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

Electrical Characteristics

Rated Current	Amp Rating	Opening Time
1/4 - 30A	100%	None
	135%	60 Minutes Max.
	200%	120 Seconds Max.

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 Condition J
• 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 packaging, product, and option code

Dimensions - mm (in)
Drawing Not to Scale



SPECIFICATIONS

Part Number	Voltage Rating		AC Interrupting Rating* (amps)		DC Interrupting Rating (amps)	Typical DC Cold Resistance** (Ω)	Typical Melting I2t† AC	Typical Voltage Drop‡
	Vac	Vdc	250V	125V	125V
MDA-1/4-R	250	-	35	10000	-	9.325	0.748	4
MDA-1/2-R						1.925	2.53	1.42
MDA-3/4-R						0.8555	8.58	1.31
MDA-1-R						0.56	12.21	1.03
MDA-1-1/2-R			100			0.2585	27.5	0.691
MDA-2-R						0.17	70.4	0.623
MDA-2-1/2-R			200			0.06685	31.79	0.213
MDA-3-R						0.0535	44.99	0.182
MDA-4-R						0.03625	147.4	0.162
MDA-5-R						0.0261	380.49	0.145
MDA-6-R						0.0212	587.73	0.141
MDA-7-R						0.0169	638.33	0.137
MDA-8-R						0.0135	1038.4	0.134
MDA-10-R						0.00948	1620.43	0.135
MDA-12-R			750			0.00725	125.18	0.128
MDA-15-R						0.00553	336.82	0.107
MDA-20-R		125	1500		10000	0.004	483.45	0.095
MDA-25A-R						0.00305	734.69	0.105
MDA-30A-R						0.00243	1096.7	0.11

* 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 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)

Time-Current Curve


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