Siemens-Allis LBS Series Manuale utente

SIEMENS

ALLIS

IONS

LOAD

BREAK

SWITCH

INSTALLATION

OPERATION

MAINTENANCE

TYPE

LBS

ICD

6028

3498

Courtesy of NationalSwitchgear.com

TABLE

CONTENTS

Page

ELECTRICAL

Conduit

Cable

Connections

Secondary

Connections

FINAL

INSPECTION

AND

TESTING

INTRODUCTION

GENERAL

INFORMATION

WARRANTY

GENERAL

DESCRIPTION

INTERLOCKING

FEATURES

APPLICATION

RECEIVING

Unloading

Shipment

Inspection

Uncrating

Storing

OPERATION

SEQUENCE

OPERATION

—

OPERATOR

SEQUENCE

OPERATION

—

SWITCH

CONTACTS

INSTALLATION

DRAWINGS

MECHANICAL

Foundation

Erection

MAINTENANCE

PERIODIC

INSPECTION

SWITCH

OPERATION

AND

ADJUSTMENT

TOUCH

PAINT

REPLACEMENT

PARTS

The

information

contained

within

intended

assist

operating

per

sonnel

providing

information

the

general

characteristics

equipment

this

type

does

not

relieve

the

user

responsibility

use

sound

Practices

and

Safety

Procedures

the

installation

application

operation

and

maintenance

the

particular

equipment

purchased

drawings

other

supplementary

instructions

for

specific

applica

tions

are

forwarded

with

this

manual

separately

they

take

prece

dence

over

any

conflicting

incomplete

information

this

manual

Courtesy of NationalSwitchgear.com

INTRODUCTION

PHASE

BARRIERS

ARC

CHUTES

MAIN

STATIONARY

CONTACTS

MAIN

MOVING

CONTACTS

PYRO

SHIELD

INSULATORS

QUICK

BREAK

BLADE

233115

Fig

—

Type

LBS

Load

Break

Switch

baseplate

These

glass

polyester

insulators

are

flame

tardant

track

resistant

and

have

high

impact

strength

They

are

securely

bolted

the

mounting

plate

and

termi

nals

prevent

live

parts

from

rotating

Phase

separators

are

also

made

Pyro

Shield

insulation

Main

Stationary

Contacts

are

high

pressure

silver

copper

line

contacts

large

copper

mass

immediately

adj

acent

the

contacts

serves

conduct

heat

generated

momentary

overcurrents

away

from

the

contact

surfaces

Main

contacts

are

the

knife

blade

type

closing

the

blade

engages

with

the

stationary

contacts

ahead

the

contacts

inside

the

interrupter

This

enables

the

switch

against

fault

currents

Main

Moving

Contacts

are

high

conductivity

hard

drawn

copper

bars

with

rounded

edges

Quick

Break

Blades

are

made

silver

plated

phosphor

bronze

with

silver

tungsten

the

interrupter

tip

and

the

restraining

contacts

Silver

used

for

its

high

conduc

tivity

and

tungsten

because

its

high

melting

point

The

quick

break

blades

are

pivot

mounted

one

side

the

main

blades

with

stainless

steel

spring

mounted

parallel

the

main

blades

Arc

Chutes

are

formed

from

material

especially

selected

for

its

arc

extinguishing

properties

The

chute

contains

pair

silver

tungsten

tipped

restraining

contacts

which

engage

the

quick

break

blade

when

the

closed

position

The

necessary

spring

pressure

supplied

pair

phosphor

bronze

compression

springs

inside

the

arc

chute

GENERAL

INFORMATION

This

instruction

book

acquaint

the

purchaser

user

with

the

Siemens

All

Type

LBS

Load

Break

Switch

stallation

and

maintenance

instructions

are

provided

the

appropriate

sections

spare

parts

list

the

end

the

book

provides

list

the

serviceable

parts

WARRANTY

For

warranty

coverage

see

the

sales

contract

The

equip

ment

described

has

been

supplied

operate

system

having

circuit

capacity

specified

the

customer

for

any

reason

the

equipment

should

used

different

system

the

short

circuit

capacity

the

system

should

increased

the

momentary

rating

the

switch

the

terrupting

capacity

the

fuses

and

the

bus

capacity

should

checked

Failure

the

part

the

user

receive

approval

intended

changes

from

the

supplier

may

cause

voiding

the

warranty

GENERAL

DESCRIPTION

—

See

Fig

The

Type

LBS

Load

Break

Switch

manually

operated

single

throw

gang

operated

disconnect

with

quick

break

blades

and

arc

chute

interrupters

The

switch

employs

quick

break

and

make

mechanism

and

spring

operated

over

center

linkage

which

assures

positive

closing

force

and

fast

uniform

interruption

speed

Construction

features

the

basic

switch

parts

are

Pyro

Shield

Insulators

provide

switch

clearance

from

the

Courtesy of NationalSwitchgear.com

The

manual

front

mounted

operator

smoothly

and

posi

tively

provides

interruption

load

and

transformer

mag

netizing

currents

mechanical

interlock

prevents

the

switch

door

from

being

opened

when

switch

closed

position

safety

glass

window

allows

inspection

switch

blade

position

When

fuses

are

provided

with

600

amp

load

break

switch

single

inch

high

compartment

the

fuses

are

connected

the

load

side

the

switch

This

enables

per

sonnel

change

fuses

without

using

hot

stick

fuse

discharge

gases

are

produced

that

could

contaminate

the

switch

arc

chutes

See

Fig

The

600

amp

load

break

switch

mounted

compartment

inches

deep

inches

wide

and

inches

high

The

1200

amp

load

break

switch

occupies

com

partment

inches

deep

inches

wide

and

inches

high

Both

the

600

and

1200

amp

load

break

switches

are

com

patible

with

theSpaceMakerII

high

voltage

controller

with

without

bus

When

fuses

are

provided

the

bottom

the

switch

com

partment

this

feature

restricts

access

them

until

the

switch

has

been

opened

remove

power

from

them

When

Type

LBS

switches

mounted

upper

compartment

are

used

isolate

high

voltage

circuits

the

corresponding

lower

compartments

mechanical

interlocking

provided

the

lower

compartment

doors

cannot

opened

until

the

switches

the

upper

compartments

are

the

open

posi

tion

Key

interlock

systems

are

also

available

for

safety

quence

interlocking

compartment

doors

feeder

circuit

breakers

isolating

switches

other

load

break

switches

etc

Two

key

interlock

units

can

mounted

and

used

simultaneously

provide

increased

system

flexibility

key

interlock

mounted

the

top

location

the

operator

mechanism

permits

the

switch

locked

the

open

position

only

key

interlock

mounted

the

bottom

loca

tion

permits

the

switch

locked

either

the

open

closed

position

CAUTION

INTERLOCKING

FEATURES

Only

one

key

per

interlock

sequence

available

operating

personnel

The

Type

LBS

load

break

switch

operators

are

also

sup

plied

with

padlocking

provisions

The

load

break

switch

compartment

doors

are

mechani

cally

interlocked

they

cannot

opened

until

the

switch

the

open

position

HOl

BOCTS

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MOLCS

KHCHOR

BOLTS

COM

D U

I T

SPfcCCIM

TOP

O P

CUSlClt

COM

SPKCl

)

TOf

CVJSICCC

‘

’

PRIMW

COMDUIT

FPKC

COWDu

IPKC

JiLJL

COUDlMY

SPKC

TOP

VIEW

tin

FLOOR

TOP

UEMi

FLOOR

PLkKl

IVJS

DUCT

MHC

—

‘

)

‘

•

CURR

TfckWSF

SPECIFIC

WHIN

ruses

Kut

MOT

sptcmoDi

rir

SWITCH

SPSClFtCD

POT

TRKMSF

I F

sreciricb

VII

lCW

FRONT

600

AMP

1200

AMP

Fig

—

Type

LBS

Load

Break

Switch

Dimensions

Courtesy of NationalSwitchgear.com

Certain

applications

the

Type

LBS

load

break

switches

may

result

the

main

moving

contacts

well

the

main

stationary

contacts

being

energized

although

the

switch

the

open

position

This

condition

occurs

when

the

switches

are

used

for

bus

tie

multiple

incoming

line

feed

reversing

and

similar

applications

such

situations

complete

interlocking

protection

not

always

possible

;

for

often

the

existing

power

system

must

volved

Warning

signs

are

provided

compartment

doors

indicate

that

main

moving

contacts

both

sides

the

switch

may

energized

when

the

switch

the

open

position

When

such

conditions

occur

the

user

supply

proper

sequence

interlocking

with

existing

isolating

cir

cuit

breakers

switches

RECEIVING

Unloading

Lifting

angles

are

mounted

both

the

right

and

the

left

sides

for

safe

easy

handling

These

may

removed

after

installation

complete

Shipment

Inspection

soon

the

load

break

switch

received

carefully

inspect

for

damage

shortage

Examine

all

shipping

crates

before

uncrating

attempted

this

determine

damage

has

occurred

transit

damage

the

crating

detected

make

thorough

inspec

tion

the

contents

Check

the

entire

shipment

against

the

packing

list

espe

cially

when

accessories

are

specified

sure

that

items

were

lost

omitted

NOTE

any

damage

shortage

has

occurred

deter

mine

the

extent

and

notify

the

carrier

and

your

Siemens

Allis

sales

office

immediately

Proper

notation

should

made

the

freight

bill

pre

vent

any

controversy

when

claim

made

This

notation

also

facilitates

adjustments

Table

shows

the

ratings

the

Type

LBS

Load

Break

Switch

which

are

accordance

with

NEMA

ASA

and

IEEE

standard

SWITCH

TYPE

VOLTAGE

FUSED

UNFUSED

2500

2300

5000

4160

4800

1200

Continuous

Ampere

Rating

Ampere

Interrupting

Capacity

Switch

Fault

Amps

(

Asym

)

Momentary

Current

Amps

Max

Transformer

Phase

kva

load

BIL

rating

450

600

1200

600

80.000

000

40.000

000

1500

2500

3000

60 60

TABLE

—

Type

LBS

Load

Break

Switch

Ratings

Uncrating

Exercise

care

uncrating

equipment

Check

all

packing

material

insure

that

small

parts

are

not

accidentally

thrown

away

not

remove

any

temporary

identification

tags

labels

until

the

installation

complete

APPLICATION

The

manually

operated

Type

LBS

Load

Break

Switch

corporates

the

functions

disconnecting

isolator

switch

and

circuit

load

interrupter

available

with

out

fuses

When

supplied

with

fuses

the

current

limiting

fuses

provide

high

interrupting

capacity

short

circuit

pro

tection

and

overload

protection

case

transformer

fuses

Storing

the

load

break

switch

not

erected

immediately

should

stored

clean

dry

location

Before

placing

storage

inspect

and

grease

steel

surfaces

gears

drive

screws

etc

prevent

rusting

Protect

mechanism

contacts

etc

from

dust

and

grit

with

suitable

covers

Space

heaters

should

used

prevent

damage

from

condensation

NOTE

Indoor

cubicles

are

neither

weatherproof

nor

dripproof

;

they

should

stored

indoors

indoor

units

must

stored

outdoors

adequate

covering

must

pro

vided

addition

heat

source

approximately

250

watts

output

should

placed

inside

each

inch

high

compartment

prevent

condensation

Fused

load

break

switch

applications

are

limited

the

rating

the

fuse

Since

the

maximum

continuous

current

rating

available

fuses

approximately

450

amperes

only

the

600

amp

load

break

switch

fused

Typical

applications

are

Incoming

line

isolator

and

interrupter

Bus

tie

Emergency

transfer

Transformer

feeder

Branch

feeder

Courtesy of NationalSwitchgear.com

INSTALLATION

DRAWINGS

500

MCM

per

phase

for

one

600

amp

load

break

switch

mounted

one

inch

high

cubicle

(

either

upper

lower

compartment

the

remaining

compartment

being

blank

)

500

MCM

per

phase

for

two

high

arrangements

cluding

one

load

break

switch

inch

compartment

and

either

motor

starter

transformer

second

load

break

switch

the

other

compartment

Should

any

these

particular

limitations

exceeded

cable

entry

compartment

will

required

Refer

outline

and

wiring

drawings

for

location

termi

nals

cable

sizes

and

connections

Before

making

cable

connections

consider

phase

rotation

When

the

switch

feeding

transformer

phasing

traced

from

the

transformer

throat

Refer

cable

manufacturer

’

recommendations

for

detailed

information

Outline

drawings

and

wiring

diagrams

are

furnished

advance

the

customer

The

drawings

and

wiring

dia

grams

furnished

will

include

any

changes

originated

the

customer

during

manufacture

and

any

changes

correc

tions

the

supplier

necessary

insure

proper

installa

tion

and

operation

the

equipment

When

erecting

and

connecting

this

equipment

use

only

the

latest

certified

drawings

and

wiring

diagrams

supplied

Preliminary

drawings

may

changed

and

should

not

used

MECHANICAL

Foundation

The

load

break

switch

cubicles

can

mounted

con

crete

pad

any

type

floor

The

use

floor

sills

grouting

wrork

not

necessary

however

they

must

mounted

perfectly

level

and

continuously

supported

chor

bolts

must

installed

Refer

the

outline

drawing

Secondary

Connections

Secondary

wiring

wrhen

required

carefully

installed

and

tested

the

factory

special

customer

connections

are

required

such

spaceheater

connections

internal

power

source

wire

terminal

blocks

are

provided

shown

the

wiring

diagram

Erection

The

load

break

switch

cubicle

must

mounted

level

position

Install

shims

required

When

only

single

unit

being

installed

should

securely

anchored

when

properly

set

place

When

multi

ple

units

are

being

installed

align

the

front

each

unit

with

the

first

and

bolt

the

units

together

before

securely

anchoring

the

cubicle

not

properly

mounted

difficulty

may

encountered

with

door

swing

FINAL

INSPECTION

AND

TESTING

Before

the

equipment

placed

service

thorough

spection

and

test

must

made

Any

defects

that

are

found

should

corrected

immediately

The

Type

LBS

Load

Break

Switch

completely

adjusted

tested

and

inspected

the

factory

before

shipment

additional

adjustment

should

necessary

However

careful

inspection

should

made

certain

that

ship

ment

unloading

uncrating

storage

installation

have

not

resulted

damage

change

adjustment

ELECTRICAL

WARNING

Conduit

Incoming

and

outgoing

power

cables

(

and

control

any

)

may

enter

and

exit

the

load

break

switch

cubicles

the

top

bottom

any

combination

required

When

cable

entry

through

the

bottom

conduit

should

located

the

prescribed

area

shown

the

floor

plan

the

outline

drawing

When

cable

entry

through

the

top

conduit

should

located

the

prescribed

area

shown

the

top

view

the

outline

drawing

From

this

point

initial

operation

ensure

that

cir

cuits

are

not

energized

After

the

switch

installed

properly

position

and

sec

urely

anchored

proceed

follows

Remove

blocking

and

other

temporary

supports

Check

that

high

voltage

connections

are

properly

tightened

and

insulated

(

required

)

Check

incoming

and

outgoing

connections

for

proper

electrical

connections

shorts

and

undesired

grounds

Check

that

interphase

harriers

are

position

Check

that

interlocks

are

functioning

properly

Cable

Connections

The

cable

size

limitations

are

follows

500

MCM

per

phase

for

1200

amp

load

break

switch

Courtesy of NationalSwitchgear.com

fuses

arc

provided

see

that

they

are

properly

positioned

the

fuse

clips

with

the

target

facing

the

front

Also

check

for

correct

fuse

size

Inspect

complete

load

break

switch

assembly

for

loose

nuts

and

bolts

the

switch

check

for

proper

operation

and

lubrication

During

the

closing

operation

observe

that

the

main

moving

contacts

and

quick

break

blade

move

freely

and

are

line

with

the

mai

slat

ionary

contacts

and

arc

chute

respectively

Open

and

switch

ten

times

sure

that

switch

properly

aligned

(

does

not

bind

)

Megger

test

the

high

voltage

circuit

sure

that

all

connections

made

the

field

are

properly

insulated

Make

dielectric

test

possible

the

high

voltage

circuit

for

one

minute

voltage

equal

2000

volts

plus

times

the

rated

voltage

CAUTION

Disconnect

all

lightning

arrestors

surge

capacitors

potential

transformers

and

any

other

equipment

that

may

damaged

the

test

voltage

during

this

test

WARNING

Keep

face

and

hands

clear

quick

acting

blade

OPERATION

NOTE

initial

position

cannot

returned

that

position

until

the

opening

closing

stroke

has

been

completed

The

Type

LBS

Load

Break

Switch

operated

the

operator

shown

Fig

open

load

break

switch

proceed

follows

Once

the

operating

handle

moved

from

its

Remove

any

padlocks

unlock

any

key

interlocks

used

SEQUENCE

OPERATION

—

OPERATOR

Grasp

operating

handle

with

left

hand

The

operator

combination

chain

operator

and

spring

loaded

mechanism

shown

Fig

Grasp

knob

with

right

hand

switch

puli

knob

and

move

handle

straight

position

the

handle

moved

the

main

moving

contacts

start

move

and

crank

compresses

spring

operator

assembly

When

crank

over

center

spring

takes

over

and

closes

switch

independent

the

speed

the

handle

verse

motion

handle

open

switch

Pull

knob

and

move

operating

handle

through

complete

stroke

one

continuous

motion

KEY

INTERLOCK

POSITION

PADLOCK

HOLE

SEQUENCE

OPERATION

—

SWITCH

CON

TACTS

switch

closed

main

current

carrying

contacts

engage

prior

the

quick

break

blade

contacts

inside

arc

chute

This

reduces

the

possibility

damage

welding

the

quick

break

blades

switch

closed

rated

fault

currents

switch

closes

fully

the

quick

break

blade

passes

between

and

restrained

the

stationary

arcing

contacts

within

the

arc

chute

closing

completed

the

current

shunted

through

the

main

contacts

with

very

little

passing

through

the

quick

break

blade

Fig

shows

the

working

components

the

switch

See

Fig

switch

opened

main

moving

contact

opens

first

and

quick

break

blade

held

back

the

restraining

contacts

When

main

moving

contact

set

distance

from

the

main

stationary

contact

the

quick

break

blade

stopped

from

further

angular

movement

the

pivot

point

causing

snap

rapidly

out

through

the

arc

chute

The

resulting

arc

elongated

and

extinguished

within

the

arc

chute

Both

the

main

moving

contact

and

the

quick

break

blade

then

move

full

open

position

easily

visible

through

inspection

window

KNOB

KEY

INTERLOCK

POSITION

PADLOCK

HOLE

OPERATING

HANDLE

233143

Fig

—

Typical

Operator

Courtesy of NationalSwitchgear.com

Fig

—

Operator

Fig

—

Working

Components

the

Load

Break

Switch

Fig

—

Opening

Sequence

Load

Break

Switch

Courtesy of NationalSwitchgear.com

MAINTENANCE

WARNING

the

opening

operation

the

load

break

switch

(

Fig

)

the

quick

break

blades

(

)

should

remain

locked

with

stationary

arcing

contacts

(

)

position

until

stop

(

)

main

movable

contact

(

)

acts

quick

break

blade

spring

housing

(

)

Continued

opening

movement

the

main

movable

contacts

will

draw

the

quick

break

blades

(

)

through

their

stationary

arcing

contacts

(

)

com

plete

quick

opening

the

circuit

due

the

spring

(

)

action

the

quick

break

blades

(

)

The

main

movable

contacts

should

opened

approximately

one

inch

before

the

quick

break

blades

disengage

any

the

quick

break

blades

(

)

should

start

move

with

the

initial

movement

the

main

movable

contact

(

)

they

should

start

withdraw

from

the

stationary

contacts

(

)

before

stop

(

)

starts

act

spring

housing

(

)

this

means

that

the

quick

break

blades

(

)

have

not

penetrated

sufficiently

into

the

stationary

arcing

contacts

(

)

This

rectified

lengthening

connecting

rods

(

)

through

adjustment

eye

bolts

(

)

the

quick

break

blades

(

)

continue

withdraw

from

their

stationary

arcing

contacts

(

)

before

stop

(

)

has

acted

upon

spring

housing

(

)

then

check

for

missing

compression

spring

(

)

stationary

arcing

contacts

(

)

Quick

break

blades

must

make

and

break

approximately

the

same

time

Disconnect

switch

from

all

external

power

sources

before

performing

any

inspection

maintenance

eration

PERIODIC

INSPECTION

Thorough

inspection

periodic

intervals

important

satisfactory

operation

Conditions

affecting

maintenance

are

weather

and

atmosphere

experience

operating

per

sonnel

and

special

operation

requirements

The

frequency

inspection

and

maintenance

will

therefore

depend

installation

conditions

and

can

determined

only

perience

and

practice

recommended

however

that

the

following

inspections

performed

least

once

year

after

100

operations

600

amp

switch

operations

1200

amp

switch

frequent

inspection

may

necessary

local

conditions

require

Inspect

interior

for

dust

and

dirt

accumulation

Remove

dust

from

all

parts

Inspect

bus

bars

and

cable

connections

see

that

they

are

proper

condition

they

show

signs

having

overheated

check

for

poor

loose

connections

loose

connections

for

overloads

Check

condition

main

contacts

quick

break

blades

and

arc

chute

Replace

any

worn

damaged

parts

Check

arc

chutes

for

loose

bolts

and

retighten

needed

Check

fastening

switch

shaft

assembly

Apply

grease

parts

requiring

lubrication

Apply

high

temperature

lubricant

(

silicon

molyb

denum

based

)

contact

component

surfaces

subject

abrasion

Hydrocarbon

based

grease

may

applied

very

sparingly

bearings

linkages

sprockets

and

drive

chains

not

directly

associated

with

current

carry

ing

components

Examine

and

test

all

safety

interlocks

This

equipment

designed

give

top

performance

when

installed

normal

indoor

locations

(

and

normal

outdoor

locations

when

specified

)

When

abnormal

conditions

—

such

corrosive

atmospheres

—

are

encountered

special

precautions

must

taken

minimize

these

effects

The

quick

break

blade

should

centered

the

slot

the

arc

chute

and

have

movement

the

bottom

the

stationary

contact

hlade

not

centered

then

loosen

the

two

screws

(

)

holding

jaw

contact

and

arc

chute

assembly

(

)

insulator

(

)

switch

slowly

while

lining

arc

chute

(

)

with

quick

break

blade

(

)

When

correct

alignment

has

been

achieved

tighten

the

two

screws

(

)

The

entry

and

travel

quick

break

blade

into

and

through

arc

chute

should

occur

freely

Hinge

contact

and

stationary

contact

must

line

Main

moving

contact

must

make

contact

all

four

surfaces

the

stationary

contact

check

contact

pressure

main

switch

contact

hinge

contact

(

)

slack

off

nut

(

)

until

drag

sufficient

harely

permit

turning

the

clamping

bolt

hand

then

tighten

nut

(

)

one

turn

(

Must

not

exceed

one

turn

)

check

pressure

jaw

contact

slack

off

nut

(

)

until

drag

sufficient

barely

permit

turning

the

clamping

bolt

hand

then

tighten

nut

(

)

one

turn

(

Must

not

exceed

one

turn

)

Main

movable

contact

must

make

contact

nch

minimum

the

contact

surface

the

main

stationary

contacts

SWITCH

OPERATION

AND

ADJUSTMENT

The

checking

and

adjustment

contact

operation

must

undertaken

with

the

over

center

spring

disengaged

and

the

incoming

power

energized

The

spring

action

disabled

removi

the

cotter

and

which

fastens

the

spri

and

clevis

the

crank

(

Fig

)

WARNING

Keep

face

and

hand

clear

quick

hreak

blades

Courtesy of NationalSwitchgear.com

Fig

—

Switch

Operation

and

Adjustment

ready

for

use

supplied

with

each

order

for

touching

any

scratches

etc

made

during

installation

Inspect

the

surface

and

retouch

where

necessary

Paint

furnished

spray

one

pint

cans

Space

heaters

when

specified

are

controlled

thermos

tats

mounted

inside

the

cubicle

The

thermostats

are

fac

tory

set

cut

and

out

definite

temperature

When

humid

conditions

exist

sure

provide

power

these

heaters

well

advance

energizing

the

equipment

insure

that

the

insulation

dry

QUANTITY

PER

PART

NUMBER

DESCRIPTION

SWITCH

REPLACEMENT

PARTS

Stationary

Contact

(

upper

)

Stationary

Contact

(

lower

)

Arc

Chute

Assembly

Moving

Contact

Assembly

600

(

Includes

movable

arcing

Contact

)

Operating

Link

Contact

Lubricant

205

109

002

205

109

004

375

793

501

376

028

502

The

following

list

parts

represents

the

major

components

the

load

break

switch

subject

wear

The

number

operations

and

the

severity

interruption

are

the

factors

considered

when

determining

the

quantity

spare

parts

for

stocking

1200

Consult

Factory

105

931

501

171

370

002

TOUCH

PAINT

Matching

paint

one

pint

per

three

units

thinned

and

Courtesy of NationalSwitchgear.com

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