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General Information
01.4IB.77020
PowlVac-ND
®
and PowlVac-NDA
™
Series 4
Vacuum Circuit Breakers
A. S
cope
This instruction bulletin is intended to assist
users in the design and safe operation of
these PowlVac-ND® and PowlVac-NDA™ circuit
breakers:
• 05PV36SNDX-4, 1200 & 2000A
• 05PV50SNDX-4, 1200 & 2000A
• 05PV36SNDM-4, 1200 & 2000A
• 05PV50SNDM-4, 1200 & 2000A
• 05PV36NDAX-01 (24-pin; out of production)
• 05PV36NDAX-4, 1200 & 2000A
• 05PV50NDAX-4, 1200 & 2000A
• 05PV36NDAM-4, 1200 & 2000A
• 05PV50NDAM-4, 1200 & 2000A
B. p
urpoSe
The information in this instruction bulletin
is intended to provide the details required
to properly operate and maintain the circuit
breakers described in
This instruction bulletin provides:
1. Guidelines for safety.
2. General descriptions of the operation and
maintenance of the circuit breakers.
3. Instructions for installation and placing the
circuit breakers into service.
4. Instructions for part replacement.
5. Renewal parts lists.
The illustrations contained in this document
may not represent the exact construction
details of each particular type of circuit breaker.
The illustrations in this document are provided
as general information to aid in showing
component locations.
All illustrations and photos are shown using
deenergized equipment.
Follow the appropriate safety precautions
while handling any of the equipment. Failure
to do so may result in death or serious injury.
!
WARNING
To the extent required, the products described
herein meet the applicable ANSI, IEEE, and
NEMA Standards; however no such assurance
is given with respect to local codes and
ordinances because they vary greatly.
c. I
nStructIon
B
ulletInS
A
vAIlABle
e
lectronIcAlly
Changes to the instruction bulletin may be
implemented at any time and without notice.
Go to
to ensure use of the current
instruction bulletin for Powell equipment.
NOTICE
To contact the Powell Service Division call
1.800.480.7273 or 713.944.6900, or email
For specific questions or comments pertaining
to this instruction bulletin email
with the Instruction
Bulletin number in the subject line.
D. A
SSocIAteD
B
ulletInS
• 01.4IB.78000A PowlVac-ND® Metal-Clad
Switchgear
• 01.4IB.78200 PowlVac-NDAR® Arc Resistant
Switchgear
• 01.4IB.51808A Vacuum Type Remote
Racking Device (51897G29)
• 01.4IB.49001 PowlVac® Series 4 Test Cabinet