Effective April 2020
Technical Data 2019 Supersedes May 2017
GMD
5 mm x 20 mm Time-delay glass tube fuses
Agency information
UL Listed, Guide JDYX, File E19180
UL Recognition Card (4 A), Guide JDYX2, File
E19180
CSA Certified, Class 1422-01, File 53787
PSE/JET, File 1641-31003-1001
Ordering
Specify product code: Insert packaging code prefix
before part number. E.g. BK-GMD-250-R
Specify option code if desired: For axial leads, insert
Product features V between catalog series and amp rating. E.g.
BK-GMD-V-250-R
Time-delay, low breaking capacity
With TR2 packaging code, lead wire length is 19.05mm
Optional axial leads available
5 x 20 mm physical size
Electrical characteristics
Nickel-plated brass endcap construction
Rated current % of Amp rating Opening time
Designed to UL/CSA 248-14
100% None
135% 60 minutes maximum
125 mA - 4 A
5 seconds minimum
200%
2 minutes maximum
Speci cations
Voltage Interrupting rating (A) Typical DC Typical Typical Agency approvals
2
Part number rating at rated voltage (50 Hz) cold resistance voltage UL PSE CSA
melting I t
2
Vac 250 Vac 125 Vac
()** (A s) drop (mV) JET
GMD-125-R 250 35 10,000 9.91 0.043 1800 X X
GMD-150-R 250 35 10,000 6.065 0.046 1200 X X
3.215
GMD-200-R 250 35 10,000 0.20 1100 X X
GMD-250-R 250 35 10,000 2.400 0.40 950 X X
GMD-300-R 250 35 10,000 1.625 0.65 800 X X
1.555
GMD-315-R 250 35 10,000 0.89 750 X X
GMD-375-R 250 35 10,000 1.0645 0.89 650 X X
GMD-400-R 250 35 10,000 0.948 1.2 600 X X
0.629
GMD-500-R 250 35 10,000 1.4 550 X X
GMD-600-R 250 35 10,000 0.4425 3.1 450 X X
GMD-630-R 250 35 10,000 0.4475 450 X X
3.1
GMD-750-R 250 35 10,000 0.3065 4.7 410 X X
GMD-800-R 250 35 10,000 0.299 6.6 380 X X X
GMD-1-R 250 35 10,000 0.1995 310 X X X
12
GMD-1.2-R 250 100 10,000 0.158 16 280 X X X
GMD-1.25-R 250 100 10,000 0.124 16 245 X X X
GMD-1.5-R 250 100 10,000 0.107 240 X X X
25
GMD-1.6-R 250 100 10,000 0.905 27 220 X X X
GMD-2-R 250 100 10,000 0.655 42 200 X X X
GMD-2.5-R 250 100 10,000 0.48 195 X X X
94
GMD-3-R 250 100 10,000 0.37 145 190 X X X
GMD-4-R 250 200 10,000 0.28 190 UR X
300
* Interrupting ratings (Interrupting ratings for 125mA - 3A were measured at 70% - 80% power factor on AC. The interrupting ratings for 4A were measured at 100%
power factor on AC)
** Typical DC cold resistance (measured at <10% of rated current)
2 2
Typical melting I t (I t was measured at listed interrupting rating and rated voltage)
Typical voltage drop (voltage drop was measured at +20 C ambient temperature at rated current)GMD
Technical Data 2019
Effective April 2020
5 mm x 20 mm Time-delay glass tube fuses
Time-Current Curve
Dimensions - mm
38.10mm
(.38)
5.54mm
(.20)
21.10mm
(.81)
( ( 00.5)
5.2mm
(.38)
(+0.1/-0.2)
0.65mm
(REF)
Packaging code
Packaging prefix Description
BK 100 fuses packed into a cardboard carton
BK1 1,000 fuses packed into a poly bag
TR2 1,500 fuses packed into tape on a reel (19.05mm lead wire length)
Option code
Option code Description
V Axial leads - copper tinned wire with nickel plated brass endcaps
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approval of an officer of the Company. Lif e 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.
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April 2020