POWR-GARD® Fuse Datasheet L17T Series telcom Power Fuse 170 VDC • Current-Limiting • 70 -1200 A Ordering Information 70 90 100 ampere ratings 200 300 450 225 350 500 250 400 600 125 150 175 series voltage amperage L17T 170 1200 800 900 1000 Catalog Number L17T 1200 1100 1200 — Ordering Number L17T1200V Dimensions Inches (mm) F 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 Ampere Rating E Fig. 3 Dimensions Inches (mm) C D E F A B G H 70 – 250 1 5 ⁄ 32 (29.4) 1 7⁄ 8 (47.6) 2 3 ⁄16 (55.6) 2 21 ⁄ 32 (67.5) 1 (25.4) 78 ⁄ (22.2) 5 16 ⁄ (7.9) ⁄ (4.8) 300 – 800 11⁄4 (31.8) 115 ⁄16 (49.2) 2 9 ⁄16 (65.1) 3 1⁄2 (88.9) 11⁄2 (38.1) 1 (25.4) 13 32 ⁄ (10.3) 14 ⁄ (6.35) 900–1200 111 ⁄ 32 (34.0) — — 4 1⁄16 (103.1) — 11⁄2 (38.1) — 14 ⁄ (6.35) • Low I2t • Extremely current-limiting H A B C D G 3 16 • Low operating temperature • 170 VDC rating Web Resources Specifications For additional information, visit: Littelfuse.com/l17t Voltage Rating 170 VDC Interrupting Rating 100 kA Ampere Range 70 – 1200 A ApprovalsUL Recognized (File: E71611) CSA Recognized (File: LR29862) Littelfuse.com Recommended Fuse Holders LTFD 6001 and LTFD 1200 series, visit: Littelfuse.com/ltfd 1 of 1 © 2013 Littelfuse POWR-GARD® Products Rev: 013013