L75QS450

L75QS300.X LITTELFUSE | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 13

Technical content

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 Variable speed drives Dc common bus

750 V dc • Very Fast Acting • 35–800 A HF

Littelfuse.com/L75QS © 2019 Littelfuse, Inc. Rev: 1-A-0618192 of 13 POWR-SPEED® Fuse L75QS SERIES HIGH-SPEED ROUND BODY SERIES AMPERAGE RATING AMPERE CODE CATALOG NUMBER ORDERING NUMBER PACK QUANTITY UPC 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

Ordering Information

(PRE-ARC) I2T (A2s) TOTAL CLEARING I2T (A2s) WATTS LOSS AT 80 % RATED CURRENT WATTS LOSS AT 100 % RATED CURRENT 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

Littelfuse.com/L75QS © 2019 Littelfuse, Inc. Rev: 1-A-0618193 of 13 POWR-SPEED® Fuse L75QS SERIES HIGH-SPEED ROUND BODY Dimensions Millimeters [inches] Document Number: OL-L75QS000 Stud Size: M8 (5/16”) Recommended Torque: 15 Nm (132.76 in-lb) Stud Size: M8 (5/16”) Recommended Torque: 15 Nm (132.76 in-lb) Stud Size: M8 (5/16”) Recommended Torque: 15 Nm (132.76 in-lb) Stud Size: M12 (1/2”) Recommended Torque: 54 Nm (477.94 in-lb) Stud Size: M12 (1/2”) Recommended Torque: 54 Nm (477.94 in-lb) CHICAGO, ILLINOIS 60631 3RD ANGLE PROJECTION B OL-L75QS000 Littelfuse ® REVISION DRWG NO. TITLE C DRWD ATE GRAMS/PIECE FINISH GOOD WT MYORK 4/5/2018 HSINIFCEPS LTAM UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATIN G. TOLERANCING TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994 DENOTES CRITICAL CHARACTERISTICS. DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT AND TRACKING TO BE DEFINED IN LITTELFUSE INSPECTION INSTRUCTIONS. DENOTES CP DIMENSIONS, -MINIMUM CP VALUE MUST BE WITHIN THE DIMENSIONAL LIMITATIONS SHOWN ON DRAWING AND INITIALLY LOCATED TO ALLOW FOR MAXIMUM TOOL LIFE. CPK CP SHEET 1 OF 1 SCALE L75QS SERIES OUTLINE NTS REVISION REV DATE DESCRIPTION A 4/25/18 519200GCP - RELEASE MRY B YRM SECNARELOT EDALB DDA - D/PCE65502591/52/3 111.13 1.59 4.375 0.063[] 95.24 1.59 3.749 0.063[] 84.12 1.59 3.312 0.063[] 73.03 [2.875] 17.02 0.89 0.670 0.035[] 8.73 [0.344] 25.40 0.381 1.000 0.015[] 3.18 0.15 0.125 0.006[] 72.24 [2.844] 73.03 [2.875] 30.94 0.381 1.218 0.015[] 38.10 0.89 1.500 0.035[] 10.41 [0.410] 129.39 1.59 5.094 0.063[] 108.72 1.59 4.280 0.063[] 86.76 1.59 3.416 0.063[] 6.35 0.15 0.250 0.006[] 50.80 0.381 2.000 0.015[] 50.80 0.381 2.000 0.015[] 6.35 0.15 0.250 0.006[] 63.50 0.381 2.500 0.015[] 9.53 0.15 0.375 0.006[] 38.10 0.89 1.500 0.035[] 13.46 [0.530] 180.09 1.59 7.090 0.063[] 156.47 1.59 6.160 0.063[] 89.67 1.59 [2.844] 50.80 0.89 2.000 0.035[] 13.46 [0.530] 173.05 1.59 6.813 0.063[] 142.83 1.59 5.623 0.063[] 103.20 1.59 4.063 0.063[] 72.24 [2.844] 35–100A 125–200A 225–400A 450–600A 700–800A 129.16 1.59 5.085 0.063[] 106.30 1.59 4.185 0.063[] 88.77 1.59 3.495 0.063[] 10.41 [0.410] 22.73 0.89 0.895 0.035[] 4.75 0.15 0.187 0.006[] 14.29 [0.563] 33.27 [1.310] 46.86 [1.845] 21.39 [0.842] 19.18 [0.755] CHICAGO, ILLINOIS 60631 3RD ANGLE PROJECTION B OL-L75QS000 Littelfuse ® REVISION DRWG NO. TITLE C DRWD ATE GRAMS/PIECE FINISH GOOD WT MYORK 4/5/2018 HSINIFCEPS LTAM UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATIN G. TOLERANCING TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994 DENOTES CRITICAL CHARACTERISTICS. DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT AND TRACKING TO BE DEFINED IN LITTELFUSE INSPECTION INSTRUCTIONS. DENOTES CP DIMENSIONS, -MINIMUM CP VALUE MUST BE WITHIN THE DIMENSIONAL LIMITATIONS SHOWN ON DRAWING AND INITIALLY LOCATED TO ALLOW FOR MAXIMUM TOOL LIFE. CPK CP SHEET 1 OF 1 SCALE L75QS SERIES OUTLINE NTS REVISION REV DATE DESCRIPTION A 4/25/18 519200GCP - RELEASE MRY B YRM SECNARELOT EDALB DDA - D/PCE65502591/52/3 111.13 1.59 4.375 0.063[] 95.24 1.59 3.749 0.063[] 84.12 1.59 3.312 0.063[] 73.03 [2.875] 17.02 0.89 0.670 0.035[] 8.73 [0.344] 25.40 0.381 1.000 0.015[] 3.18 0.15 0.125 0.006[] 72.24 [2.844] 73.03 [2.875] 30.94 0.381 1.218 0.015[] 38.10 0.89 1.500 0.035[] 10.41 [0.410] 129.39 1.59 5.094 0.063[] 108.72 1.59 4.280 0.063[] 86.76 1.59 3.416 0.063[] 6.35 0.15 0.250 0.006[] 50.80 0.381 2.000 0.015[] 50.80 0.381 2.000 0.015[] 6.35 0.15 0.250 0.006[] 63.50 0.381 2.500 0.015[] 9.53 0.15 0.375 0.006[] 38.10 0.89 1.500 0.035[] 13.46 [0.530] 180.09 1.59 7.090 0.063[] 156.47 1.59 6.160 0.063[] 89.67 1.59 [2.844] 50.80 0.89 2.000 0.035[] 13.46 [0.530] 173.05 1.59 6.813 0.063[] 142.83 1.59 5.623 0.063[] 103.20 1.59 4.063 0.063[] 72.24 [2.844] 35–100A 125–200A 225–400A 450–600A 700–800A 129.16 1.59 5.085 0.063[] 106.30 1.59 4.185 0.063[] 88.77 1.59 3.495 0.063[] 10.41 [0.410] 22.73 0.89 0.895 0.035[] 4.75 0.15 0.187 0.006[] 14.29 [0.563] 33.27 [1.310] 46.86 [1.845] 21.39 [0.842] 19.18 [0.755] CHICAGO, ILLINOIS 60631 3RD ANGLE PROJECTION B OL-L75QS000 Littelfuse ® REVISION DRWG NO. TITLE C DRWD ATE GRAMS/PIECE FINISH GOOD WT MYORK 4/5/2018 HSINIFCEPS LTAM UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATIN G. TOLERANCING TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994 DENOTES CRITICAL CHARACTERISTICS. DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT AND TRACKING TO BE DEFINED IN LITTELFUSE INSPECTION INSTRUCTIONS. DENOTES CP DIMENSIONS, -MINIMUM CP VALUE MUST BE WITHIN THE DIMENSIONAL LIMITATIONS SHOWN ON DRAWING AND INITIALLY LOCATED TO ALLOW FOR MAXIMUM TOOL LIFE. CPK CP SHEET 1 OF 1 SCALE L75QS SERIES OUTLINE NTS REVISION REV DATE DESCRIPTION A 4/25/18 519200GCP - RELEASE MRY B YRM SECNARELOT EDALB DDA - D/PCE65502591/52/3 111.13 1.59 4.375 0.063[] 95.24 1.59 3.749 0.063[] 84.12 1.59 3.312 0.063[] 73.03 [2.875] 17.02 0.89 0.670 0.035[] 8.73 [0.344] 25.40 0.381 1.000 0.015[] 3.18 0.15 0.125 0.006[] 72.24 [2.844] 73.03 [2.875] 30.94 0.381 1.218 0.015[] 38.10 0.89 1.500 0.035[] 10.41 [0.410] 129.39 1.59 5.094 0.063[] 108.72 1.59 4.280 0.063[] 86.76 1.59 3.416 0.063[] 6.35 0.15 0.250 0.006[] 50.80 0.381 2.000 0.015[] 50.80 0.381 2.000 0.015[] 6.35 0.15 0.250 0.006[] 63.50 0.381 2.500 0.015[] 9.53 0.15 0.375 0.006[] 38.10 0.89 1.500 0.035[] 13.46 [0.530] 180.09 1.59 7.090 0.063[] 156.47 1.59 6.160 0.063[] 89.67 1.59 [2.844] 50.80 0.89 2.000 0.035[] 13.46 [0.530] 173.05 1.59 6.813 0.063[] 142.83 1.59 5.623 0.063[] 103.20 1.59 4.063 0.063[] 72.24 [2.844] 35–100A 125–200A 225–400A 450–600A 700–800A 129.16 1.59 5.085 0.063[] 106.30 1.59 4.185 0.063[] 88.77 1.59 3.495 0.063[] 10.41 [0.410] 22.73 0.89 0.895 0.035[] 4.75 0.15 0.187 0.006[] 14.29 [0.563] 33.27 [1.310] 46.86 [1.845] 21.39 [0.842] 19.18 [0.755] CHICAGO, ILLINOIS 60631 3RD ANGLE PROJECTION B OL-L75QS000 Littelfuse ® REVISION DRWG NO. TITLE C DRWD ATE GRAMS/PIECE FINISH GOOD WT MYORK 4/5/2018 HSINIFCEPS LTAM UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATIN G. TOLERANCING TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994 DENOTES CRITICAL CHARACTERISTICS. DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT AND TRACKING TO BE DEFINED IN LITTELFUSE INSPECTION INSTRUCTIONS. DENOTES CP DIMENSIONS, -MINIMUM CP VALUE MUST BE WITHIN THE DIMENSIONAL LIMITATIONS SHOWN ON DRAWING AND INITIALLY LOCATED TO ALLOW FOR MAXIMUM TOOL LIFE. CPK CP SHEET 1 OF 1 SCALE L75QS SERIES OUTLINE NTS REVISION REV DATE DESCRIPTION A 4/25/18 519200GCP - RELEASE MRY B YRM SECNARELOT EDALB DDA - D/PCE65502591/52/3 111.13 1.59 4.375 0.063[] 95.24 1.59 3.749 0.063[] 84.12 1.59 3.312 0.063[] 73.03 [2.875] 17.02 0.89 0.670 0.035[] 8.73 [0.344] 25.40 0.381 1.000 0.015[] 3.18 0.15 0.125 0.006[] 72.24 [2.844] 73.03 [2.875] 30.94 0.381 1.218 0.015[] 38.10 0.89 1.500 0.035[] 10.41 [0.410] 129.39 1.59 5.094 0.063[] 108.72 1.59 4.280 0.063[] 86.76 1.59 3.416 0.063[] 6.35 0.15 0.250 0.006[] 50.80 0.381 2.000 0.015[] 50.80 0.381 2.000 0.015[] 6.35 0.15 0.250 0.006[] 63.50 0.381 2.500 0.015[] 9.53 0.15 0.375 0.006[] 38.10 0.89 1.500 0.035[] 13.46 [0.530] 180.09 1.59 7.090 0.063[] 156.47 1.59 6.160 0.063[] 89.67 1.59 [2.844] 50.80 0.89 2.000 0.035[] 13.46 [0.530] 173.05 1.59 6.813 0.063[] 142.83 1.59 5.623 0.063[] 103.20 1.59 4.063 0.063[] 72.24 [2.844] 35–100A 125–200A 225–400A 450–600A 700–800A 129.16 1.59 5.085 0.063[] 106.30 1.59 4.185 0.063[] 88.77 1.59 3.495 0.063[] 10.41 [0.410] 22.73 0.89 0.895 0.035[] 4.75 0.15 0.187 0.006[] 14.29 [0.563] 33.27 [1.310] 46.86 [1.845] 21.39 [0.842] 19.18 [0.755] CHICAGO, ILLINOIS 60631 3RD ANGLE PROJECTION B OL-L75QS000 Littelfuse ® REVISION DRWG NO. TITLE C DRWD ATE GRAMS/PIECE FINISH GOOD WT MYORK 4/5/2018 HSINIFCEPS LTAM UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN MILLIMETERS, DIMENSIONS IN BRACKETS [ ] ARE INCHES DIMENSIONING AND DO NOT INCLUDE PLATIN G. TOLERANCING TO BE INTERPRETED IN ACCORDANCE WITH ANSI Y14.5M-1994 DENOTES CRITICAL CHARACTERISTICS. DENOTES CPK DIMENSIONS, -MINIMUM CPK VALUE DENOTES A CHARACTERISTIC THAT PROVIDES AN INDICATION OF PROCESS PERFORMANCE. PROCEDURE FOR MEASUREMENT AND TRACKING TO BE DEFINED IN LITTELFUSE INSPECTION INSTRUCTIONS. DENOTES CP DIMENSIONS, -MINIMUM CP VALUE MUST BE WITHIN THE DIMENSIONAL LIMITATIONS SHOWN ON DRAWING AND INITIALLY LOCATED TO ALLOW FOR MAXIMUM TOOL LIFE. CPK CP SHEET 1 OF 1 SCALE L75QS SERIES OUTLINE NTS REVISION REV DATE DESCRIPTION A 4/25/18 519200GCP - RELEASE MRY B YRM SECNARELOT EDALB DDA - D/PCE65502591/52/3 111.13 1.59 4.375 0.063[] 95.24 1.59 3.749 0.063[] 84.12 1.59 3.312 0.063[] 73.03 [2.875] 17.02 0.89 0.670 0.035[] 8.73 [0.344] 25.40 0.381 1.000 0.015[] 3.18 0.15 0.125 0.006[] 72.24 [2.844] 73.03 [2.875] 30.94 0.381 1.218 0.015[] 38.10 0.89 1.500 0.035[] 10.41 [0.410] 129.39 1.59 5.094 0.063[] 108.72 1.59 4.280 0.063[] 86.76 1.59 3.416 0.063[] 6.35 0.15 0.250 0.006[] 50.80 0.381 2.000 0.015[] 50.80 0.381 2.000 0.015[] 6.35 0.15 0.250 0.006[] 63.50 0.381 2.500 0.015[] 9.53 0.15 0.375 0.006[] 38.10 0.89 1.500 0.035[] 13.46 [0.530] 180.09 1.59 7.090 0.063[] 156.47 1.59 6.160 0.063[] 89.67 1.59 [2.844] 50.80 0.89 2.000 0.035[] 13.46 [0.530] 173.05 1.59 6.813 0.063[] 142.83 1.59 5.623 0.063[] 103.20 1.59 4.063 0.063[] 72.24 [2.844] 35–100A 125–200A 225–400A 450–600A 700–800A 129.16 1.59 5.085 0.063[] 106.30 1.59 4.185 0.063[] 88.77 1.59 3.495 0.063[] 10.41 [0.410] 22.73 0.89 0.895 0.035[] 4.75 0.15 0.187 0.006[] 14.29 [0.563] 33.27 [1.310] 46.86 [1.845] 21.39 [0.842] 19.18 [0.755]

Littelfuse.com/L75QS © 2019 Littelfuse, Inc. Rev: 1-A-0618194 of 13 POWR-SPEED® Fuse L75QS SERIES HIGH-SPEED ROUND BODY Time Current Curve L75QS Series - THIS DATA IS GENERATED IN EXCEL - 1009080 1098 10.90.8 0.7 0.6 0.5 0.4 0.3 0.2 0.10.090.08 0.07 0.06 0.05 0.04 0.03 0.02 0.010.00900.0080 0.0070 0.0060 0.0050 0.0040 0.0030 0.0020 0.00100.00090.0008 0.0007 0.0006 0.0005 0.0004 0.0003 0.0002 0.0001 1009080 1098 10.90.8 0.7 0.6 0.5 0.4 0.3 0.2 0.10.090.08 0.07 0.06 0.05 0.04 0.03 0.02 0.010.00900.0080 0.0070 0.0060 0.0050 0.0040 0.0030 0.0020 0.00100.00090.0008 0.0007 0.0006 0.0005 0.0004 0.0003 0.0002 0.0001 1000009000080000 70000 60000 50000 40000 30000 20000 1000090008000 7000 6000 5000 4000 3000 2000 1000900800 700 600 500 400 300 200 1009080 1098 1000009000080000 70000 60000 50000 40000 30000 20000 1000090008000 7000 6000 5000 4000 3000 2000 1000900800 700 600 500 400 300 200 1009080 1098 BASIS FOR DATA: TEST VOLTAGE: TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER: DRAWN BY: DATE: REVISION: DRAWING NO.: SHEET TIME CURRENT CHARACTERISTIC CURVES LITTELFUSE, INC. CHICAGO, IL. USA

2 OF 7

A DC CURRENT IN AMPERE MELTING (PRE-ARCING) TIME IN SECONDS - 60A - 50A - 40A - 35A

Littelfuse.com/L75QS © 2019 Littelfuse, Inc. Rev: 1-A-0618195 of 13 POWR-SPEED® Fuse L75QS SERIES HIGH-SPEED ROUND BODY - THIS DATA IS GENERATED IN EXCEL - 1009080 1098 10.90.8 0.7 0.6 0.5 0.4 0.3 0.2 0.10.090.08 0.07 0.06 0.05 0.04 0.03 0.02 0.010.00900.0080 0.0070 0.0060 0.0050 0.0040 0.0030 0.0020 0.00100.00090.0008 0.0007 0.0006 0.0005 0.0004 0.0003 0.0002 0.0001 1009080 1098 10.90.8 0.7 0.6 0.5 0.4 0.3 0.2 0.10.090.08 0.07 0.06 0.05 0.04 0.03 0.02 0.010.00900.0080 0.0070 0.0060 0.0050 0.0040 0.0030 0.0020 0.00100.00090.0008 0.0007 0.0006 0.0005 0.0004 0.0003 0.0002 0.0001 50000 40000 30000 20000 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 900 800 700 600 500 400 300 200 100 50000 40000 30000 20000 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 900 800 700 600 500 400 300 200 100 BASIS FOR DATA: TEST VOLTAGE: TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER: DRAWN BY: DATE: REVISION: DRAWING NO.: SHEET TIME CURRENT CHARACTERISTIC CURVES LITTELFUSE, INC. CHICAGO, IL. USA

3 OF 7

A DC CURRENT IN AMPERE MELTING (PRE-ARCING) TIME IN SECONDS - 100A - 90A - 80A - 70A Time Current Curve L75QS Series

Littelfuse.com/L75QS © 2019 Littelfuse, Inc. Rev: 1-A-0618196 of 13 POWR-SPEED® Fuse L75QS SERIES HIGH-SPEED ROUND BODY - THIS DATA IS GENERATED IN EXCEL - 1009080 1098 10.90.8 0.7 0.6 0.5 0.4 0.3 0.2 0.10.090.08 0.07 0.06 0.05 0.04 0.03 0.02 0.010.00900.0080 0.0070 0.0060 0.0050 0.0040 0.0030 0.0020 0.00100.00090.0008 0.0007 0.0006 0.0005 0.0004 0.0003 0.0002 0.0001 1009080 1098 10.90.8 0.7 0.6 0.5 0.4 0.3 0.2 0.10.090.08 0.07 0.06 0.05 0.04 0.03 0.02 0.010.00900.0080 0.0070 0.0060 0.0050 0.0040 0.0030 0.0020 0.00100.00090.0008 0.0007 0.0006 0.0005 0.0004 0.0003 0.0002 0.0001 50000 40000 30000 20000 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 900 800 700 600 500 400 300 200 100 50000 40000 30000 20000 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 900 800 700 600 500 400 300 200 100 BASIS FOR DATA: TEST VOLTAGE: TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER: DRAWN BY: DATE: REVISION: DRAWING NO.: SHEET TIME CURRENT CHARACTERISTIC CURVES LITTELFUSE, INC. CHICAGO, IL. USA

4 OF 7

A DC CURRENT IN AMPERE MELTING (PRE-ARCING) TIME IN SECONDS - 200A - 175A - 150A - 125A Time Current Curve L75QS Series

Littelfuse.com/L75QS © 2019 Littelfuse, Inc. Rev: 1-A-0618197 of 13 POWR-SPEED® Fuse L75QS SERIES HIGH-SPEED ROUND BODY - THIS DATA IS GENERATED IN EXCEL - 1009080 1098 10.90.8 0.7 0.6 0.5 0.4 0.3 0.2 0.10.090.08 0.07 0.06 0.05 0.04 0.03 0.02 0.010.00900.0080 0.0070 0.0060 0.0050 0.0040 0.0030 0.0020 0.00100.00090.0008 0.0007 0.0006 0.0005 0.0004 0.0003 0.0002 0.0001 1009080 1098 10.90.8 0.7 0.6 0.5 0.4 0.3 0.2 0.10.090.08 0.07 0.06 0.05 0.04 0.03 0.02 0.010.00900.0080 0.0070 0.0060 0.0050 0.0040 0.0030 0.0020 0.00100.00090.0008 0.0007 0.0006 0.0005 0.0004 0.0003 0.0002 0.0001 50000 40000 30000 20000 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 900 800 700 600 500 400 300 200 100 50000 40000 30000 20000 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 900 800 700 600 500 400 300 200 100 BASIS FOR DATA: TEST VOLTAGE: TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER: DRAWN BY: DATE: REVISION: DRAWING NO.: SHEET TIME CURRENT CHARACTERISTIC CURVES LITTELFUSE, INC. CHICAGO, IL. USA

5 OF 7

A DC CURRENT IN AMPERE MELTING (PRE-ARCING) TIME IN SECONDS - 400A - 300A - 350A - 250A - 225A Time Current Curve L75QS Series

Littelfuse.com/L75QS © 2019 Littelfuse, Inc. Rev: 1-A-0618198 of 13 POWR-SPEED® Fuse L75QS SERIES HIGH-SPEED ROUND BODY - THIS DATA IS GENERATED IN EXCEL - 1009080 1098 10.90.8 0.7 0.6 0.5 0.4 0.3 0.2 0.10.090.08 0.07 0.06 0.05 0.04 0.03 0.02 0.010.00900.0080 0.0070 0.0060 0.0050 0.0040 0.0030 0.0020 0.00100.00090.0008 0.0007 0.0006 0.0005 0.0004 0.0003 0.0002 0.0001 1009080 1098 10.90.8 0.7 0.6 0.5 0.4 0.3 0.2 0.10.090.08 0.07 0.06 0.05 0.04 0.03 0.02 0.010.00900.0080 0.0070 0.0060 0.0050 0.0040 0.0030 0.0020 0.00100.00090.0008 0.0007 0.0006 0.0005 0.0004 0.0003 0.0002 0.0001 50000 40000 30000 20000 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 900 800 700 600 500 400 300 200 100 50000 40000 30000 20000 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 900 800 700 600 500 400 300 200 100 BASIS FOR DATA: TEST VOLTAGE: TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER: DRAWN BY: DATE: REVISION: DRAWING NO.: SHEET TIME CURRENT CHARACTERISTIC CURVES LITTELFUSE, INC. CHICAGO, IL. USA

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A DC CURRENT IN AMPERE MELTING (PRE-ARCING) TIME IN SECONDS - 600A - 500A - 450A Time Current Curve L75QS Series

Littelfuse.com/L75QS © 2019 Littelfuse, Inc. Rev: 1-A-0618199 of 13 POWR-SPEED® Fuse L75QS SERIES HIGH-SPEED ROUND BODY - THIS DATA IS GENERATED IN EXCEL - 1009080 1098 10.90.8 0.7 0.6 0.5 0.4 0.3 0.2 0.10.090.08 0.07 0.06 0.05 0.04 0.03 0.02 0.010.00900.0080 0.0070 0.0060 0.0050 0.0040 0.0030 0.0020 0.00100.00090.0008 0.0007 0.0006 0.0005 0.0004 0.0003 0.0002 0.0001 1009080 1098 10.90.8 0.7 0.6 0.5 0.4 0.3 0.2 0.10.090.08 0.07 0.06 0.05 0.04 0.03 0.02 0.010.00900.0080 0.0070 0.0060 0.0050 0.0040 0.0030 0.0020 0.00100.00090.0008 0.0007 0.0006 0.0005 0.0004 0.0003 0.0002 0.0001 50000 40000 30000 20000 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 900 800 700 600 500 400 300 200 100 50000 40000 30000 20000 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 900 800 700 600 500 400 300 200 100 BASIS FOR DATA: TEST VOLTAGE: TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER: DRAWN BY: DATE: REVISION: DRAWING NO.: SHEET TIME CURRENT CHARACTERISTIC CURVES LITTELFUSE, INC. CHICAGO, IL. USA

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A DC CURRENT IN AMPERE MELTING (PRE-ARCING) TIME IN SECONDS - 800A - 700A Time Current Curve L75QS Series

Littelfuse.com/L75QS © 2019 Littelfuse, Inc. Rev: 1-A-06181910 of 13 POWR-SPEED® Fuse L75QS SERIES HIGH-SPEED ROUND BODY - THIS DATA IS GENERATED IN EXCEL - 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 800 700 600 500 400 300 200 800 700 600 500 400 300 200 BASIS FOR DATA: TEST VOLTAGE: TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER: DRAWN BY: DATE: REVISION: DRAWING NO.: SHEET I2T CORRECTION FACTOR LITTELFUSE, INC. CHICAGO, IL. USA LLL 01/26/2015 A

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TOTAL CLEARING I2T CORRECTION FACTOR BASIS FOR DATA: TEST VOLTAGE: 200V - 750V DC TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER: DRAWN BY: DATE: REVISION: DRAWING NO.: SHEET I2T VARIATION CURVES LITTELFUSE, INC. CHICAGO, IL. USA LLL 06/26/2018 A

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T otal Clearing I2T Correction Factor Curve L75QS Series

Littelfuse.com/L75QS © 2019 Littelfuse, Inc. Rev: 1-A-06181911 of 13 POWR-SPEED® Fuse L75QS SERIES HIGH-SPEED ROUND BODY - THIS DATA IS GENERATED IN EXCEL - 2000 1800 1600 1400 1200 1000 800 600 400 200 2000 1800 1600 1400 1200 1000 800 600 400 200 800 700 600 500 400 300 200 800 700 600 500 400 300 200 BASIS FOR DATA: TEST VOLTAGE: TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER: DRAWN BY: DATE: REVISION: DRAWING NO.: SHEET ARC VOLTAGE LITTELFUSE, INC. CHICAGO, IL. USA LLL 01/26/2015 A OPERATING VOLTAGE IN VOLTS BASIS FOR DATA: TEST VOLTAGE: 200V - 750V DC TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER: DRAWN BY: DATE: REVISION: DRAWING NO.: SHEET MAX ARC VOLTAGE VARIATION CURVE LITTELFUSE, INC. CHICAGO, IL. USA LLL 06/26//2018 A

Littelfuse.com/L75QS © 2019 Littelfuse, Inc. Rev: 1-A-06181912 of 13 POWR-SPEED® Fuse L75QS SERIES HIGH-SPEED ROUND BODY Watts Loss Correction Factor Curve L75QS Series 0.9 0.9 100 0.8 0.7 0.6 0.8 0.7 0.6 0.5 0.4 0.5 0.4 TOR 0.3 0.3 OSS CORRECTION FACT - 35A - 800A 0.2 0.2 WATTS LO 0.1 0.1 100 PERCENT OF RATED CURRENT (%) BASIS FOR DATA: TEST VOLTAGE: TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER: DRAWN BY: DATE: REVISION: DRAWING NO.: SHEET I2T CORRECTION FACTOR LITTELFUSE, INC. CHICAGO, IL. USA LLL 01/26/2015 A L50S 35-800ABASIS FOR DATA: TEST VOLTAGE: 700V TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER: DRAWN BY: DATE: REVISION: DRAWING NO.: SHEET DERATING CURVE ‐WATTS LOSS CORRECTION LITTELFUSE, INC. CHICAGO, IL. USA LLL 10/30/2015 A

• THIS DATA IS GENERATED IN EXCEL - I2T CORRECTION FACTOR FCC0DERATING CURVE WATTS LOSS CORRECTION FCC08 L70QS

Littelfuse.com/L75QS © 2019 Littelfuse, Inc. Rev: 1-A-06181913 of 13 POWR-SPEED® Fuse L75QS SERIES HIGH-SPEED ROUND BODY T emperature De-rating Curve (temperature of air immediately surrounding fuse) L75QS Series - THIS DATA IS GENERATED IN EXCEL - BASIS FOR DATA: TEST VOLTAGE: TIME CONSTANT/POWER FACTOR: FUSE CATALOG NUMBER: DRAWN BY: DATE: REVISION: DRAWING NO.: SHEET TEMPERATURE RE-RATING CURVE LITTELFUSE, INC. CHICAGO, IL. USA LLL 08/14/2017 A 20% 140°C 284°F 20% 120°C 248°F 80°C 176°F 40°C 104°F -20°C -4°F -40°C -40°F -60°C -76°F 40% 0°C 32°F 20°C 68°F 100°C 212°F 60°C 140°F PERCENT OF UPRATING AMBIENT TEMPERATURE 10% 30% 10% 30% 50% Disclaimer Notice - Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. Littelfuse.com/Product-Disclaimer