Effective July 2017 Supersedes June 2017 Technical Data 2002 MDA 1/4" x 1 1/4" Time-delay ceramic tube fuses Agency information * UL Listed Card: MDA 1/4 - 20 A (Guide JDYX, File E19180) * UL Recognized Card: MDA 25 - 30 A (Guide JDYX2, File E19180) * CSA Certification Card: MDA 1/4 - 20 A (Class No. 1422-01) * CSA Component Acceptance: MDA 25-30 A (Class No. 1422-30) Environmental data * Product features * * * * * * Time-delay Optional axial leads available 1/4" x 1-1/4" (6.35 x 31.75 mm) physical size Ceramic tube, nickel-plated brass endcap construction UL Listed product meets standard 248-14 Ordering * Rated Current 1/4 - 30 A Shock: 1 A thru 30 A - MIL-STD-202, Method 213, Test Condition J Vibration: 1/4 A thru 30 A - MIL-STD-202, Method 204, Test Condition C (Except 5 g, 500 Hz) Specify packaging, product and option code. Electrical Characteristics Amp Rating Opening Time 100% None 135% 60 minutes Max. 200% 120 seconds Max. Specifications Part Number MDA-1/4-R MDA-1/2-R MDA-3/4-R MDA-1-R MDA-1-1/2-R MDA-2-R MDA-2-1/2-R MDA-3-R MDA-4-R MDA-5-R MDA-6-R MDA-7-R MDA-8-R MDA-10-R MDA-12-R MDA-15-R MDA-20-R MDA-25-R MDA-30-R Voltage Rating Vac Vdc 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 250 125 250 125 250 125 AC Interrupting Rating* (A) 250 V 125 V 35 10000 35 10000 35 10000 35 10000 100 10000 100 10000 200 10000 200 10000 200 10000 200 10000 200 10000 200 10000 200 10000 200 10000 750 10000 750 10000 1500 10000 1500 10000 1500 10000 DC Interrupting Rating (A) 125 V 10000 10000 10000 Typical DC Cold Resistance** () 8.7 1.78 0.82 0.56 0.2565 0.17 0.068 0.0525 0.03575 0.0256 0.02035 0.0165 0.013 0.00925 0.00755 0.00565 0.004065 0.0031 0.002465 Typical Typical Voltage Drop Melting I2t AC 0.748 4.00 2.53 1.42 8.58 1.31 12.21 1.03 27.5 0.691 70.4 0.623 31.79 0.213 44.99 0.182 147.4 0.162 380.49 0.145 587.73 0.141 638.33 0.137 1038.4 0.134 1620.43 0.135 125.18 0.128 336.82 0.107 483.45 0.095 734.69 0.105 1096.7 0.110 * Interrupting Ratings (Measured at 70% - 80% power factor on AC. The interrupting ratings for 25 A, 30 A were measured at 90% - 100% power factor on AC) ** DC Cold Resistance (Measured at _<10% of rated current) Typical Melting I2t (A2sec) (I2t was measured at listed interrupting rating and rated voltage) Typical Voltage Drop (Voltage drop was measured at +25 C ambient temperature at rated current) MDA 1/4" x 1 1/4" Time-delay ceramic tube fuses Technical Data 2002 Effective July 2017 Time-Current Curves (7 A - 30 A) Time-Current Curves (1/4 A - 6 1/4 A) Dimensions - mm (in) Drawing Not to Scale 32.82 (1.292) 38.10 (1.500) 6.76 (0.266) DIA. OF LEADS 0.81 (0.032) 1.02 20-30 AMP: (0.040) 0-15 AMP: 31.75 (1.250) Packaging Code Prefix BK- Option Code B V 38.10 (1.500) 6.35 (0.250) Packaging Code Description 100 fuses packed into a cardboard carton Option Code Description Sealed to withstand aqueous cleaning (Board Washable) 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 (c) 2017 Eaton All Rights Reserved Printed in USA Publication No. 2002 BU-SB11875 July 2017 Eaton is a registered trademark. All other trademarks are property of their respective owners.