Catalog Ampere Competitor A Competitor B
Number Rating Part Number Part Number
L17T 70 70 TPL-BA TGL-BA
L17T 90 90 TPL-BC TGL-BC
L17T 100 100 TPL-BD TGL-BD
L17T 125 125 TPL-BE TGL-BE
L17T 150 150 TPL-BF TGL-BF
L17T 175 175 TPL-BG TGL-BG
L17T 200 200 TPL-BH TGL-BH
L17T 225 225 TPL-BK TGL-BK
L17T 250 250 TPL-BL TGL-BL
L17T 300 300 TPL-CN TGL-CN
L17T 350 350 TPL-CO TGL-CO
L17T 400 400 TPL-CR TGL-CR
L17T 450 450 TPL-CU TGL-CU
L17T 500 500 TPL-CV TGL-CV
L17T 600 600 TPL-CZ TGL-CZ
L17T 800 800 TPL-CZH TGL-CZH
L17T 900 900 - -
L17T 1000 1000 - -
L17T 1100 1100 - -
L17T 1200 1200 - -
75
L17T Series Telecommunications Power Fuse
170 VDC
■
Current Limiting
■
70 – 1200 Amperes
SPECIFICATIONS
Voltage Rating: 170 VDC
Interrupting Rating: 100,000 amperes
Ampere Range: 70 – 1200 amperes
Approvals: UL Recognized under the Components Program
(File No: E71611)
CSA Recognized under the Component
Acceptance Program (File No: LR29862)
AMPERE RATINGS
70 125 200 300 450 800 1100
90 150 225 350 500 900 1200
100 175 250 400 600 1000
Example part number (series & amperage): L17T 200
RECOMMENDED FUSE BLOCKS
LTFD 6001 and LTFD1200 series
Refer to the LTFD series in this catalog section for
additional information.
FEATURES
■
Low I
2
t
■
Extremely current limiting
■
Low operating temperature
■
170 VDC rating
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’s unique element geometry
also provides cooler running temperatures, helping to
minimize heat within enclosures.
AMPERE
RATING
70 – 250
1-5/32 1-7/8 2-3/16 2-21/32 1 7/8 5/16 3/16
(29.4) (47.6) (55.6) (67.5) (25.4) (22.2) (7.9) (4.8)
300 – 800
1-1/4 1-15/16 2-9/16 3-1/2 1-1/2 1 13/32 1/4
(31.8) (49.2) (65.1) (88.9) (38.1) (25.4) (10.3) (6.35)
1000 – 1200
1-11/32 — — 4-1/16 — 1-1/2 — 1/4
(34.0) (103.12) (38.1) (6.35)
AB C D E F G H
DIMENSIONS IN INCHES (mm in parentheses)
Contact Littelfuse for characteristic curves.
Fig. 3
