LA120X Semiconductor Fuses 1200 VAC ■ Very Fast-Acting ■ 1/2 – 30 Amperes SPECIFICATIONS Voltage Rating: AC: 1200 Volts DC: 1000 Volts Interrupting Rating: 100,000 Amperes Ampere Range: 1/2 – 30 Amperes NEW ORDERING INFORMATION (Ferrule) Mounting Type Ampere Rating Style Voltage (1200) Littelfuse LA 120 X 25 -1 Catalog Numbers & Technical Data Littelfuse’s LA120X semiconductor protection fuses, rated 1/2 through 30A, 1200 VAC are popular for use in traction drive auxiliary circuits and similar applications. LA120X fuses are also suitable for use on 1000VDC auxiliary circuits with low time constants. FEATURES ■ ■ 1000 Volt DC rating for a wide range of circuits. Compact size fits in where competitive sizes will not fit. Ampere Rating Littelfuse Catalog Number Mounting Type Maximum Clearing I2t 2@1200 VAC (A S) 1/2 1 2 3 4 5 6 10 15 20 25 30 LA120X1/2-1 LA120X1-1 LA120X2-1 LA120X3-1 LA120X4-1 LA120X5-1 LA120X6-1 LA120X10-1 LA120X15-1 LA120X20-1 LA120X25-1 LA120X30-1 1 1 1 1 1 1 1 1 1 1 1 1 1.9 7.5 30 69 120 190 280 970 2100 3700 5700 8300 APPLICATIONS Protection of traction drive auxiliary circuits, etc. DIMENSIONS In Inches (mm in parentheses) 4 5/8 (117) .812 (20.6) Contact Littelfuse for characteristic curves. 99