Effective December 2016 Technical Data 1208 Supersedes December 1998 1BS103 modular fuse block, 600 V, 400 A Agency information ® • UL Recognized, Guide IZLT2, File E14853 ® • CSA Certified, Class 6225-01, File 47235 • CE • RoHS compliant Materials • Base - molded black phenolic, 150°C • Mounting bolts - zinc plated steel, 3/8-16 x 3/4” • Washer - zinc plated steel 3/8” Belleville • Connector: tin-plated aluminum Conductors • Connector accepts single 6 AWG - 250 kcmil copper or aluminum, solid or stranded wire Torque • Conductor setscrew - 31.1 N•m (275 Lb-in) Catalog number: • Fuse mounting bolt - 13.6 N•m (120 Lb-in) • 1BS103 Description: Bussmann™ series modular fuse block for bolt-on high speed, and 300 V and 600 V Class T (225-400 A) and select CSA and BS88 fuses. See mounting dimensions table for applicable Bussmann series fuse catalog symbols. Specifications: Ratings • Volts - 600 V • Amps - 400 A • Withstand rating - 200 kA RMS Sym. or the applied fuse interrupting rating, whichever is less Technical Data 1208 1BS103 modular fuse block, 600 V, 400 A Effective December 2016 Dimensions: — mm (in) See Table 1 for A, B and C dimensions per fuse catalog symbol/ampacity. 14.0 CLEARANCE FOR (0.55) SCREW HEAD 32.3 57.2 C L (1.27) (2.25) 6.9 9.9 X MOUNTING HOLE SLOT FOR 1/4" SCREW (0.27) (0.39) 15.0 41.4 'A' (0.59) (1.63) REF. 7.9 (.31) 250 MCM-6 CU-AL 64.3 (2.53) 48.3 (1.90) 42.4 (1.67) 35.6 (1.4) 20.8 12.7 (0.5) (0.82) 79.5 'B' 79.5 8.6 6.4 (0.25) (3.13) REF. (3.13) (0.34) 'C' REF. 6.76 DIA. (0.266) 79.50 79.50 32.23 (3.13) (3.13) (1.269) MOUNTING HOLE ARRANGEMENT Table 1. Mounting dimensions — mm (in) Bussmann series fuse catalog Amp symbol range A B C FWH-_A 225-400 83.8 (3.30) 42.4 (1.67) 201.4 (7.93) FWX-_A 225-400 67.6 (2.66) 26.2 (1.03) 185.2 (7.29) KAC-_ 110-200 109.2 (4.30) 67.8 (2.67) 226.8 (8.93) KBC-_ 225-400 103.1 (4.06) 61.7 (2.43) 220.7 (8.69) _LMT 160-400 58.9 (2.32) 17.5 (0.69) 176.5 (6.95) _P11C* 250-400 184.2 (7.25) 142.7 (5.62) 301.8 (11.88) JJN-_ 225-400 46.7 (1.84) 5.3 (0.21) 164.3 (6.47) JJS-_ 225-400 69.1 (2.72) 27.7 (1.09) 186.7 (7.35) CGL__* 225-400 184.2 (7.25) 142.7 (5.62) 301.8 (11.88) * When used in multiple pole configurations, 25.4 (1.0) should be maintained between adjacent moldings when mounting the fuses indicated. 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 of any 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 Cleveland, OH 44122 Eaton.com Bussmann Division 114 Old State Road Ellisville, MO 63021 Eaton and Bussmann are valuable trademarks United States of Eaton in the U.S. and other countries. You Eaton.com/bussmannseries are not permitted to use the Eaton trademarks without prior written consent of Eaton. Follow us on social media to get the © 2016 Eaton latest product and support information. All Rights Reserved CSA is a registered trademark of the Canadian Printed in USA Standards Group. Publication No. 1208 — SB98107 UL is a registered trademark of the December 2016 Underwriters Laboratories, Inc. Eaton.com/bussmannseries