Expertise Applied | Answers Delivered POWR-SPEED® PRODUCTS HIGH-SPEED FUSES FUSE BLOCKS & HOLDERS MICROSWITCHES FAST-ACTING FUSES

NEW PSR Series High-Speed Square-Body Fuses Now available in case sizes 70 and 73 Plus, expanded ratings for case sizes 71 and 72

POWR-SPEED ® Fuse Catalog CROSS REFERENCE GUIDE High-Speed Round-Body Fuses © 2018 Littelfuse High Speed Products Catalog

Drill Pins Stone-Sand Filled *not shown OPTIMIZED FOR PERFORMANCE AND EFFICIENCY These certified high-speed fuses are optimized for performance and efficiency to better protect your critical power semiconductors against short circuits. How is POWR-SPEED better? Backed by over 40 years of experience, Littelfuse engineered the POWR-Speed line to help you protect critical power electronics from overcurrents that may cause damage to your equipment. High-speed fuses are reliable, very fast-acting products that can reduce the amount of short circuit current and improve the life of your power semiconductor...

Semiconductor FusesCopper Alloy End Plates Alumina High-Grade Ceramic Body Stone Sand Silver-Copper Through-Lay Elements 100% Pure Silver Element Bridges *Round-body style only **Square-body style only © 2018 Littelfuse High Speed Products Catalog 3 littelfuse.com/powr-speed

POWR-SPEED® Fuse Llttelfuse* Expertise Applied | Answers Delivered PSR SERIES HIGH-SPEED SQUARE BODY FUSES Semiconductor Fuses • Flush End • 40 A - 2000 A Specifications Voltage Range Amperage Range Interrupting Range Time Constant Microswitch Mounting Material Approvals Description Littelfuse PSR Series High-Speed Square Body Fuses are specially designed for protection of power semiconductor devices such as diodes, triacs, IGBTs, SCRs, MOSFETs and other solid state devices that are typically designed into power conversion and power conditioning equipment. Variable frequency drives, inverters,...

POWR-SPEED® Fuse ^ Uttelfuse' Expertise Applied | Answers Delivered PSR SERIES HIGH-SPEED SQUARE BODY FUSESElectrical Characteristics CASE SIZE* © 2018 Littelfuse High Speed Products Catalog

POWR-SPEED® Fuse Llttelfuse* Expertise Applied | Answers Delivered

^ Uttelfuse' Expertise Applied | Answers Delivered PSR SERIES HIGH-SPEED SQUARE BODY FUSESDimen s ions DIMENSIONS IN MM (IN) © 2018 Littelfuse High Speed Products Catalog 7 littelfuse.com/powr-speed

POWR-SPEED® Fuse Llttelfuse* Expertise Applied | Answers Delivered 700 VAC/DC • 35-800 A • Traditional Round-Body Bolted Style cSO^us C 6 Specifications Voltage Rating Amperage Rating Interrupting Rating Material Approvals Environmental Country of Origin Operating Temperature Storage Temperature AC: 700V DC: 700V 35 - 800 AC: 200 kA DC: 50 kA Body: Melamine Caps: Copper Alloy (Silver Plated) UL Recognized (E71611) cURus (E71611) RoHS Compliant, REACH Mexico -55C to +125C Up to 35C with Relative Humidity <65% The L70QS Series is a next generation High-Speed Fuse for the protection of power...

POWR-SPEED® Fuse ^ Uttelfuse' Expertise Applied | Answers Delivered L70QS SERIES HIGH-SPEED ROUND-BODY FUSESElectrical Specifications zo So ZSD CD AMPERAGE RATING © 2018 Littelfuse High Speed Products Catalog 9 littelfuse.com/powr-speed

L70QS SERIES HIGH-SPEED ROUND-BODY FUSES Dimensions Millimeters [inches] 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)

POWR-SPEED® Fuse M Littelfuse* Expertise Applied | Answers Delivered 500 VAC/DC • 35-800 A • Traditional Round-Body Bolted Style Specifications Voltage Rating Amperage Rating Interrupting Rating Material Approvals Environmental Country of Origin Operating Temperature Storage Temperature AC: 500V DC: 500V 35 - 800 AC: 200 kA DC: 50 kA Body: Melamine Caps: Copper Alloy (Silver Plated) UL Recognized (E71611) cURus (E71611) RoHS Compliant, REACH Mexico -55C to +125C Up to 35C with Relative Humidity <65% The L50QS Series is a next generation High-Speed Fuse for the protection of power semiconductor...

POWR-SPEED® Fuse Llttelfuse* Expertise Applied | Answers Delivered littelfuse.com/powr-speed 12 © 2018 Littelfuse High Speed Products Catalog

L50QS SERIES HIGH-SPEED ROUND-BODY FUSES Dimensions 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: M8 (5/16”) Recommended Torque: 15 Nm (132.76 in-lb) © 2018 Littelfuse High Speed Products Catalog Stud Size: M12 (1/2”) Recommended Torque: 54 Nm (477.94 in-lb)

POWR-SPEED® Fuse Llttelfuse* Expertise Applied | Answers Delivered 700 VAC • 650 VDC • 10-800 A • Traditional Round-Body Style RoHS ice Specifications Voltage Rating Amperage Rating Interrupting Rating Material Mounting Type Operating Temperature Storage Temperature Approvals Environmental Country of Origin Description Littelfuse L70S Series High-Speed Fuses are designed to protect today's equipment and systems, and are manufactured with Littelfuse-developed technology that sets standards for accuracy, consistent quality, reliability, and predictable performance. Littelfuse engineers have redefined...

POWR-SPEED® Fuse ^ Uttelfuse' Expertise Applied | Answers Delivered L70S SERIES HIGH-SPEED FUSEElectrical Specifications CATALOG NUMBER Dimensions AMPERE FIGURE DIMENSIONS INCHES (MM) © 2018 Littelfuse High Speed Products Catalog 15 littelfuse.com/pow

Expertise Applied | Answers Delivered POWR-SPEED® Fuse L50S SERIES HIGH-SPEED FUSE @®.C€[Rqhs 500 VAC • 450 VDC • 10-800 A • Traditional Round-Body Style Specifications Voltage Rating Amperage Rating Interrupting Rating Material Mounting Type Operating Temperature Storage Temperature Approvals Environmental Country of Origin Description Littelfuse L50S Series High-Speed Fuses are designed to protect today's equipment and systems, and are manufactured with Littelfuse-developed technology that sets standards for accuracy, consistent quality, reliability, and predictable performance. Littelfuse...