BUSSMANN Effective November 2020 Technical Data 1037 Supersedes June 2016 SERIES Stud-mounted fuses one-time Catalog symbol: ALS- Catalog numbers (amps) ALS-200 ALS-250B ALS-350B ALS-500B Description: ALS-200B ALS-300 ALS-400 ALS-550 Bussmann series stud-mounted, one-time ALS-225 ALS-300A ALS-400B ALS-600 fuse. ALS-225B ALS-300B ALS-450 ALS-250 ALS-350 ALS-500 Specifications: Ratings Volts - 125 Vdc (or less) 80 Vdc - (300A) 48 Vdc - (200-250 A), (350-500 A) Amps - 200-600 A Interrupting rating 5 kA - (200-500 A) Agency information UL Recognized, Guide JFHR2, File E56412 Dimensions: A B C E F D G Dimensions - in: System voltage A B C D E F G 3.75 2.7 2.25 0.75 0.375 1.06 1.13 ALS 200-500 95.3 68.6 57.2 19.1 9.53 26.85 28.6 4.25 2.38 2.38 1.25 0.531 1.59 1.81 ALS 550-600 107.95 60.5 60.5 31.75 13.5 40.4 46.1Technical Data 1037 ALS Effective November 2020 Stud-mounted fuses one-time Time-current curvesaverage melt Amp rating 100 10 1 0.1 0.01 Current in amps x 10 The only controlled copy of this data sheet is the electronic read-only version located on the Eaton network drive. All other copies of this document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Eaton reserves the right, without notice, to change design or construction ofany products and to discontinue or limit distribution of any products. Eaton also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications. Eaton 1000 Eaton Boulevard For Eatons Bussmann series Cleveland, OH 44122 product information, United States Eaton.com call 1-855-287-7626 or visit: Eaton.com/bussmannseries Bussmann Division 114 Old State Road Ellisville, MO 63021 United States Eaton, Bussmann and Low-Peak are Eaton.com/bussmannseries valuable trademarks of Eaton in the US and other countries. You are not permitted 2020 Eaton to use the Eaton trademarks without prior Follow us on social media to get the All Rights Reserved written consent of Eaton. latest product and support information. Printed in USA Publication No. 1037 SB04068 UL is a registered trademark of the November 2020 Underwriters Laboratories, Inc. Time in seconds 10 200 300 500 100 600 1000 4000