Technical Data 2070 Effective December 2016
Supersedes December 1998
Feed-through and standalone stud type junction blocks
Catalog symbols:
• C19_
• C27_
• C29_
• C40_
• C58_
• C63_
• JB38_
Description:
Bussmann™ series feed-through and standalone
stud type junction blocks for heavy-duty ground or
power connection points in AC or DC circuits.
Modular construction offers design and
manufacturing flexibility with mounting options
well suited for transformers, communication and
computer power sections along with various
vehicle electrical systems.
Studs
• Non-feed-through junction blocks are plated
steel
• Feed-through junction blocks are copper alloy
Note: Voltage rating dependent upon installation
Suggested maximum termination ratings
Stud size/thread/ Amps
#10-32 50
#1/4-20 100
#5/16-18 200
#3/8-16 250
#1/2-20 400
Eaton.com/bussmannseries
Feed-through and standalone stud type junction blocks
Technical Data 2070
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.
Eaton
1000 Eaton Boulevard
Cleveland, OH 44122
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. 2070 — BU-SB98107
December 2016
Catalog numbers and dimensions — in (mm)
Catalog
no. Fig. A B C D E F G H J K L M Material Color
C2791* 2 2.06 (52.4) 0.69 (17.5) 0.44 (11.2) 0.62 (15.9) 0.69 (17.5) 0.31 (7.9) 0.69 (17.5) 0.06 (1.6) 0.06 (1.6) 1.31 (33.3)
0.22 dia. w/.41
dia. C’bore x .14
deep
1/4-20 Thermoset Black
C2909* † 22.06 (52.4) 0.69 (17.5) 0.44 (11.2) 0.62 (15.9) 1.0 (25.4) 0.31 (7.9) 0.69 (17.5) 0.06 (1.6) 0.06 (1.6) 1.31 (33.3)
0.22 dia. w/.41
dia. C’bore x .14
deep
10-32 Thermoset Black
C2909-1* 2 2.06 (52.4) 0.69 (17.5) 0.44 (11.2) 0.62 (15.9) 1.0 (25.4) 0.31 (7.9) 0.69 (17.5) 0.06 (1.6) 0.06 (1.6) 1.31 (33.3)
0.22 dia. w/.41
dia. C’bore x .14
deep
1/4-20 Thermoset Black
C1938* 2 2.06 (52.4) 0.94 (23.8) 0.69 (17.5) 0.87 (22.2) 0.69 (17.5) 0.31 (7.9) 0.87 (22.2) 0.06 (1.6) 0.06 (1.6) 1.31 (33.3)
0.22 dia. w/.41
dia. C’bore x .14
deep
3/8-16 Thermoplastic Black
C1925* † 12.75 (69.8) 1.5 (38.1) 1.25 (31.7) 1.25 (31.7) 1.12 (28.6) 0.37 (9.5) 1.12 (28.6) 0.19 (4.8) 0.19 (4.8) 2.0 (50.8)
0.22 dia. w/.44
dia. C’bore x .16
deep
1/2-13 Thermoplastic Red
C4044* † 22.06 (52.4) 0.87 (22.2) 0.62 (15.9) 0.62 (15.9) 1.12 (28.6) 0.31 (7.9) 0.87 (22.2) 0.06 (1.6) 0.06 (1.6) 1.31 (33.3)
0.22 dia. w/.41
dia. C’bore x .14
deep
3/8-16 Thermoplastic Black
C5898* † 22.06 (52.4) 0.94 (23.8) 0.69 (17.5) 0.87 (22.2) 0.69 (17.5) 0.31 (7.9) 0.87 (22.2) 0.06 (1.6) 0.06 (1.6) 1.31 (33.3)
0.22 dia. w/.41
dia. C’bore x .14
deep
3/8-16 Thermoplastic Red
JB3816-2 2 2.12 (54.0) 1.0 (25.4) 0.62 (15.9) 0.94 (23.8) 0.69 (17.5) 0.31 (7.9) None 0.06 (1.6) None 1.37 (34.9)
0.22 dia. w/.37
dia. C’bore x .14
deep
3/8-16 Thermoplastic Black
JB3816-3 2 2.12 (54.0) 1.0 (25.4) 0.62 (15.9) 0.94 (23.8) 0.69 (17.5) 0.31 (7.9) None 0.06 (1.6) None 1.37 (34.9)
0.22 dia. w/.37
dia. C’bore x .14
deep
3/8-16 Thermoplastic Red
C1933 † 12.75 (69.8) 1.44 (36.6) 1.25 (31.7) 1.5 (38.1) 1.12 (28.6) 0.37 (9.5) None 0.19 (4.8) None 2 (50.8) 0.22 dia. 1/2-13 Thermoplastic Black
C1933-1 † 12.75 (69.8) 1.44 (36.3) 1.25 (31.7) 1.5 (38.1) 1.12 (28.6) 0.37 (9.5) None 0.19 (4.8) None 2 (50.8) 0.22 dia. 5/16-18 Thermoplastic Black
C6344-1 2 2.12 (54.0) 0.62 (15.9) 0.62 (15.9) 0.87 (22.2) 0.69 (17.5) 0.31 (7.9) None 0.06 (1.6) None 1.37 (34.9)
0.22 dia. w/.37
dia. C’bore x .14
deep
1/2-20 Thermoplastic Black
* Feed-through options – Nuts and washers; consult factory.
† Not RoHS compliant.
F
JH
GED
CB
M (thread size)
1.87"
(47.6)
0.75"
(19.1)
1.12"
(28.6)
KAKA
L (4 mtg. holes) L (2 mtg. holes)
Fig. 1
(Catalog numbers C1925, C1933, C1933-1)
Fig. 2
(All other catalog numbers
)
