1500<br>~~ss~~|~~ss(nD~~|1565.00<br>~~(nD~~|~~(nD(OO~~|2064.00<br>~~(OO~~|~~GO~~|.14|•|



- [Approvals: U.L. Listed, Std. 248-14, Guide JDYX, File E19180; CSA Certification, Class 1422-01, File 53787.] 

1. Interrupting ratings for ⁄Ω£™-2VA were measured at 70% - 80% power factor on AC, and at a time constant described in U.L. 198L. 

2. Voltage drop was measured at 25°C[±] 3°C ambient temperature at rated current. 

3. I[2] t was measured at listed interrupting rating and rated voltage. 

4. Interrupting rating for MDA ⁄Ω£™-30A @ 125 Vac is 10,000A. Interrupting rating listed corresponds to maximum rated voltage. 

5. Other available sizes include ⁄Ω£™, ⁄Ω¡§, ⁄Ω¡º, ⁄Ω•, ⁄fiΩ¡ºº, ‹Ω¡º, ‹Ω•, ›Ω¡º, flΩ¡º, °Ω¡º, 1⁄Ω¢, 1flΩ¡º, 2°Ω¡º, 3¤Ω¡º, 4⁄Ω™, 6⁄Ω¢, and 12. 

6. DC ratings are self certified. 

7. Interrupting ratings for 25A, 30A were measured at 90%-100% power factor on AC. 

Form No. MDA Page 1 of 2 BIF Doc #2002 

2-18-00 N00012 Rev. A 

**Bussmann[®]** 

**Time-Delay Ceramic Fuses For ⁄Ω¢∑ ≈ 1⁄Ω¢∑ (6.3mm ≈ 32mm)** 

## **MDA MDA-V** 

## **1.0 Typical Voltage Drop (At 25° C Ambient Temperature)** 

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1.6 .25<br>1.4 MDA  ⁄Ω™� MDA 2 ⁄Ω™�<br>1.2 .2 MDA 3<br>MDA 4<br>1.0 MDA  ‹Ω¢� .15 MDA 5<br>0.8 MDA 1 MDA 6<br>MDA 7<br>0.6 MDA 1 ⁄Ω™� .1<br>MDA 2<br>0.4<br>.05<br>0.2<br>0 0<br>5% 25% 50% 75% 100% 5% 25% 50% 75% 100%<br>PERCENT OF RATED CURRENT PERCENT OF RATED CURRENT<br>.14 .14<br>MDA 8<br>.12 MDA 15 .12 MDA  30<br>MDA 10 MDA  20<br>.1 .1 MDA  25<br>.08 .08<br>.06 .06<br>.4 .04<br>.02 .02<br>0 0<br>5% 25% 50% 75% 100% 5% 25% 50% 75% 100%<br>PERCENT OF RATED CURRENT PERCENT OF RATED CURRENT<br>2.0 Ambient Temperature Effect Chart (Derating Curve)<br>120.5<br>110.5<br>100.5<br>90.5<br>80.5<br>70.5<br>60.5<br>-60 -40 -20 0 20 40 60 80 100<br>AMBIENT TEMPERATURE ¡C<br>VOLTAGE DROP VOLTAGE DROP<br>VOLTAGE DROP VOLTAGE DROP<br>PERCENTAGE OF RATED CURRENT<br>**----- End of picture text -----**<br>


The only controlled copy of this BIF document is the electronic read-only version located on the Bussmann Network Drive. All other copies of this document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Bussmann also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications. 

Form No. MDA 

2-18-00 N00012 Rev. A 

Page 2 of 2 BIF Doc #2002