
Power Distribution Centers
38.1
[1.50]
38.1
[1.50]
19.1
[0.75]
6.4
[0.25]
3/8-16 NUT
USED ON BOTH
SIDES OF BLOCK
3/8-16 BOLTS
PLASTIC BODY
LOCKNUT
STUD CAPS
USED ON BOTH
SIDES OF BLOCK
R16.7
[R0.66]
28.7
[1.13]
TYPICAL PANEL CUTOUT
HIGH CURRENT SINGLE STUD FEED-THRU
Specifications
Rating: 400A
Locknut Torque: 54.2 Nm
Body Mounting Nut Torque: 13.6 Nm
Materials: Body-Nylon 66 (120˚C)
Contact - Copper 110
Studs - Zinc-plated steel
Locknut - Zinc-plated steel
Body nut - Nylon 66
Stud caps - PVC
Operating Temperature Range: -40˚C - 125˚C
Dimensions
Dimensions in mm
Description
Our 3/8” pass-thru stud has a high electrical rating and low
resistance due to a large cross-sectional contact area. It also uses
highly conductive materials to outperform the competition.
This pass-thru stud boasts high installation torque values to allow
the use of large cable sizes for high current applications. Stud caps
are included to protect from accidental shorts.
The pass-thru stud is available with red or black body and stud cap
to help color-code circuits in the vehicle. A plastic body locknut
ensures quick and easy firewall-mount installation without the
need for additional hardware.
Ratings
Part Number Color
JBPT0001Z Red
JBPT0002Z Black
99
www.littelfuse.com © 2012 Littelfuse • Transportation Products Catalog

Power Distribution Centers
SINGLE STUD JUNCTION BLOCKS (FEED-THRU & NON-FEED-THRU)
Specifications
Materials: Body: UL 94V-0 Thermoplastic
Stud: Stainless steel
Conductive Core: Plated copper
Hardware: Lockwashers and nuts available;
Protective stud caps available (red or
black to match body color)
Thread Sizes: Various available options
Operating Temperature Range: -40˚C - 125˚C
Description
Junction Blocks are used as electrical connection points for the
distribution of power or ground. These blocks can simplify cabling
& architectures, and serve as convenient power tap points. Feedthru versions enable firewall-mount applications and help reduce
wiring costs and overall space required for cable routing.
Junction blocks are available in various thread sizes and lengths.
Lock washers and nuts are included with each block. Stud caps
are also available for protection from accidental shorts.
Contact Littelfuse for more sizes not shown.
100
© 2012 Littelfuse • Transportation Products Catalogwww.littelfuse.com

Power Distribution Centers
Junction Blocks
SINGLE STUD JUNCTION BLOCKS (FEED-THRU & NON-FEED-THRU)
Dimensions
Dimensions in mm
A
K
47.6
28.6
A
K
19.1
A
K
19.1
(4) L
MOUNTING
HOLES
F
H
J
THREAD SIZE M
B
C
FIGURE 1
(2) L
MOUNTING
HOLES
B
D
H
E
F
J
G
THREAD SIZE
C
D
E
G
M
FIGURE 2 FIGURE 3
(2) L
MOUNTING
HOLES
F
J
THREAD SIZE M
B
C
H
PART NUMBER FIGURE A B C D E F G H J K L M COLOR
JBPT2P01ZXR 1 69.8 38.1 31.7 31.7 28.6 9.5 28.6 4.8 4.8 50.8 ø5.6 hole with ø11.2 C'bore x 4.1deep ½-13 RED
JBPT2N02ZXB 1 69.8 36.6 31.7 38.1 28.6 9.5 NONE 4.8 NONE 50.8 ø5.6 ½-13 BLACK
JBPT2N03ZXB 1 69.8 36.3 31.7 38.1 28.6 9.5 NONE 4.8 NONE 50.8 ø5.6 5/16-18 BLACK
JBPT3P01ZXB 2 52.4 23.8 17.5 22.2 17.5 7.9 23.8 1.6 1.6 33.3 ø5.6 hole with ø10.4 C'bore x 3.6 deep 3/8-16 BLACK
JBPT3P02ZXB 2 52.4 22.2 15.9 15.9 28.6 7.9 23.8 1.6 1.6 33.3 ø5.6 hole with ø10.4 C'bore x 3.6 deep 3/8-16 BLACK
JBPT3N03ZXB 2 54.0 24.9 15.9 22.2 17.5 7.9 NONE 1.6 NONE 34.9 ø5.6 hole with ø9.4 C'bore x 3.6 deep 3/8-16 BLACK
JBPT3N03ZXR 2 54.0 24.9 15.9 22.2 17.5 7.9 NONE 1.6 NONE 34.9 ø5.6 hole with ø9.4 C'bore x 3.6 deep 3/8-16 RED
JBPT4P01ZXB 3 52.4 17.5 11.2 15.9 17.5 7.9 17.5 1.6 1.6 33.3 ø5.6 hole with ø10.4 C'bore x 3.6 deep ¼-20 BLACK
D
E
G
www.littelfuse.com © 2012 Littelfuse • Transportation Products Catalog