Telecom Products
L17T Series Telecommunications Power Fuse
170 VDC • Current-Limiting • 70 – 1200 Amperes
Specifically designed for short-circuit protection of telecommunications
circuits, the Littelfuse L17T series fuses provide reliable protection of
sensitive DC power distribution systems. Constructed with silver plated
elements for low I
2
t and peak let-through, these advanced fuses virtually
eliminate equipment damage due to surges and spikes. The L17T series
fuse unique element geometry also provides cooler running temperatures,
helping to minimize heat within enclosures.
Ordering Information & Cross Reference
Catalog Number
L17T 70
L17T 90
L17T 100
L17T 125
L17T 150
L17T 175
L17T 200
L17T 225
L17T 250
L17T 300
L17T 350
L17T 400
L17T 450
L17T 500
L17T 600
L17T 800
L17T 900
L17T 1000
L17T 1100
L17T 1200
Ampere
Rating
70 – 250
300 – 800
Ampere Rating
70
90
100
125
150
175
200
225
250
300
350
400
450
500
600
800
900
1000
1100
1200
Competitor A
Part Number
TPL-BA
TPL-BC
TPL-BD
TPL-BE
TPL-BF
TPL-BG
TPL-BH
TPL-BK
TPL-BL
TPL-CN
TPL-CO
TPL-CR
TPL-CU
TPL-CV
TPL-CZ
TPL-CZH
–
–
–
–
Competitor B
Part Number
TGL-BA
TGL-BC
TGL-BD
TGL-BE
TGL-BF
TGL-BG
TGL-BH
TGL-BK
TGL-BL
TGL-CN
TGL-CO
TGL-CR
TGL-CU
TGL-CV
TGL-CZ
TGL-CZH
–
–
–
–
Telecom Products
F
G
A
B
C
D
H
E
Fig. 3
Contact Littelfuse for characteristic curves.
1000–1200
A
1
5
⁄
32
(29.4)
1
1
⁄
4
(31.8)
1
11
⁄
32
(34.0)
Dimensions in Inches (mm in parentheses)
B
C
D
E
F
G
78
5 16
1
7
⁄
8
2
3
⁄
16
2
21
⁄
32
1
⁄
⁄
(47.6) (55.6) (67.5) (25.4) (22.2)
(7.9)
13 32
1
15
⁄
16
2
9
⁄
16
3
1
⁄
2
1
1
⁄
2
1
⁄
(49.2) (65.1) (88.9) (38.1) (25.4) (10.3)
4
1
⁄
16
1
1
⁄
2
—
—
—
—
(103.1)
(38.1)
H
⁄
(4.8)
14
⁄
(6.35)
14
⁄
(6.35)
3 16
Specifications
Voltage Rating:
Interrupting Rating:
Ampere Range:
Approvals:
170 VDC
100,000 amperes
70 – 1200 amperes
UL Recognized under the Components Program
(File No: E71611)
CSA Recognized under the Component Acceptance
Program (File No: LR29862)
Ampere Ratings
70
80
90
100
125
150
175
200
225
250
300
350
400
450
500
600
800
900
1000
1100
1200
Example part number (series & amperage): L17T 200
Features
• Low I
2
t
• Extremely current-limiting
• Low operating temperature
• 170 VDC rating
Recommended Fuse Blocks
LTFD 6001 and LTFD 1200 series
Refer to the LTFD series in this catalog section for additional information.
© 2005 Littelfuse
•
POWR-GARD
™
Products Catalog
www.littelfuse.com
77
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