Dimensional Data — in
Covers — in (mm)
Catalog Symbol: GMT
Fast-acting indicating fuse for telecom circuits.
Ratings:
Volts: 60Vdc/125Vac
Amps:18/100 – 15A
IR: 450A @ 60Vdc
300A @ 125Vac
Agency Information:
UL Recognized, Guide JFHR2, File E56412
Materials:
Body: Thermoplastic (flammability rating: UL94V0)
Terminals: Tin-plated beryllium copper
Carton Quantity & Weight:
100 fuses per carton, 0.33 lbs. (150g.)
Fuse Holders: Catalog Nos. HLS, HLT and PCT
General Information:
• For telecom, computer, or control circuits.
• Visual spring indicating and alarm circuit indicating.
• Color coded flags designate amp rating.
• Fuses easily replaced without use of insulated tools.
• Fuses can be removed with wire hook when mounted on
minimum centers.
•GMT-X fuse cover available.
•GMT-Y fuse cover (with pull-tab) available.
Catalog Symbol and Color Codes
Catalog Color Catalog Color
Symbol Code Symbol Code
GMT-18/100A Yellow GMT-3 1/2A White/Blue
GMT-1/4A Violet GMT-4A White/Brown
GMT-3/8A White/Gray GMT-5A Green
GMT-1/2A Red GMT-7 1/2A Black/White
GMT-65/100A Black GMT-10A Red/White
GMT-3/4A Brown GMT-12A Yellow/Green
GMT-1A Gray GMT-15A Red/Blue
GMT-1 1/3A White GMT-Dummy Gray
GMT-1 1/2A White/Yellow GMT-A (alarm)* Yellow
GMT-2A Orange GMT-X (cover) Clear
GMT-3A Blue
0708 BU-SB08204 Page 1 of 2 Data Sheet 5008
Fast-Acting Indicating Telecom Fuse
60Vdc/125Vac
*Designed specifically for use in the Telpower®Series 15800 fused
disconnect switch.
0.118
0.107
0.127
0.585
0.81
0.688
MAX.
CONTACT AND
ALARM SPRING
BUSS GMT-X
0.20"
(5.1mm)
0.95"
(24.0mm)
0.36"
(9.0mm)
0.84"
(21.3mm)
GMT-X Fuse Cover
BUSS GMT-Y
0.20"
(5.1mm)
0.95"
(24.0mm)
0.7"
(17.8mm)
0.84"
(21.3mm)
GMT-Y Fuse Cover
1
1
0
Time-Current Characteristic Curves–Average Melt
Test Specifications
Percent Opening
Overload Time
100% 10 min. (minimum)
150% 5 min. (maximum)
0708 BU-SB08204 Page 2 of 2 Data Sheet 5008
The only controlled copy of this Data Sheet is the electronic read-only version located on the Cooper Bussmann Network Drive. All other copies of this document are by definition uncontrolled. This bulletin
is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Cooper Bussmann reserves the right, without notice, to
change design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann also reserves the right to change or update, without notice, any technical infor-
mation contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications.
18⁄100A
1⁄4A
3⁄8A
65⁄100A
1A
1.5A
2A
3A
4A
5A
7.5A
10A
15A
Time In Seconds
Current In Amps
100
10
1
.1
.1
.01
1
10
100
1,000
300
Amp
Rating
12A
11⁄3A
3⁄4A
1⁄2A
