LA15QS Semiconductor Fuses 150 VAC ■ Very Fast-Acting ■ 1 – 6000 Amperes SPECIFICATIONS Voltage Rating: AC: 150 volts DC: 150 volts Interrupting Rating: 100,000 Amperes Ampere Range: 1 – 6000 Amperes Approvals: UL Recognized under the components program. NEW ORDERING INFORMATION LA 15 QS 400 -4 TI Littelfuse Voltage (150) Style Ampere Rating Littelfuse’s LA15QS series Semiconductor fuses were designed for the specific protection of diodes and other semiconductor devices rated 150VAC/DC. The LA15QS product lines compact design is perfect for those applications that have limitations on available space. FEATURES ■ ■ ■ ■ Low I2t minimizes damage to protected components on short circuit. Controlled arc voltage reduces stress to circuit components during fuse clearing. Choice of mounting types provides options for unique termination requirements. Indicator options allow identification of blown fuses. APPLICATIONS Protection of heavy duty devices such as electromechanical rectifiers. Contact Littelfuse for characteristic curves. 86 Mounting Type Ferrule Ferrule, midget dim. Blades/Bolt-in Hockey Puck, bolt-in 1 2 4 128 Integral Blown-Fuse Indicator Trigger Indicator Trigger Actuator TI IL Note: Mounting types and integral blown fuse indicators are optional for specified ratings. LA15QS Semiconductor Fuses 150 VAC ■ Very Fast-Acting 1 – 6000 Amperes ■ Catalog Numbers & Technical Data Ampere Rating Littelfuse Catalog Number 1 2 3 4 5 6 7 8 10 12 15 20 25 30 35 40 40 45 50 50 55 60 70 70 80 80 90 100 100 130 130 150 150 150 200 200 250 LA15QS1-2 LA15QS2-2 LA15QS3-2 LA15QS4-2 LA15QS5-2 LA15QS6-2 LA15QS7-2 LA15QS8-2 LA15QS10-2 LA15QS12-2 LA15QS15-2 LA15QS20-2 LA15QS25-2 LA15QS30-2 LA15QS35-1 LA15QS40-1 LA15QS40-4TI LA15QS45-1 LA15QS50-1 LA15QS50-4 LA15QS55-1 LA15QS60-1 LA15QS70-4 LA15QS70-4TI LA15QS80-4 LA15QS80-4TI LA15QS90-4 LA15QS100-4 LA15QS100-4TI LA15QS130-4 LA15QS130-4TI LA15QS150-4 LA15QS150-4IL LA15QS150-4TI LA15QS200-4 LA15QS200-4IL LA15QS250-4 Mounting Maximum Type Clearing I2t @150 VAC 2 3 (A S x 10 ) 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 4TI 1 1 4 1 1 4 4TI 4 4TI 4 4 4TI 4 4TI 4 4IL 4TI 4 4IL 4 0.0002 0.001 0.003 0.007 0.012 0.022 0.011 0.015 0.019 0.030 0.042 0.072 0.14 0.25 0.21 0.28 0.39 0.34 0.47 0.64 Contact Factory 0.94 2 2 2.5 2.5 3.1 3.6 3.6 5.3 5.3 6.8 6.8 6.8 9 9 15 FIGURE 1 Watts Loss @ Rated Current (W) Ampere Rating Littelfuse Catalog Number 0.68 1.3 1.7 2.1 2.8 3.1 2.2 2.5 2.6 3 3 4 5.2 5.6 9 10 3.1 12 13 4 Contact Factory 14 5.6 5.6 8 8 9 10 10 14 14 16 16 16 22 22 22 250 300 300 300 350 350 400 400 400 450 450 500 500 600 600 800 1000 1000 1000 1000 1000 1200 1200 1500 1500 2000 2000 2500 2500 3000 3000 3500 4000 4000 5000 6000 LA15QS250-4TI LA15QS300-4 LA15QS300-4IL LA15QS300-4TI LA15QS350-4 LA15QS350-4TI LA15QS400-4 LA15QS400-4IL LA15QS400-4TI LA15QS450-4 LA15QS450-4IL LA15QS500-4 LA15QS500-4IL LA15QS600-4 LA15QS600-4IL LA15QS800-4 LA15QS1000-4 LA15QS1000-4IL LA15QS1000-4TI LA15QS1000-128 LA15QS1000-128IL LA15QS1200-128 LA15QS1200-128IL LA15QS1500-128 LA15QS1500-128IL LA15QS2000-128 LA15QS2000-128IL LA15QS2500-128 LA15QS2500-128IL LA15QS3000-128 LA15QS3000-128IL LA15QS3500-128 LA15QS4000-128 LA15QS4000-128IL LA15QS5000-128 LA15QS6000-128 FIGURE 5 FIGURE 6 FIG. NO. 1 – 30 2 1 35 – 60 1 1 70 – 450 4, 4TI*, 4IL* 2, 3* 500 – 1000 4, 4TI*, 4IL* 2, 3* 750 – 2000 128, 128IL* 4, 5* 2500 – 3000 128, 128IL* 4, 5* 3500 – 4000 128, 128IL* 6, 7* 128 FIGURE 8 Dimensions for reference only. MOUNT. TYPE 5000 – 6000 15 27 22 33 22 33 22 33 32 40 32 40 40 45 40 45 40 45 50 50 50 50 90 30 90 30 130 35 130 35 290 57 520 75 520 75 520 75 540 88 540 88 680 100 680 100 1200 130 1200 130 1900 165 1900 165 3200 195 3200 195 4800 240 4800 240 6500 260 8500 270 8500 270 Contact Factory Contact Factory Contact Factory Contact Factory FIGURE 7 DIMENSIONS AMPERES 4TI 4 4IL 4TI 4 4TI 4 4IL 4TI 4 4IL 4 4IL 4 4IL 4 4 4IL 4TI 128 128IL 128 128IL 128 128IL 128 128IL 128 128IL 128 128IL 128 128 128IL 128 128 Watts Loss @ Rated Current (W) FIGURE 3 FIGURE 2 FIGURE 4 Mounting Maximum Type Clearing I2t @150 VAC 2 3 (A S x 10 ) 8 A 1.50 (38.1) 2.00 (50.8) 2.66 (67.6) 3.50 (88.9) 1.88 (47.88) 1.88 (47.88) 1.88 (47.88) 2.38 (60.5) DIMENSIONS IN INCHES (mm in parentheses) B C D E F G .41 (10.4) .81 (20.6) 1.13 (28.7) 1.50 (38.1) 2.00 (50.8) 3.00 (76.2) 3.50 (88.9) 5.75 (146) 1.16 (29.5) 1.25 (31.8) 1.63 (41.4) 1.63 (41.4) 1.63 (41.4) 1.88 (47.7) 2.19 (55.6) 2.56 (65.0) 1.75 (44.5) 2.50 (63.5) 3.00 (76.2) 5.00 (127) 1.91 (48.5) 1.94 (49.3) 1.00 (25.4) 1.50 (38.1) 1.06 (27.0) 1.50 (38.1) .31 (7.9) .41 (10.4) 1.06 (27.0) 1.50 (38.1) .88 (22.4) 1.00 (25.4) - H .19 (4.8) .25 (6.4) - Tap 3/8-24-1/2 1/2-20-1/2 1/2-20-1/2 1/2-20-1/2 - deep deep deep deep * Optional Trigger Actuator (IL) 87