Power Distribution Protection Power Distribution Protection Telecom Disconnect Switch LTFD 1200 Series — 900 to 1200 Amp Telecommunications Power Fuse TLN Series Littelfuse’s new 1200 ampere Specifications The TLN Series fuses are specifically Specifications LTFD 1200-01 fuseholders are designed Voltage Rating: 60 VDC designed for the protection of Voltage Rating: 170 VDC Ampere Range: 900 to 1200 amperes distribution circuits. for high power applications where space and costs are major concerns. This compact fuseholder is designed specifically for 900 to 1200A applications and can replace two conventional 600A telecommunications DC power Features Approvals: UL Recognized (File No. E122674) holders. An optional integrated alarm fuse circuit provides visual and remote Interrupting Rating: 100,000 amperes Dimensions notification of a blown fuse. The 5.750" positive connection and eliminates the need for tools to replace blown fuses. 170 VDC • Fast-acting and current limiting • 1 to 600 amperes Approvals: UL Recognized Dimensions 6.750" innovative pull-out design provides a Ampere Range: 1 to 600 amperes • 0.50" ALARM FUSE CLEAR COVER FOR CUSTOMER LABEL 3.0" 4.0" A A F K Features • Compact • Vented for cool running operation • Quick fuse replacement • Optional integrated alarm signaling circuit Recommended Fuses • Littelfuse L17T Series fuses • Littelfuse 481 Series Alarm fuses 0.266" DIA. HOLE WITH 0.50" X 0.156" DEEP CORE (4 PLACES) 0.50" G B D 1.125-12 ALARM TAB 7.625" FIG. 2 Dimensions Ampere Rating Figure 1 A B C 2 (50.8) 3 (76.2) 1/2 (12.7) 3/4 (19.1) 1/2 (12.7) 5/8 (15.9) Dimensions in Inches (mm) D E F G H J K 3/8 (9.5) 5/8 (15.9) — — — — — — 9/32 (7.1) 9/32 (7.1) 13/32 (10.3) 17/32 (13.5) 1/2 (12.7) 11/16 (17.5) 15/16 (23.8) 1-1/8 (28.6) 4.00" 1 – 30 1.313" D J C FIG. 1 3.625" F B H E 2.750" E C 2.625" 5.250" 35 – 60 9/16 (14.3) 13/16 (20.6) 5/64 (2.0) 3/32 (2.4) 5/32 (4.0) 3/16 (4.8) 1/8 (3.2) 3/16 (4.8) 1/4 (6.4) 1/4 (6.4) 3/4 1-1/4 1/4 (19.1) (31.6) (6.4) 1-1/8 1-27/32 7/16 (28.6) (46.8) (11.1) 1-5/8 2-11/32 5/8 (41.3) (59.5) (15.9) 2 2-27/32 3/4 (50.8) (72.2) (19.1) Figure 2 5-7/8 (149.2) 110 – 200 7-1/8 (181.0) 8-5/8 225 – 400 (219.1) 10-3/8 450 – 600 (263.5) 70 – 100 Ordering Information Catalog Number LTFD 1200-01 1 1-1/16 1-1/16 (25.4) (27.0) (27.0) 1-1/2 1-15/32 1-19/32 (38.1) (37.3) (40.5) 2 1-15/16 2-3/32 (50.8) (49.2) (53.2) 2-1/2 2-3/8 2-19/32 (63.5) (60.3) (65.9) Ordering Information Catalog Number Amperage TLN 1 1 TLN 3 3 TLN 5 5 TLN 6 6 TLN 10 10 TLN 15 15 TLN 20 20 TLN 25 25 Catalog Number Amperage TLN 30 30 TLN 35 35 TLN 40 40 TLN 45 45 TLN 50 50 TLN 60 60 TLN 70 70 TLN 80 80 Catalog Number Amperage TLN 90 90 TLN 100 100 TLN 110 110 TLN 125 125 TLN 150 150 TLN 175 175 TLN 200 200 TLN 225 225 Catalog Number Amperage TLN 250 250 TLN 300 300 TLN 350 350 TLN 400 400 TLN 450 450 TLN 500 500 TLN 600 600 Replaces Competitor’s TPN and TGN Series 12 www.littelfuse.com www.littelfuse.com 13