© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com
POWR-GARD® Fuse Datasheet
Telecom Products
1
Description
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 I2t
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.
Features
• Low I2t
• Extremely current-limiting
• Low operating temperature
• 170 VDC rating
Specifications
Voltage Rating: 170 VDC
Interrupting Rating: 100 kA
Ampere Range: 70 – 1200 A
Approvals: UL Recognized (File No. E71611)
CSA Recognized (File No. LR29862)
A
B
C
D
F
G
E
H
Fig. 3
Ordering Information
AMP
RAting
DiMensions in inches (mm)
A B c D e F g h
70 – 250 15⁄32
(29.4)
17⁄8
(47.6)
23⁄16
(55.6)
221⁄32
(67.5)
1
(25.4)
7⁄8
(22.2)
5⁄16
( 7.9 )
3⁄16
(4.8)
300 – 800 11⁄4
(31.8)
115 ⁄16
(49.2)
29⁄16
(65.1)
31⁄2
(88.9)
11⁄2
(38.1)
1
(25.4)
13 ⁄32
(10.3)
1⁄4
(6.35)
900–1200 111 ⁄32
(34.0) — — 41⁄16
(103.1) —11⁄2
(38.1) —
1⁄4
(6.35)
L17t seRies teLecoMMunicAtions PoweR Fuse
170 VDC • Current-Limiting • 70-1200 Amperes
AMPeRAge RAtings
70 125 200 300 450 800 110 0
90 150 225 350 500 900 1200
100 175 250 400 600 1000
Web Resources
For additional information, visit:
www.littelfuse.com/l17t
Recommended Fuseholders
LTFD 6001 and LTFD 1200 series–see website:
www.littelfuse.com/ltfd
Dimensions in inches (mm)
seRies VoLtAge AMPeRAge cAtALog
nuMBeR
oRDeRing
nuMBeR
L17T 170 1200 L17T 1200 L17T1200V
