LA50QS3504 Littelfuse

Special Purpose Fuses LA50QS Semiconductor Fuses 500 VAC Very Fast Acting 35 1200 Amperes In response to new equipment requirements, Littelfuse LA50QS series fuses were developed to improve the overall performance of semiconductor fuses. The LA50QS provides the best protection 2 features including lower I t, longer life when subjected to cyclic loading and lower watts loss. LA50QS is todays choice for the protection of dynamic solid state equipment. Features 2 Lowest I t for greatest protection of semiconductor circuits. Low watts loss for cooler operation. Superior cycling ability gives an equipment design advantage. State-of-the-art protection for 500 volt equipment. Ultra compact sizes allow down-sizing of existing equipment. Applications Protection of 500 volts or less solid state equipment such as motor drives, UPS, inverters, etc. Ordering Information LA 50 QS 250 -4 Littelfuse Voltage (500) Style Ampere Rating Mounting Type (Blades/Bolt-in) Specifications Voltage Rating: AC: 500 volts DC: 500 volts Interrupting Rating: AC: 200,000 Amperes DC: 100,000 Amperes Ampere Range: 35 1200 Amperes Approvals: UL Recognized under the components program CSA Certified. 92 www.littelfuse.com 2005 Littelfuse POWR-GARD Products Catalog Special Purpose FusesSpecial Purpose Fuses Special Purpose Fuses LA50QS Semiconductor Fuses 500 VAC Very Fast Acting 35 1200 Amperes Catalog Numbers & Technical Data Littelfuse Maximum Watts Loss Littelfuse Maximum Watts Loss Ampere Mounting Ampere Mounting 2 2 Catalog Clearing I t 500 Rated Catalog Clearing I t 500 Rated Rating Type Rating Type 2 3 2 3 Number VAC (A S x 10 ) Current (W) Number VAC (A S x 10 ) Current (W) 35 LA50QS35-4 4 0.56 6 250 LA50QS250-4 4 29 41 40 LA50QS40-4 4 0.69 7 300 LA50QS300-4 4 55 49 50 LA50QS50-4 4 1.1 8 350 LA50QS350-4 4 88 57 60 LA50QS60-4 4 1.8 10 400 LA50QS400-4 4 98 65 70 LA50QS70-4 4 1.9 12 450 LA50QS450-4 4 130 69 80 LA50QS80-4 4 2.6 14 500 LA50QS500-4 4 160 77 90 LA50QS90-4 4 3.6 15 600 LA50QS600-4 4 220 92 100 LA50QS100-4 4 4.4 17 700 LA50QS700-4 4 270 110 125 LA50QS125-4 4 5.6 21 800 LA50QS800-4 4 360 130 150 LA50QS150-4 4 9 25 900 LA50QS900-4 4 500 140 175 LA50QS175-4 4 15 29 1000 LA50QS1000-4 4 560 160 200 LA50QS200-4 4 20 33 1200 LA50QS1200-4 4 930 175 225 LA50QS225-4 4 25 37 Dimensions Dimensions for reference only. Dimensions in Inches (mm in parentheses) Mount. Amperes Type A B C D E F G H 3.63 1.00 2.13 2.94 2.75 0.31 0.75 0.13 35 100 4 (92.2) (25.4) (54.1) (74.7) (69.9) (7.9) (19.1) (3.3) 3.63 1.22 2.13 2.94 2.81 0.31 1.00 0.19 125 200 4 (92.2) (31.0) (54.1) (74.7) (71.4) (7.9) (25.4) (4.8) 4.34 1.50 2.09 3.41 2.78 0.41 1.00 0.25 225 400 4 (110) (38.1) (53.1) (86.6) (70.6) (10.4) (25.4) (6.4) 4.47 2.00 2.22 3.53 2.91 0.41 1.50 0.25 450 600 4 (114) (50.8) (56.4) (89.7) (73.9) (10.4) (38.1) (6.4) 6.47 2.50 2.22 5.00 3.44 0.53 1.50 0.25 700 800 4 (164.3) (63.5) (56.4) (127.0) (87.3) (13.5) (38.1) (6.4) 6.97 3.00 3.22 5.47 4.47 0.63 2.38 0.44 900 1200 4 (177.0) (76.2) (81.8) (138.9) (113.5) (15.9) (60.3) (11.1) Contact Littelfuse for characteristic curves. 2005 Littelfuse POWR-GARD Products Catalog www.littelfuse.com 93