1 / 4 ? x 1 1 / 4 ? ceramic tube fuses mda series, time-delay 0709 sb-bu09312 page 1 of 2 data sheet 2002 description ? time-delay ? optional axial leads available ? 1/4? x 1-1/4? (6.35 x 31.75mm) 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 C mil-std-202, method 213, test condition i; 1a thru 30a C mil-std-202, method 213, test condition j ? vibration: 1/100a and 8/10a C mil-std-202, method 201; 1/4a thru 30a C mil-std-202, method 204, test condition c (except 5g, 500hz) dimensions - mm (in) drawing not to scale specifications part voltage ac interrupting dc interrupting typical dc cold typical typical number rating rating* (amps) rating (amps) resistance** melting i 2 t? voltage vac vdc 250v 125v 125v ( ) ac drop? mda-1/4-r 250 - 35 10000 - 9.325 0.748 4.00 mda-1/2-r 250 - 35 10000 - 1.925 2.53 1.42 mda-3/4-r 250 - 35 10000 - 0.8555 8.58 1.31 mda-1-r 250 - 35 10000 - 0.560 12.21 1.03 mda-1-1/2-r 250 - 100 10000 - 0.2585 27.5 0.691 mda-2-r 250 - 100 10000 - 0.170 70.4 0.623 mda-2-1/2-r 250 - 200 10000 - 0.06685 31.79 0.213 mda-3-r 250 - 200 10000 - 0.05350 44.99 0.182 mda-4-r 250 - 200 10000 - 0.03625 147.4 0.162 mda-5-r 250 - 200 10000 - 0.02610 380.49 0.145 mda-6-r 250 - 200 10000 - 0.02120 587.73 0.141 mda-7-r 250 - 200 10000 - 0.01690 638.33 0.137 mda-8-r 250 - 200 10000 - 0.01350 1038.4 0.134 mda-10-r 250 - 200 10000 - 0.00948 1620.43 0.135 mda-12-r 250 - 750 10000 - 0.00725 125.18 0.128 mda-15-r 250 - 750 10000 - 0.00553 336.82 0.107 mda-20-r 250 125 1500 10000 10000 0.00400 483.45 0.095 mda-25a-r 250 125 1500 10000 10000 0.00305 734.69 0.105 mda-30a-r 250 125 1500 10000 10000 0.00243 1096.7 0.110 * 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 25c ambient temperature at rated current) electrical characteristics rated current amp rating opening time 100% none 1/4 - 30a 135% 60 minutes max. 200% 120 seconds max. ordering ? specify packaging, product, and option code 38.10 (1.500) 32.82 (1.292) 38.10 (1.500) 6.76 (0.266) 31.75 (1.250) 6.35 (0.250) dia. of leads 0?15 amp: 20?30 amp: 0.81 (0.032) 1.02 (0.040)
? 2009 cooper bussmann st. louis, mo 63178 www.cooperbussmann.com 0709 sb-bu09312 page 2 of 2 data sheet 2002 the only controlled copy of this data sheet is the electronic read-only version located on the cooper bussmann network drive. al l 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 desig n applications. cooper bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. cooper bussmann also reserves t he right to change or update, without notice, any technical information con- tained in this bulletin. once a product has been selected, it should be tested by the user in all possible applications. life support policy: cooper bussmann does not authorize the use of any of its products for use in life support devices or system s without the express written approval of an officer of the company. life sup- port systems are devices which support or sustain life, and whose failure to perform, when properly used in accordance with instr uctions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. time in seconds time in seconds current in amps current in amps 1/4 1/2 1 2 3-2/10 4 5 6-1/4 10 12 15 20 25 30 packaging code packaging code 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 time-current curve
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