Technical Data 1208 Effective December 2016
Supersedes December 1998
1BS103 modular fuse block, 600 V, 400 A
Catalog number:
• 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
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)
• Fuse mounting bolt - 13.6 N•m (120 Lb-in)
Eaton.com/bussmannseries
1BS103 modular fuse block, 600 V, 400 A
Technical Data 1208
Effective December 2016
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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 and Bussmann are valuable trademarks
of Eaton in the U.S. and other countries. You
are not permitted to use the Eaton trademarks
without prior written consent of Eaton.
CSA is a registered trademark of the Canadian
Standards Group.
UL is a registered trademark of the
Underwriters Laboratories, Inc.
Eaton
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Eaton.com
Bussmann Division
114 Old State Road
Ellisville, MO 63021
United States
Eaton.com/bussmannseries
© 2016 Eaton
All Rights Reserved
Printed in USA
Publication No. 1208 — SB98107
December 2016
Dimensions: — mm (in)
See Table 1 for A, B and C dimensions per fuse catalog symbol/ampacity.
MOUNTING HOLE ARRANGEMENT
L
C
'C'
'A'
'B'
(1.90)
48.3
8.6
(0.34)
REF.
32.23
(1.269)
(3.13)
05.9705.97
(3.13)
7.9
(.31)
15.0
(0.59)
41.4
(1.63)
(2.53)
64.3
(1.67)
42.4
35.6
(1.4)
79.5
(3.13)
REF.
REF.
(0.82)
20.8
(0.5)
12.7
32.3
(1.27)
DIA.
(0.266)
6.76
9.9
(0.39)
(0.27)
6.9
57.2
14.0
(2.25)
(0.55)
(0.25)
6.4
79.5
(3.13)
250 MCM-6 CU-AL
CLEARANCE FOR
X MOUNTING HOLE SLOT FOR 1/4" SCREW
SCREW HEAD
Table 1. Mounting dimensions — mm (in)
Bussmann series
fuse catalog
symbol
Amp
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.
