Description
• Axial Leaded
• Slow Blow, Wire-in-Air Design
• Tin-lead Plated Copper Lead Wires
• High Temperature Epoxy Plastic Body, UL 94 VO
• Interrupt 50 amperes at 125 VAC
Agency Information
•UL Recognition Guide & File numbers: JDYX2 &
E195337.
•CSA Certification Record No: LR 701159 & Class No:
1422 30 and 1422 01.
Environmental Data
•Shock Resistance:MIL-STD-202, Method 213, Test
Condition 1 (Sawtooth)
•Vibration Resistance: MIL-STD-202, Method 201
(10-55 Hz x 3 axis/ no load)
•Moisture Resistance: MIL-STD-202F, Method 106
•Soldering Heat Resistance: 260°C, 10 seconds per
IEC 68-2-20
•Salt Spray: MIL-STD-202, Method 101, Test
Condition B (48 Hours)
Ordering
• Specify product code and packaging code
Soldering Method
• Heat Resistance: 260°C, 10 sec per IEC 68-2-20
3.18 ± 0.1__ _
7.1 ± 0.5 (0.125 ± 0.004)
38.1± 2.0 (0.280 ± 0.020)
(1.5 ± 0.08)
0.81 di a.
(0.032)
3.18 ± 0.1 diameter
(0.125 ± 0.004)
0.81 diameter
(0.032)
Construction
Dimensions mm⁄(inches)
End View
*AC Interrupting Rating (Measured at designated voltage, 100%) DC Interrupting Rating (Measured at
designated voltage, rise time of less than 50 microseconds, battery source)
** DC Cold Resistance (Measured at 10% of rated current)
†Typical Melting I2t (Measured with a battery bank at rated DC voltage, 10x-rated current, rise time of
calibrated circuit less than 50 microseconds)
‡Typical Voltage Drop (Measured at rated current after temperature stabilizes)
Subminiature Through Hole
MCRS Series, Slow Blow,Wire-in-Air
ELECTRICAL CHARACTERISTICS
% of Amp Rating Opening Time
100% 4 hours minimum
200% 30 seconds maximum
SPECIFICATIONS
Voltage Interrupting Resistance Typical Typical
Product Code Rating Rating* (ohms)** Melt Voltage
AC/DC AC DC Typ. I2t† Drop (V)‡
MCRS250mA 125 V 50 A 300 A 3.20 0.042 2.20
MCRS300mA 125 V 50 A 300 A 2.57 0.056 2.02
MCRS375mA 125 V 50 A 300 A 1.66 0.101 1.69
MCRS500mA 125 V 50 A 300 A 1.07 0.18 1.42
MCRS750mA 125 V 50 A 300 A 0.55 0.44 1.09
MCRS1A 125 V 50 A 300 A 0.36 0.78 0.91
MCRS1.25A 125 V 50 A 300 A 0.23 1.41 0.77
MCRS1.5A 125 V 50 A 300 A 0.18 1.9 0.7
MCRS2A 125 V 50 A 300 A 0.12 3.4 0.59
MCRS2.5A 125 V 50 A 300 A 0.08 6.1 0.5
MCRS3A 125 V 50 A 300 A 0.06 8.1 0.45
MCRS4A 125 V 50 A 300 A 0.04 15 0.38
MCRS5A 125 V 50 A 300 A 0.02 35 0.29
MCRS7A 125 V 50 A 300 A 0.01 63 0.25
PACKAGING CODE
Packaging Code Description
TR1 2,500 pieces on tape-and-reel per EIA-296-E @ 5 mm pitch and 52.4mm inside tape spacing
TIME CURRENT CURVE
Subminiature Through Hole
MCRS Series, Slow Blow,Wire-in-Air
Visit us on the Web at www.cooperET.com
3601 Quantum Boulevard Boynton Beach, Florida 33426-8638
Tel: +1-561-752-5000 Toll Free: +1-888-414-2645 Fax: +1-561-742-1178
This bulletin is intended to present product design solutions and technical information that will help the end user with design applications. Cooper
Electronic Technologies reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of
any products. Cooper Electronic Technologies 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.
OC-2535 Rev. A 5/03
© Cooper Electronic
Technologies 2003
