Siemens MBKVA5262A Series User manual

MBKVA5262A* or MBKVA5262B*
3VA52 / 3VA61 / 3VA62 Main or
Subfeed Breaker Kit for
P1-250 Panelboard (or P1-400 Subfeed)
Installation
Instructions
11-B-1059-01 Rev. 00
-4-
(for use in Revised P1 Panelboards ONLY)
To confirm, note the part number of the panel (marked on the interior label).
If it ends in an “N” or a “T” it is a “Revised P1” and is compatible with this kit.
(For example: P1E42MC250A is an Original P1; P1E42MC250AT is a Revised P1)
1
1
These instructions do not purport to cover all details or variations in equipment, or to provide for every possible
contingency to be met in connection with installation, operation or maintenance. Should further information be
desired or should particular problems arise, which are not covered sufficiently for the purchaser’s purposes, the
matter should be referred to the local Siemens sales office. The contents of this Instruction manual shall not
become part of or modify any prior or existing agreement, commitment or relationship. The sales contract
contains the entire obligation of Siemens. The warranty contained in the contract between the parties is the sole
warranty of Siemens. Any statements contained herein do not create new warranties or modify the existing
warranty.
Trademarks - Unless otherwise noted, all names identified by ® are registered trademarks of Siemens AG or
Siemens Industry, Inc. The remaining trademarks in this publication may be trademarks whose use by third
parties for their own purposes could violate the rights of the owner.
S
*CAUTION
(Perform these steps prior to following the installation instructions that start on page 2.)
* Necessary changes for older 250A or 400A RP1 Panels:
NOTE: Perform these steps only if the panel does NOT list this kit for use.
1. Replace all four Deadfront Supports with one of these kits (per application):
For 250A Panels:
Feed-through Panels -- use kit P1DFS250AFT
NON-feed-through Panels -- use kit PDFS250ANFT
For 400A Panels:
All panels -- use kit P1DFS400A
NOTE: New Deadfront Supports are constructed of 8 gage steel (approximately 0.17” thick)
2. Replace any Main or Subfeed Blank Filler Plates that will remain AFTER the installation of this kit.
For 250A Panels Main or Subfeed Space -- use kit DFFP01B (Siemens part number 11-D-4612-01)
For 400A Panel Main Space -- use kit DFFP01C (Siemens part number 11-D-4600-01)
3. Replace all one inch Branch Filler Plates with DFFP1A (order as many as are needed)
(Do NOT use any other fillers such as QF3 or DFFP1. Although these may fit into the panel, they are not
suitable for use in this application.)
P1DFS250AFT P1DFS250ANFT P1DFS400A
Rear of
DFFP01B
Rear of
DFFP01C
QF3 DFFP1 DFFP1A
Also for 3VA
breaker kits
with breaker
INCLUDED.
Part numbers:
MBKVAM3150A
MBKVAM3200A
MBKVAM3225A
MBKVAM3250A
MBKVAH3200A
MBKVAH3250A
This kit MAY require additional kits (PURCHASED SEPARATELY), depending on the year this panelboard
was manufactured (shown as Date on the rating label on the front of the deadfront):
BEFORE 2020: Panelboards REQUIRE installation of the kits noted on page 4 (deadfront supports, blank
fillers and branch filler plates) in addition to this kit (MBKVA5262A or MBKVA5262B)
AFTER 2020: This kit (MBKVA5262A or MBKVA5262B) should be used without the need of additional kits
WITHIN 2020: If kit (MBKVA5262A or MBKVA5262B):
Is NOT listed on the kit label (on the rear of the deadfront), follow the BEFORE 2020 instructions
Is listed on the kit label, follow the AFTER 2020 instructions

Installation Instructions
11-B-1059-01 Rev. 00
-3-
-2-
DANGER
Hazardous voltage.
Will cause death or
serious injury.
Keep out.
Qualified personnel only.
Disconnect and lock off all
power before working on
this equipment.
15. Torque all connections to the values specified in
these instructions or on the Hardware Tightening
Torque label affixed to the rear of the deadfront.
8. Position the Strap and Barrier Assembly (Item 1) at
the MAIN END of the panel. (See Fig. 1)
Ensure the straps are
properly snapped into the
barrier and then align them
below the panel bus.
14. For 1-phase 3-wire and 3-phase 4-wire systems,
the Neutral Lug Assembly (Item 6) is required.
The Neutral Lug Assembly arrives in the kit ready
to assemble at any open corner. Install by
positioning it below the neutral cross bus or the
neutral lug pad, inserting the exposed stud
through the appropriate hole and
securing with the
1/4”-20 belleville washer nut (part of Item 6).
The following instructions are for the installation of a Siemens main or subfeed breaker kit for Type 3VA52 (MFAS, HFAS
or CFAS), Type 3VA61 (MDAE, HDAE or CDAE) or Type 3VA62 (MFAE, HFAE or CFAE) breakers in Revised P1
Panelboards. The kit may be installed as a main or a subfeed in panels rated 250 amps or less. For Revised P1 400A
panels, it may be installed in subfeed applications ONLY (see Fig. 2). The parts provided enable connection to a 1-phase,
2 or 3-wire system with the use of kit MBKVA5262A or for connection to a 3-phase, 3 or 4-wire system with the use of kit
MBKVA5262B. The breaker is NOT included with this kit and must be purchased separately. Be sure to choose the
appropriate breaker for the system in use. For systems without neutrals, disregard the neutral connection instructions.
9. Loosely fasten the Strap and Barrier Assembly to
the Base Rails with
two #10-24 screws (Item 4)
and
the straps to the phase bus with 1/4”-20 SEMS
screws (Item 2). Do not tighten at this time.
13. Torque all connections to the values specified in
these instructions or on the Hardware Tightening
Torque label affixed to the rear of the deadfront.
16. 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 device manual or the Hardware
Tightening Torque label affixed to the rear of the
deadfront.
17. Remove the blank filler or escutcheon installed on
any deadfront opening in the area that will cover
this kit. Install the Escutcheon (Item 7) provided
with this kit into the front of the deadfront as shown.
For detailed filler plate installation instructions,
refer to instruction sheet 11-B-1061-01 (included
in this kit).
18. For main breaker applications, apply the “MAIN”
labels (Item 8) on the front of the deadfront, near
the breaker escutcheon, as shown.
19. Before energizing the panel, ensure that all
connections have been properly torqued, the
deadfront is installed and all fillers are in place.
20. Follow Steps 1 through 17, except that the kit
must be installed at the feed-thru or subfeed end
of the panel and any pre-existing assembly at that
location must be removed prior to installation of
this kit. In addition, do NOT install the “MAIN”
labels (skip Step 18). Finish with Step 19.
For installation as a main breaker:
For installation as a subfeed breaker:
1. Lock off all power supplying this equipment
before working on it.
3. Remove the Main / Subfeed lugs (if installed).
2. Remove the deadfront.
(For 250A panels ONLY)
MAIN
END
FEED-
THRU
OR
SUBFEED
END
P1-400 PANELBOARD WITH SUBFEED BREAKER
Fig. 4
5. Locate the Breaker Hardware Kit (Item 5) and the
breaker (SOLD SEPARATELY).
Prepare the breaker:
6. Select the proper nut keepers and slide them
under each phase of the breaker stabs on the
“ON”-side of the breaker. They “click” into place
when properly inserted. (See Fig. 3)
NOTE: Hardware Kit includes two sets of Nut
Keepers; one set for 3VA52 breakers and one set
for 3VA61 / 3VA62 breakers.
10. Orient the breaker such that the “ON”-side (with
Bus Extensions) fits onto the barrier carefully
aligned with the two fins and bus straps. The
“OFF”-side breaker mount holes are aligned with
the inner inserts for 3VA52 breakers and outer
inserts for 3VA61/3VA62 breakers. Breaker
terminals 1, 3 & 5 and 2, 4 & 6 should align with
the numeric markings on the barrier (See Fig. 2)
12. Loosely fasten the breaker “OFF”-side to the
Strap and Barrier Assembly using two #8-32 x 3”
Breaker Mounting Screws (part of Item 5) and
torque to 13.3 ± 1.8 lb-in.
NOTE: Do not use any breaker mounting screws
shipped with the breaker in this assembly.
7. Place a bus extension (part of Item 5) on top of
each phase of the breaker stabs, with the smaller
hole towards the breaker and with the anti-turn
protrusions down. Loosely secure each phase with
socket-head screws. Do not tighten at this time.
3-PHASE
P1-250
MAIN
END
FEED-THRU
OR
SUBFEED
END
1
5
2
DEADFRONT
SUPPORT
BASE
RAIL
NEUTRAL
LUG PAD
NEUTRAL
CROSS BUS
6
7
Fig. 1
4
3
8
DEADFRONT
4. Review the details at the bottom of page 1 and
the top of page 4. If these other parts are
needed, order and install them prior to continuing.
Refer to the Hardware Kit BBKVA5262P2HW (Item 5) instruction sheet
(11-B-1050-01) for more detail, but use the torques on this instruction.
SOCKET-HEAD
SCREW
BUS
EXTENSION
NUT KEEPER
“ON”
SIDE OF
BREAKER
(Breaker NOT included)
“OFF” SIDE OF
BREAKER
Fig. 3
11. Loosely fasten the breaker “ON”-side to the Strap
and Barrier Assembly using one 5/16”-18 screw
(Item 3) for each strap.
STRAP AND BARRIER ASSEMBLY 1
1/4”-20 x 1/2” HEX HEAD SEMS* ASSEMBLY SCREW
#10-24 x 7/16” SLOTTED HEX WASHER THREAD-FORMING SCREW
** (2) for 1Ø, (3) for 3Ø
**
2
1
2
3
4
5/16”-18 x 3/4” SOCKET HEAD CAP MACHINE SCREW
**
5
6
* SEMS assembly screws have a captive washer on the screw
THIS KIT CONTAINS THE FOLLOWING ITEMS:
ITEM QTY
DESCRIPTION
N/A
30 lb-in
TORQUE
72 lb-in
177 lb-in
1
3VA52 / 3VA62 HARDWARE KIT FOR P2 / P3, 1-PH / 3-PH N/A
1
NEUTRAL LUG ASSEMBLY N/A
MAIN LABEL
2
8N/A
BREAKER ESCUTCHEON
1
7N/A
KEY:
(Kit No. BBKVA5262PHW)
TO SECURE
SERVICE
ENTRANCE
BARRIER
3VA61/62
BREAKER
MOUNT
HOLES
3VA52
BREAKER
MOUNT
HOLES
TORQUE TO
13.3±1.8 lb-in
Fig. 2
BARRIER DETAIL
(SINGLE-PHASE SHOWN)
NOTE: Kits that include a breaker will have
the following items pre-assembled to the
breaker and are not included as separate parts:
(1) Type 3VA circuit breaker
(2) #8-32 socket-head thread-forming screws
(1) strap and barrier assembly
(1) 3VA52/3VA62 hardware kit
NOTE: Some main breaker kits may include this kit AND a breaker with the strap and barrier assembly
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.)
For pre-installed breaker kits (list on page 1),
skip the “Prepare the breaker” instructions
For pre-installed breaker kits (list on page 1),
skip Steps 10, 11 and 12 For pre-installed breaker kits (list on page 1),
follow Steps 1-4, 8-9, 13-17 and 19.