Siemens Sentron LMD6 Series Owner's manual

SIEMENS
I-=r-E
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Molded Case
Circuit Breakers
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LMD Frame
Information and
Instruction Guide

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General Information
General
LMD-Frame Sentron Series Circuit Breakers are used in
individual enclosures, switchboards and panelboards. They
are available as thermal magnetic
with interchangeable trip
units (Type
LMD6 and HLMD6), thermal magnetic with non-
interchangeable trip units (Type LMXD6 and HLMXD6), instan-
taneous magnetic only (motor circuit protectors, Type LMXD6-
ETI) and molded case switches (Type LMXD6).
Pressure
wire connectors, suitable for use with aluminum or
copper
wire are available for all LMD-Frame circuit breakers.
Rear connection stud assemblies are also available for both 2
and 3 pole constructions. This assembly
permits cable or bus
connections
to be terminated behind the circuit breaker rather
than to terminal connectors
mounted on the breaker terminal
pads. UL listed field addable accessories such as shunt trips,
undervoltage devices, auxiliary switches and bell alarm
switches are also available. The installation of all accessories
should be done only by qualified personnel. Information con-
cerning
all accessories can be found on pages 17-20 and 35.
Thermal Magnetic
LMD6, LMXD6CD HLMD6 and HLMXD6CD type circuit breakers
provide
complete overload and short circuit protection by use
of a time delay thermal trip element and an instantaneous
magnetic trip device. Nominal instantaneous trip values are
externally adjustable with the 8 trip points as shown below.
Instantaneous Adjustment Trip Range
Nominal Instantaneous Values
Ampere :1:25% :1:20%
Ratings Tolerance 2 3 4 5 6 7 Tolerance
low
High
500-600 3000 3430
3860
4290 4710 5140 5570 6000
700-800 3200
3500 3700 4200 4700 6400 7300
8000
Circuit Breakers are calibrated at the factory, under controlled
temperature conditions for applications at 40°C (104°F) ambi-
ent
to meet requirements as outlined In UL 489 (Molded Case
Circuit Breakers and Circuit Breaker Enclosures) Standard. The
cover on
the trip unit is sealed to prevent access to the trip
elements. Alterations of the calibration of these elements
should not be attempted. Removal of the special sealed line
cover voids any warranties related to this product as well as
voiding of the UL listing. Product catalog number information
can be located on pages 34 thru 36.
Molded Case Switch
A molded case switch is available in the LMXD6 type circuit
breaker. This device employs the same operating mechanism
as the thermal magnetic and magnetic only circuit breakers.
A preset instantaneous function
is factory installed to allow
the switch to trip and protect itself at a high fault level. This
level is approximately 8000 amperes. No overload or low fault
CDTypes LMXD6 and HLMXD6 are UL listed for reverse connection applications
current protection is provided. This switch must be protected
by a fuse or a molded case circuit breaker
of equal ampere
rating.
When protected by a fuse or circuit breaker, the switch
is suitable for use on a circuit capable of delivering not more
than:
65,000A RMS Symmetrical @ 240 Volts AC
50,000A RMS Symmetrical @ 480 Volts
AC
25,000A RMS Symmetrical @ 600 Volts AC
Interrupting Ratings -Symmetrical RMS
Amperes (kA) Based on UL 489 Standards
The interrupting ratings of the LMD-Frame circuit breakers
are based on circuits adjusted
to the short circuit (at specified
voltage) before insertion of the circuit breaker.
Also shown is IEC 947-2 interruption rating information.
Interrupting Ratings
Based on UL 489 Standards UL File #10848
RMS Symmetrical Amperes (kA)
UlA.I.R. IECA.I.R.
Breaker Volts
AC Volts DC Volts AC (50/60 Hz)
Type 220/240 380/415 500
240 480 600 250 500 (leu)
(lcs) (leu) (lcs) (leu) (lcs)
LMD6,
65 50 25 30
(2-P) 25 (3-P)
65 33 40 20 30 15
LMXD6
HLMD6,
100 65 50 30
(2-P) 50 (3-P)
100 50 65 33 42
21
HLMXD6
3

General Information
Instantaneous Trip
ETI motor circuit interrupter, type LMXD6 (adjustable instanta-
neous magnetic trip only) are designed for use
in welding cir-
cuits, motor circuits
and combination starters as a disconnect-
ing means and for short circuit protection. They should
be
used in conjunction with motor-running, over-current protec-
tion devices, and should permit the motor to start
without nui-
sance tripping from motor in-rush current. The circuit breaker
should have a continuous current rating established
in accor-
dance with requirements outlined within the NEe.
The instantaneous settings indicated
in the following table are
based
on information found in Article 430 of the NEe. Use of
this information does not infer conformance
with the NEe
and/or local coding authority.
Table established using 1100% of FLC. Maximum setting
should
be no greater than 1300% for non-E motor design and
no greater than 1700% for E motor design. (This table for AC
motors only)
Base on NEC Requirements
Settings No Greater Than 1300% of
FlC
FLC
Cat. No. ADJ. Amps
215-238 LOW 2800
238-261 2 3100
261-284 3 3400
284-308 LMXD62L800 4 3700
308-369 LMXD63L800 5 4000
369-423 6 4800
423-462 7 5500
462-490 HIGH 6000
246-269 LOW 3200
269-284 2 3500
284-323 3 3700
323-362 LMXD62A800 4 4200
362-492 LMXD63A800 5 4700
492-562 6 6400
562-616 7 7300
616-660 HIGH 8000
Use of this table should always be done in accordance to the
NEC requirements to allow for short circuit protection as well
as the ability to overcome motor current in-rush during the
starting period.
4
Circuit Breaker Operation
With the mechanism latched and the contacts open, the oper-
ating handle will be
in the OFF position. Moving the handle to
the
ON position closes the contacts and establishes a circuit
through the breaker. Under overload or short circuit conditions
sufficient to automatically trip or open the breaker, the operat-
ing handle moves to a position between
ON and OFF. To
relatch the circuit breaker after automatic operation, move the
operating handle to the extreme
OFF position. The circuit
breaker
is now ready for reclosing.
The overcenter toggle mechanism
is trip free of the operating
handle. The circuit breaker, therefore, cannot
be held closed
by means of the handle should a tripping condition exist. After
automatic operation, the handle assumes
an intermediate
position between
ON and OFF, displaying a clear indication of
tripping.
Maintenance
Experience has shown that properly applied molded case cir-
cuit breakers normally do not require maintenance. However,
some industrial users may choose to establish
an inspection
and maintenance procedure to be carried out on a regular
basis. For detailed information, consult applicable NEMA
publications or your local Siemens sales office.
SPECIAL NOTE:
LMXD6, HLMXD6 circuit breakers are not UL listed as
interchangeable trips-DO NOT REMOVE TRIP UNIT and
replace
with another. Removal of trip unit voids UL
listing.
LMXD6, HLMXD6 type circuit breakers are UL listed for
reverse connection applications.
Operating Forces (In Lbs.)
Operating Action Pounds
OFF to ON
22
ON to OFF
36
TRIPPED to RESET
48

-
LMD-Frame Outline Dimension Drawings
Types LMD6, LMXD6, HLMD6, HLMXD6, LMXD6-ETI, HLMXD6-ETI
Removable +---~I
Shield
Push- 16.00
To-Trip
Button
9.75
I
I
I
3.13
, P p I
<9 I 0
U
'
5.10
~-+--~-+-----4--~~
J 1.24
.85
2.50 2.50
Removable
Terminal
Cover
.281 Dia. Mounting Holes
.531 Dia. x 1.55 Deep
Counterbore 4 Holes
Magnetic
-Trip
Adjustment
Removable
Terminal
Cover
7.44
.47
f:
4'50~
-1.312 A
.09 .68 -I
I'r-~~~~
1.4:4 1.62
A
+--+-<t Handle
Front View
.953-
I
End View
NOTE: 2 and 3 pole breakers are the same physical size.
Current carrying parts are
omitted from the center pole
for 2 pole configurations.
.
297
l
.390 Dia. Hole
Section AA (Side View)
Section
BB (Side View)
1.280
/- 3/8-16 UNC-28
3/8-16 UNC-28
5

Pressure Wire Connectors
A DANGER
Hazardous Voltage. i t I 088v--3/4-16 UNF-28
1.750 ~
11.281 DO
Will cause death or severe injury.
:I: :I: .437
I
Turn power off supplying switchboard
or panel before installing.
A Safety Instructions
I
I
,1.
937 1
IOol~9
O~
TA3K500 Terminal Connector
General
Each connector kit contains a solderless connector and associ-
ated hardware for making one line or load connection.
Installation
NOTE: Trip unit must be installed in circuit breaker prior
to mounting load end connector.
A. Tighten mounting screws to securely attach connector.
See table for torque values.
B. Tighten set screws securely to prevent overheating of
conductor and connector. See table for torque values.
TA2N750 Terminal Connector
Connector Circuit Breaker Connector
Set Screw
Catalog Numbers
Ampere Rating Wire Range Torque
~~ , 500-600
(1-2) #1 AWG-500 375 in-Ibs.
,",~
kcmil (Cu/Al)
<~'\,"
TA2K500
~lJ
500-800
(1-3) #1 AWG-500 375 in-Ibs.
~ .. ;.:·i""
kcmil (Cu/AI)
TA3K500
~.
-' .,.
500-800
(2) 600-750 kcmil 375 in-Ibs.
- ..
(Cu/AI)
TA2N750
8
1
,.875
D~E
For Use With
Type(s)
LMD6, LMXD6,
HLMD6, HLMXD6
LMD6, LMXD6,
HLMD6, HLMXD6
LMD6, LMXD6,
HLMD6, HLMXD6
t
f 4

-
LMD-Frame Time Current Curve
Types 800A LMD6, LMXD6, HLMD6, HLMXD6
10,000
9,000
8,000
7,000
6,000
3,000
2,000
1,000
900
800
o
100
90
80
"
60
10
9
8
-g 5
@ 4
<n
.::: 3
~
F 2
.1
09
08
01
009
.008
.007
TIME-CURRENT CHARACTERISTIC CURVE
H-E" SENTRONTM CIRCUIT BREAKER
LMD-Frame. Types LMD6. LMXD6,
HLMD6, HLMXD6. 2&3POLES
For and coordination purposes
Based on 40'C
cold start Connected with 4 feet of wire (75°C) per ter-
minal. Tested In open air with current In all
Curve shown IS for maximum interrupting If a
1\
breaker IS used the mstantaneous portion should
Maximum Single Pole Interrupting rating and the curve deleted to the right of that value
Trip Time at 25°C
<D
INSTANTANEOUS TRIP TABLE
500Sec. @ 300% Nominal Instantaneous Values
Ampere
±25% ±200/0
Ratings Tolerance 2 3 4 5 6 7 Tolerance
Low High
500-600 3000 3430 3860 4290 4710 5140 5570 6000
700-800 3200 3500 3700 4200 4700 6400 7300 8000
1\
INTERRUPTING RATINGS
\
RMS Symmetrical Amperes (kA)
ULA.I.R. IEC A.I.R.
\ Breaker
VoitsAC Volts DC Volts AC (50/60 Hz)
Type 220 240
380415
500
240 480 600 250 500
(leu
lies lieu (les) lieu) lies)
LMD6.
LMXD6 65 50 25 3012-PI
2513-PI
65 33 40 20 30 15
HLMD6.
HLMXD6 100 65 50 3012·PI
5013-PI 100 50 65 33 42
21
~~Ingl~ pole test data at 25CC For other Instantaneous
triP values
In table are nominal
Low
Instantaneous I
1-
High Instantaneous
Sening ® Setting ®
480 & 600V
~
Multiples of Circuit Breaker Continuous Current Rating 9

Shunt Trip and Undervoltage Trip
Electrical Check
Shunt Trip
A. Reset and turn circuit breaker ON.
B. Attach test circuit to accessory leads. When the test volt-
age reaches 55 percent or more of the rated coil voltage,
the circuit breaker should trip.
C. With breaker TRIPPED or OFF, check to make sure coil cir-
cuit
has opened.
Limit Switch Closed
When Breaker
is Closed
,--
I~
1
Shunt
Trip
Customer
Supply
Electrical Data For Shunt Trip
Coil Inrush Current
At Rated Voltage
Voltage (Amperes)
60 Cycles AC
24 1.2
48 0.8
120 0.395
208 0.265
240 0.165
277 0.190
480 0.145
600 0.080
DC
12
4.6
24
2.2
48 1.2
125 0.5
250 0.35
- - I
Catalog
Number
S17JLD6
S18JLD6
S01JLD6
S02JLD6
S03JLD6
S15JLD6
S04JLD6
S06JLD6
S16JLD6
S07JLD6
S09JLD6
S11JLD6
S13JLD6
Undervoltage Trip
A. With breaker in TRIPPED position, connect test circuit to
accessory leads. Energize undervoltage trip device at
85
percent of the marked rated voltage of the coil. Reset and
turn breaker handle ON.
B. Reduce voltage to 35 percent of rated coil voltage. Circuit
breaker must trip.
,--
I
Undervoltage
Trip
Customer
Supply
- - I
I
Electrical Data For Undervoltage (UV) TripCV
Catalog
Coil Sealed-In Current Number
Voltage At Rated Voltage 1
UVTrip
(Amperes) Plus
1 Aux. Sw.
60 Cycles
AC
120
.03
U01JLD62A
208 .018 U02JLD62A
240 .016 U03JLD62A
277 .013 U16JLD64A
480 .008 U06JLD64A
600CD@
.008 N/A
DC
24 .11
U13JLD62A
48 .06 U14JLD62A
125 .027 UlOJLD62A
250CD@
.02 U12JLD62A
1 UV Trip
Only
U01JLD6
U02JLD6
U03JLD6
U16JLD6
U06JLD6
U08JLD6
U13JLD6
U14JLD6
U10JLD6
U12JLD6
(1) ReSistor to be mounted externally of circuit breaker and connected by
installer.
cv All auxiliary switch ratings are the same as auxiliary sWitch kit A01 FD64.
C)) Kit includes a 30k ohm, 25 watt resistor (Clarostat Cat. No. VP-25-K or
equivalentl.
@Kit includes a 2.5k ohm,
25 watt resistor (Clarostat Cat. No. VP-25-K or
equlvalentl.
19

Auxiliary Switch and Bell Alarm Switch
Electrical Check
Auxiliary Switch Kits
Ampere Rating of Switch
Catalog Number of
Switches Volts AC Volts
DC
Number
A01JLD64 1
A02JLD64 2
A
120 240
10 10
10 10
Auxiliary
Switch
c
480 125
10 05
10 0.5
B
Switch Identification (All With Three leads)
Wire Wire Switch Terminals or Contacts
Markings Color
Cor C1
White C - Common terminal
250
0.25
0.25
A or A1 Black NO -Contact open when breaker is open, closed
when breaker is closed.
6 or
61 Red NC -Contact closed when breaker is open,
open
when breaker is closed.
Accessory units that employ a combination will have the same wiring colors or
identifiers. A double auxiliary switch combination will use wiring markings A-A
~,
6-61 and C-C1
Auxiliary Switch G)
A Use a buzzer or light indicator attached to switch leads A
and
C. With breaker in ON position, a light or buzzing noise
should
be observed.
B. Move handle to OFF position. Indicator light or buzzer
should turn off.
C. Attach test to leads Band C. Light or buzzer should
turn on.
D. Repeat Steps A through C using leads A 1, B1 and C1.
E. Move handle to ON position. Indicator light or buzzer
should turn off.
(j) Should the indicator not function properly during "check" procedure, check
for incorrect Installation or wiring.
20
Bell Alarm Switch Kits
Number of Ampere Rating of Switch
Catalog Auxiliary Volts
AC
Volts DC
Number Switches 120 240 480 125 250
601JLD64 0
10
10 10
.5 .25
A01JLD646 1
10 10 10
.5 .25
A02JLD646 2
10 10 10
.5 .25
Bell
Alarm
Switch
~-i~
A c B
Bell Alarm Identification (All With Three leads)
Wire Wire Switch Terminals or Contacts
Markings Color
C
White
C - Common terminal
A Yellow NC -Normally closed contact
(Closed when circuit breaker is tripped.1
B Brown NO -Normally open contact
(Open when circuit breaker is tripped.1
Bell Alarm Switch G)
A Use a buzzer or light indicator attached to switch leads A
and C. With breaker in ON position, trip breaker by
depressing red trip button. Indicator light or buzzer should
operate.
B. Reset breaker to OFF. Indicator light or buzzer should
turn off.
C. Move breaker handle to ON. Indicator light or buzzer
should remain off.
f
(

Siemens Energy & Automation, Inc. For Nearest Sales Office
Power Distribution & Controls Division 1-800-964-4114 or 800-241-4453
3333 Old Milton Parkway www.sea.siemens.com/ For Product Information
Alpharetta, GA 30005 sales/salesoffices.html www.sea.siemens.com/power/