POWR-SPEED Fuse L75QS SERIES HIGH-SPEED ROUND BODY 750 V dc Very Fast Acting 35800 A HF Specifications Voltage Rating Dc: 750 V Amperage Rating 35800 A Interrupting Rating Dc: 50 kA Time Constant 10 ms Material Body: Melamine Caps: Copper Alloy Approvals UL Recognized (E71611) cURus (E71611) Environmental RoHS compliant, REACH Country of Origin Mexico Operating Temperature -55 C to +125 C Storage Temperature Up to 35 C with relative humidity <65 % Part Numbering System Description L75 QS 700 . X The L75QS series is a next generation high-speed fuse for the protection of power semiconductor devices and is Series designed in the traditional round body bolted style package. Body Type Package Quantity L75QS series high-speed fuses rated at 750 V dc are X = 1 (225800 A) Ampere Code extremely current limiting and are used to protect power V = 5 (35200 A) converters, drives and control circuit applications. Designed 2 with lower I t performance characteristics, these fuses BODY AMPERE PACKAGE CATALOG ORDERING SERIES provide balanced performance to extend longevity while TYPE CODE QUANTITY NUMBER NUMBER lowering potentially damaging heat energy to the devices L75 QS 700 1 L75QS700 L75QS700.X being protected. In addition L75QS series fuses have been designed with a Recommended Fuse Blocks universal mounting option to meet customer requirements for installation into a variety of application configurations. LSCR101 (35100 A) LSCR102 (125800 A) Littelfuse POWR-SPEED products offer optimized circuit LSCR103 (450800 A) protection at the extremely fast speed required to protect modern day, sensitive, high-power semiconductor devices. Features Compliance with US and Canadian requirements Traditional North American bolted style dimensions 750 V dc performance Direct bus-bar mount or stud mount design Halogen free, RoHS and REACH compliant Applications Power converters (inverters, rectifiers) Power supplies, UPS EV charging stations Web Resources Variable speed drives Download technical documents: Littelfuse.com/L75QS Dc common bus Note: high-speed fuses are designed for fixed installations. They are not intended for use in moving vehicle applications. Littelfuse.com/L75QS 2019 Littelfuse, Inc. 1 of 13 Rev: 1-A-061819 POWR-SPEED Fuse L75QS SERIES HIGH-SPEED ROUND BODY Electrical Specifications TOTAL WATTS LOSS WATTS LOSS VOLTAGE INTERRUPT MELTING CLEARING AT 80 % RATED AT 100 % RATED CATALOG AMPERAGE RATING RATING 2 2 (PRE-ARC) I T (A s) CURRENT CURRENT NUMBER RATING 2 2 I T (A s) DC DC 50 KA 750 V DC (W) (W) L75QS035 35 750 50 kA 129 406 5 8 L75QS040 40 750 50 kA 153 549 6 9 L75QS050 50 750 50 kA 196 776 6 12 L75QS060 60 750 50 kA 269 895 9 15 L75QS070 70 750 50 kA 359 1,399 10 20 L75QS080 80 750 50 kA 452 1,841 12 22 L75QS090 90 750 50 kA 625 2,498 13 25 L75QS100 100 750 50 kA 966 3,053 15 30 L75QS125 125 750 50 kA 2,208 7,069 13 24 L75QS150 150 750 50 kA 3,026 10,401 17 32 L75QS175 175 750 50 kA 4,216 14,786 20 38 L75QS200 200 750 50 kA 5,529 20,433 22 42 L75QS225 225 750 50 kA 9,226 27,520 22 40 L75QS250 250 750 50 kA 10,999 34,291 27 46 L75QS300 300 750 50 kA 16,296 49,297 31 57 L75QS350 350 750 50 kA 24,778 70,696 35 67 L75QS400 400 750 50 kA 34,225 102,567 41 79 L75QS450 450 750 50 kA 38,946 119,606 45 81 L75QS500 500 750 50 kA 42,747 132,252 56 112 L75QS600 600 750 50 kA 67,363 189,333 67 138 L75QS700 700 750 50 kA 99,387 302,425 72 138 L75QS800 800 750 50 kA 156,137 421,500 76 142 Ordering Information AMPERAGE AMPERE CATALOG ORDERING PACK SERIES UPC RATING CODE NUMBER NUMBER QUANTITY L75QS 35 035 L75QS035 L75QS035.V 5 Pcs/ Box 07945823571 L75QS 40 040 L75QS040 L75QS040.V 5 Pcs/ Box 07945823572 L75QS 50 050 L75QS050 L75QS050.V 5 Pcs/ Box 07945823573 L75QS 60 060 L75QS060 L75QS060.V 5 Pcs/ Box 07945823574 L75QS 70 070 L75QS070 L75QS070.V 5 Pcs/ Box 07945823575 L75QS 80 080 L75QS080 L75QS080.V 5 Pcs/ Box 07945823576 L75QS 90 090 L75QS090 L75QS090.V 5 Pcs/ Box 07945823577 L75QS 100 100 L75QS100 L75QS100.V 5 Pcs/ Box 07945823578 L75QS 125 125 L75QS125 L75QS125.V 5 Pcs/ Box 07945823579 L75QS 150 150 L75QS150 L75QS150.V 5 Pcs/ Box 07945823580 L75QS 175 175 L75QS175 L75QS175.V 5 Pcs/ Box 07945823581 L75QS 200 200 L75QS200 L75QS200.V 5 Pcs/ Box 07945823582 L75QS 225 225 L75QS225 L75QS225.X 1 Pc/ Box 07945823583 L75QS 250 250 L75QS250 L75QS250.X 1 Pc/ Box 07945823584 L75QS 300 300 L75QS300 L75QS300.X 1 Pc/ Box 07945823585 L75QS 350 350 L75QS350 L75QS350.X 1 Pc/ Box 07945823586 L75QS 400 400 L75QS400 L75QS400.X 1 Pc/ Box 07945823587 L75QS 450 450 L75QS450 L75QS450.X 1 Pc/ Box 07945823588 L75QS 500 500 L75QS500 L75QS500.X 1 Pc/ Box 07945823589 L75QS 600 600 L75QS600 L75QS600.X 1 Pc/ Box 07945823590 L75QS 700 700 L75QS700 L75QS700.X 1 Pc/ Box 07945823591 L75QS 800 800 L75QS800 L75QS800.X 1 Pc/ Box 07945823592 Littelfuse.com/L75QS 2019 Littelfuse, Inc. 2 of 13 Rev: 1-A-061819