Effective June 2017 Technical Data 2002 Supersedes July 2011 MDA 1/4 x 1 1/4 Time-delay ceramic tube fuses 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 213, Test Product features Condition J Vibration: 1/100A and 8/10A MIL-STD-202, Method 201 Time-delay 1/4A thru 30A MIL-STD-202, Method 204, Test Condition Optional axial leads available C (Except 5g, 500Hz) 1/4 x 1-1/4 (6.35 x 31.75mm) physical size Ceramic tube, nickel-plated brass endcap construction Ordering UL Listed product meets standard 248-14 Specify packaging, product and option code. Electrical Characteristics Rated Current Amp Rating Opening Time 100% None 1/4 - 30A 135% 60 Minutes Max. 200% 120 Seconds Max. Specifications AC Interrupting Part Voltage Rating Rating* (A) DC Interrupting Typical DC Cold Typical Typical Voltage 2 Rating (A) 125V Number Vac Vdc 250V 125V Resistance** () Melting I 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) 2 2 Typical Melting I t (A2Sec) (I t was measured at listed interrupting rating and rated voltage) Typical Voltage Drop (Voltage drop was measured at 25C ambient temperature at rated current)T IME IN S E C O NDS MDA Technical Data 2002 Effective June 2017 1/4 x 1 1/4 Time-delay ceramic tube fuses Time-Current Curves Dimensions - mm (in) CURRENT IN AMPS Drawing Not to Scale 38.10 32.82 38.10 (1.500) (1.292) (1.500) 6.76 DIA. OF LEADS (0.266) 0.81 015 AMP: (0.032) 1.02 2030 AMP: (0.040) 31.75 6.35 (1.250) (0.250) CURRENT IN AMPS Packaging Code Packaging Code Pre x Description BK- 100 fuses packed into a cardboard carton BK1- 1,000 fuses packed into a cardboard carton BK8- 8,000 fuses packed into a cardboard carton Option Code Option Code Description B Sealed to withstand aqueous cleaning (Board Washable) V Axial leads - copper tinned wire with nickel plated brass overcaps Life Support Policy: Eaton does not authorize the use of any of its products for use in life support devices or systems without the express written approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also reserves the right to change or update, without notice, any technical information contained in this bulletin. Eaton Electronics Division 1000 Eaton Boulevard Cleveland, OH 44122 United States www.eaton.com/electronics 2017 Eaton Eaton is a registered trademark. All Rights Reserved Printed in USA All other trademarks are property Publication No. 2002 BU-SB11875 of their respective owners. June 2017 T IME IN S E C O NDS 1/4 1/2 1 2 3-2/10 4 5 6-1/4 10 12 15 20 25 30