Specify option code if desired: For axial leads, insert
“V” between catalog series and amp rating. E.g. BK/
GMD-V-250-R
With TR2 packaging code, lead wire length is 19.05mm
Electrical Characteristics
Rated Current % of Amp Rating
Opening Time
100%
None
135%
60 minutes maximum
100mA - 4A
5 seconds minimum
200%
2 minutes maximum
Part Number
GMD-125-R
GMD-150-R
GMD-200-R
GMD-250-R
GMD-300-R
GMD-315-R
GMD-375-R
GMD-400-R
GMD-500-R
GMD-600-R
GMD-630-R
GMD-750-R
GMD-800-R
GMD-1-R
GMD-1.2-R
GMD-1.25-R
GMD-1.5-R
GMD-1.6-R
GMD-2-R
GMD-2.5-R
GMD-3-R
GMD-4-R
Voltage Interrupting Rating (amps)
Rating
at Rated Voltage (50Hz)
Vac
250 Vac
125 Vac
250
35
10,000
250
35
10,000
250
35
10,000
250
35
10,000
250
35
10,000
250
35
10,000
250
35
10,000
250
35
10,000
250
35
10,000
250
35
10,000
250
35
10,000
250
35
10,000
250
35
10,000
250
35
10,000
250
100
10,000
250
100
10,000
250
100
10,000
250
100
10,000
250
100
10,000
250
100
10,000
250
100
10,000
250
200
10,000
Typical DC
Cold Resistance
(Ω)**
8.125
6.065
5.190
3.455
3.215
2.400
1.625
1.505
1.0645
0.948
0.629
0.4425
0.4475
0.3065
0.299
0.1995
0.158
0.124
0.107
0.0905
0.0655
0.048
Speci cations
Typical
Melting I
2
t
(amps)†
0.043
0.046
0.200
0.4
0.650
0.890
0.890
1.2
1.4
3.1
3.1
4.7
6.6
12
16
16
25
27
42
94
145
300
Typical
Voltage
Drop (mV)‡
1600
1200
1100
950
800
750
650
600
550
450
450
410
380
310
280
245
240
220
200
195
190
190
UL
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
UR
Agency Approvals
PSE
JET
CSA
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
* 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)
† Typical Melting I
2
t (I
2
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)
Technical Data
2019
Effective
May
2017
GMD
5 mm x 20 mm Time-delay glass tube fuses
Time-Current Curve
38.10mm
(±.38)
5.54mm
(±.20)
Dimensions - mm
21.10mm
(±.81)
(±
( 0.5)
5.2mm
(+0.1/-0.2)
0.65mm
(REF)
(±.38)
Packaging Pre x
BK
BK1
TR2
Description
100 fuses packed into a cardboard carton
1,000 fuses packed into a poly bag
1,500 fuses packed into tape on a reel (19.05mm lead wire length)
Life Support Policy: Eaton does not authorize the use of any of its products for use in life support devices or systems without the express written
approval of an officer of the Company. Life 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.
