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Figure 1
MAIN
OPENING
DEADFRONT
8
10
2
14
DEADFRONT
SUPPORT
FEED-THRU
BASE
OR SUBFEED
RAIL
END
NEUTRAL
CROSS BUS
NOTE: Kits that include a breaker will have the following
items pre-assembled to the breaker and are not included
in the itemized list on this page:
(1) Type JD circuit breaker
(1) breaker support barrier (see item 1)
(2) 1/4"-20 round head screws (see item 9)
(1) breaker support bracket
(All items in the itemized list below are included in this kit
for use as needed for installation per these instructions.)
THIS KIT CONTAINS THE FOLLOWING ITEMS:
ITEM
DESCRIPTION
1
BREAKER SUPPORT BARRIER
2
PHASE CONNECTOR
3
BREAKER ESCUTCHEON
*****
4
MAIN LABEL
5
3/8" NARROW WASHER
6
HELICAL SPRING LOCKWASHER
7
3/8"-16 x 1" HEX HEAD BOLT
8
5/16"-18 x 3/4" HEX HEAD SEMS* ASSEMBLY SCREW
9
1/4"-20 x 2-3/4" PHILLIPS ROUND HEAD THREAD-FORMING SCREW
10
350 kcmil NEUTRAL LUG ASSEMBLY
11
600 kcmil NEUTRAL LUG
12
ANTI-TURN PLATE
13
1/4"-20 x 1" CARRIAGE BOLT
1/4"-20 BELLEVILLE WASHER NUT
14
* SEMS ASSEMBLY SCREWS HAVE A CAPTIVE WASHER ON THE SCREW
** (2) FOR 1Ø, (3) FOR 3Ø
*** (4) FOR 1Ø, (6) FOR 3Ø
**** TORQUE: 72 lb-in for 1/8" CU; 108 lb-in for 3/16" AL
***** 2 ESCUTCHEONS PROVIDED, 1 BIGGER THAN THE OTHER; USE SIZE THAT FITS DEADFRONT OPENING
-2-
4
3
9
6
7
5
MAIN
END
BREAKER
SUPPORT
BRACKET
11
12
NEUTRAL
CROSS BUS
13
QTY
TORQUE
N/A
1
N/A
**
N/A
2
N/A
1
**
N/A
**
N/A
240 lb-in
**
***
****
2
30 lb-in
1
N/A
1
N/A
1
N/A
1
N/A
2
72 lb-in
Installation Instructions
The following instructions are for the installation of a Siemens JD main breaker kit in a 400 amp Revised P1 Panel-
board. The parts provided in this kit are for connection to a 1-phase 2 or 3-wire system or to a 3-phase 3 or 4-wire
system. For all 1-phase systems, disregard the B-phase connector instructions. The breaker is NOT included with
this kit and must be purchased separately. Be sure to choose the appropriate breaker for the voltage, system &
feed location in use. For systems with no neutrals, disregard the neutral connection.
NOTE: Other main breaker kits may include this kit AND a breaker with main breaker support(s) attached.
White text on black background on these pages denote instructions specific to these particular kits (see
list on front cover). (For clarification, DANGER warning below applies to all.)
Bottom-feed mains are reverse fed,
and require Type JXD breakers.
Top-feed mains may be either
Type JD or JXD:
Top-feed Main Breakers:
JD, HJD, JXD, HJXD
Bottom-feed Main Breakers:
JXD, HJXD
1. Lock off all power supplying this equipment
before working on it.
1
2. Remove the deadfront.
For installation as a Main Breaker:
3. To install this kit for main breaker use, remove
the main lugs (if installed).
TOP FEED: Also remove the main breaker
support already installed onto rails. (Save
hardware for mounting of pre-installed support.)
4. Refer to Figure 2 on page 4 to determine the
correct breaker mounting for the panel's feed
location. Also refer to main breaker instructions
for access to mounting holes; breaker covers
may need to be removed for access. Breaker kits
include TA2J6500 Wire Grip Kits (may also be
purchased separately). Install wire grips on the
correct end of the breaker by following Installation
Instructions included with the Wire Grip Kits.
TOP FEED: Install lugs at the ON end of the breaker.
The breaker support bracket is pre-installed on
the breaker ON end. Attach this bracket to the
base rails using the hardware removed in step 3.
Skip to step 5.
BOTTOM FEED: Install lugs at the OFF end of
the breaker.
Leave the pre-installed breaker support bracket
attached to the breaker but note it does not need
to be secured to the base rails. Instead, attach
the breaker to the existing mounted support
bracket (as shown in Fig. 2A on pg. 4) by
following these directions:
Insert both 1/4"-20 x 2-3/4" screws (item 9) through
the appropriate end of the breaker case and through
the outer holes on the support barrier (item 1)
as shown in Figure 1, to retain the barrier during
installation. Fasten the breaker to the support.
5. Position one of the outer breaker connectors
(item 2) so that the single-hole end rests on the
breaker pad and the double-hole end rests on
the panel section or main bus. Note that the
outer connectors are mirror images and are NOT
interchangeable. Attach the connector to the
breaker pad using 3/8"-16 bolt (item 7), a helical
spring lockwasher (item 6) and a plain washer
(item 5) as shown. Do not tighten at this time.
Repeat the process to attach the other outer
connector to the breaker.
DANGER
The P1-400 Panel provides wiring
space for the following cable options:
Hazardous voltage.
For (2) 250 kcmil line cables per
Will cause death or
phase use breaker line lug TA2J6500
serious injury.
or copper lug TC2J6500
Keep out.
For (1) 600 kcmil line cables per
Qualified personnel only.
phase use breaker line lug TA1L6750
Disconnect and lock off all
power before working on
or copper lug TC1J6600
this equipment.
6. 3-Phase panels require a B-phase connection.
Position the B-phase connector so that the single-
hole end rests on the breaker pad and the double-
hole end rests on the panel section or main bus.
Attach the connector to the breaker pad using
the same hardware as the A and C-phases.
Do NOT tighten at this time.
7. Fasten all breaker connectors to the panel section
or main bus using two 5/16"-18 SEMS screws
(item 8) per joint.
8. On 1-phase 3-wire and 3-phase 4-wire systems,
neutral lugs are required. For the 600 kcmil neutral
lug (item 11), insert the 1/4"-20 x 1" carriage bolt
(item 13) through the square hole on the neutral
riser from below, then place the 600 kcmil neutral
lug and the anti-turn plate (item 12) as shown.
Finish with the 1/4"-20 belleville washer nut (item 14).
9. Position the 350 kcmil neutral lug assembly (item 10)
under the neutral riser, allowing the stud to pene-
trate as shown. Fasten it to the riser with a 1/4"-20
belleville washer nut (item 14).
NOTE: If the panelboard is fed by two 250 kcmil
or smaller cables, this lug assembly is used for the
second incoming cable and one of the 1/0 terminations
on the neutral strip is used for a grounding electrode
conductor (if required for service equipment appli-
cations). If the panelboard uses a 600 kcmil cable
for neutral and is being used as service equipment,
the 350 kcmil lug is used for the grounding electrode
conductor.
10. Torque all connections to the values specified on
the Hardware Tightening Torque label affixed to the
rear of the deadfront (or reference assembly instructions
where appropriate).
11. Attach the main cables to the breaker and neutral
terminal and torque connections to values specified
on the device. If no values are listed on the device,
refer to the Hardware Tightening Torque label
affixed to the rear of the deadfront.
12. Remove the main lug blank filler from the deadfront
main opening (if present). Refer again to Figure 3
on page 4 to determine the correct orientation of the
deadfront main breaker escutcheon (item 3) for the
panel's feed location. Insert the breaker escutcheon
into the front of the deadfront.
13. For main breaker applications, apply the "MAIN"
label (item 4) to the breaker escutcheon as shown.
14. Before energizing the panel, ensure that all con-
nections have been properly torqued, that all
circuit breaker terminal covers are secured, that the
deadfront is installed and that all fillers are in place.
11-A-1115-01 Rev. 05
-3-
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