3AB 1000VAC / DC High Voltage Fuse
Cartridge Fuses
508 Series
Lead-Free 3AB Fuse
Description
A 1000Vac/Vdc rated ceramic fuse with remarkable
interrupting rating in a compact 6.3 x 32mm package,
which is well suited for circuit protection in high energy
applications.
Features
• In accordance
with Underwriter’s
Laboratories Standard
UL 248-14
Agency Approvals
Agency
Agency File Number
Ampere Range
• RoHS compliant and
Lead-free
• Superior Interrupting
rating of 10,000
Amperes
• Compact form factor of
6.3 x 32mm
• Available in cartridge
• Pluggable into clips or
shock safe holders
Applications
Recognised File: E10480
315mA - 500mA
315mA - 500mA
Electrical Characteristics
% of Ampere
Rating
100%
135%
200%
315mA - 500mA
Ampere Rating
Opening Time
4 Hours, Minimum
1 Hour, Maximum
120 Seconds, Maximum
Used as supplementary protection in appliance or
utilization equipment to provide individual protection for
components or internal circuits.
Electrical Characteristic
Nominal Cold
Resistance
(mohms)
9200
3572
Nominal
Melting
2
I t (A
2
sec.)
0.071
0.259
Agency Approvals
Amp Code
Amp Rating
Voltage
Rating
1000
1000
Interrupting
Rating
10kA @ 1000Vac
10kA @ 1000Vdc
.315
.500
0.315
0.5
x
x
x
x
* 10KA@600Vac/dc also cURus approved. Add suffix “6”
. Example: 0508.315MX6P
.
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/508.html for current information.
1
Revised: December 23, 2010
508 Series
Introduction to Circuit Protection
Cartridge Fuses
Transientology
3AB 1000Vac/dc High Voltage Fuse
Temperature Rerating Curve
Average Time Current Curves
508.315
508.500
10000
1000
100
Time (seconds)
10
1
0
.1
0.01
0.001
0.01
0.1
1
10
100
Amps
Product Characteristics
Materials
Terminal Strength
Solderability
Product Marking
Body : Ceramic
Cap : Nickel–plated brass
MIL-STD-202G, Method 211A,
Test Condition A
NA
Cap1 : Brand logo, current and voltage
ratings
Cap2 : Series and agency approval marks
Operating
Temperature:
Thermal
Shock:
Vibration
Humidity
–55ºC to 125ºC.
MIL
-STD-202G, Method 107G, Test Condition B
(5 Cycles -65ºC to +125ºC).
MIL
-STD-202G, Method 201A
MIL
-STD-202G, Method 103B, Test Condition
A: High relative humidity (95%) and elevated
temp (40ºC) for 240 hours
MIL
-STD-202G, Method 101E, Test Condition B
Salt Spray
Dimensions
Part Numbering System
0508 xxxx M X P
ø 6.3
32
Series
Current Rating Code
Refer to Amp Code column of
Electrical Characteristics Table
Quantity Code
M = 1000
Packaging Code
X = Filler
Lead-free
Packaging
Packaging Option
508 Series
Bulk
N/A
1000
MX
N/A
Packaging Specification
Quantity
Quantity & Packaging
Code
Reel Size
508 Series
2
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/508.html for current information.
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