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Modular Distribution System
JPBD and LPBD Series
Protected Battery Disconnects
Modular Distribution System
Mounting Rail Detail
226
Four Position Rear Connect
227
Four Position Top Connect
228
Eight Position Rear Connect
229
Eight Position Top Connect
2230
Decision Tables
231
JPBD and LPBD Series
Protected Battery Disconnects
224
JPBD Series PBD
233
JPBD Wall & Frame Mounts
235
JPBD Bus Bar Specifications
236
JPBD Series Schematics
238
JPBD Series Decision Table
238
LPBD Series PBD
239
LPBD Wall & Frame Mounts
240
LPBD Series Schematics
242
LPBD Bus Bar Specifications
242
LPBD Series Decision Table
243
Airpax provides circuit on demand
from a pre-wired power bus. The Modular
Distribution System utilizes “plug ’n play”
capabilities to simplify the design of your power
bus system.
The module design simplifies line/load interface,
saving both money and valuable time by eliminating
the need for shutdown when expanding the equipment.
Additionally, this flexible interface allows for adjacent
circuits to be fused or protected, while parallel alarm
conductors simplify signal wiring. By specifying the number
of protected circuits, the Modular Distribution System can be
designed to meet your application requirements.
Airpax, known for our high quality products and outstanding
customer service, once again sets the standard in innovative and
precision technology with our new Modular Distribution System.
Modular Distribution System
225
Modular
Distribution
System
„ Modular design provides
unprecedented flexibility
„ Hot Plug modules allow for
equipment expansion without
power shutdown
„ Unique alarm conductors
simplify signal wiring
„ Module load terminals available
with top or rear access
Modular Distribution System
SCALE: 1/2
Mounting Rail Detail
.787
REF.
.445 ±.015
2X R.225 ±.030
1.250 ±.010
.625
Ø .250 ±.015
.107 ±.018
SCALE: FULL
Mounting rails are available in 36 inch lengths.
Airpax Part Number 647-230-5250. Consult factory for ordering information.
226
Modular Distribution System
Four Position Rear Connect
2.710
.921
INSIDE
INSULATOR
SURFACE
INSULATOR
8 X .625
Modular Distribution System
2.897
2.672
3.336
1.234
2 X .835
RAIL MOUNT SCREWS
(2 SCREWS TO SECURE
INSULATOR, REMAINING SCREWS
SUPPLIED IN HARDWARE KIT)
1.028
.046
3.251
LEAD WIRE 18 GAGE
(BLACK - COMMON,
WHITE - NC, RED - NO)
4 X .640
8 X 1/4 X 20 UNC SCREW
3 X .787
4 X .625
1.574
2 X 3/8 X 16
UNC SCREW
3.989
Modular Distribution System
227
Four Position Top Connect
INSIDE
INSULATOR
SURFACE
1.079
2 X .482
8 X .625
INSULATOR
Modular Distribution System
1.592
2.210
2.897
1.683
3.336
1.234
2 X .835
RAIL MOUNTING SCREWS
(2 SCREWS TO SECURE INSULATOR,
REMAINING SCREWS SUPPLIED IN
HARDWARE KIT)
1.028
.046
3.251
4 X .640
LEAD WIRE 18 GAGE
(BLACK - COMMON,
WHITE - NC, RED - NO)
3 X .787
4 X .625
8 X 1/4 X 20 UNC SCREW
1.574
3.989
228
Modular Distribution System
2 X 3/8 X 16
UNC SCREW
Eight Position Rear Connect
2.710
.921
INSIDE
INSULATOR
SURFACE
INSULATOR
16 X .625
Modular Distribution System
2.897
2.672
3.336
1.234
4 X .835
1.028
RAIL MOUNTING SCREWS
(2 SCREWS TO SECURE INSULATOR,
REMAINING SCREWS SUPPLIED IN
HARDWARE KIT)
.046
3.251
LEAD WIRE 18 GAGE
(BLACK - COMMON,
WHITE - NC, RED - NO)
8 X .640
7 X .787
16 X 1/4 X 20
UNC SCREW
8 X .625
1.574
1.574
4 X 3/8 X 16
UNC SCREW
1.574
7.137
Modular Distribution System
229
Eight Position Top Connect
INSIDE
INSULATOR
SURFACE
1.079
4 X .482
16 X .625
INSULATOR
Modular Distribution System
1.592
2.210
1.683
2.897
3.336
1.234
4 X .835
RAIL MOUNTING SCREWS
(2 SCREWS TO SECURE INSULATOR,
REMAINING SCREWS SUPPLIED IN
HARDWARE KIT)
1.028
.046
3.251
LEAD WIRE 18 GAGE
(BLACK - COMMON,
WHITE - NC, RED - NO)
7 X .787
8 X .640
27,41
27,41
27,41
12,24
12,24 12,24
12,24
12,24
8 X .625
16 X 1/4 X 20 UNC SCREW
1.574
1.574
1.574
7.137
230
Modular Distribution System
4 X 3/8 X 16
UNC SCREW
Modular Distribution System Decision Table
1
2
First Decision
Second Decision
Number of Positions*
Modular Distribution System Code
-4
4 position
-8
8 position
-12
12 position
-16
16 position
-20
20 position
*Consult factory for additional options.
3
4
Third Decision
Thread Type
-B
Standard
Consult factory for metric thread information.
Example:
Fourth Decision
Load Terminal Access
-T
Top
-R
Rear
270 - 8 - B - R - T
1
2 3 4 5
5
Fifth Decision
Plating*
-S
Silver
-T
Tin
Modular Distribution System
*Consult factory for additional options.
Notes:
1 This specification covers Airpax four and eight position Modular
Distribution Systems for LEL, LML, IEL, IML type circuit protec
tors using 5/16 inch diameter bullet terminals.
2 High-Low Temperature Operation: The Modular Distribution
System shall operate in a range from -40°C to +85°C.
3 Dielectric Strength: The Modular Distribution System shall
withstand DC voltage for 60 seconds between all electrically
isolated parts as follows:
Between line and load bus bars: Minimum 2000 VDC
Between line and load bus bars and aux. switch contact strips:
Minimum 2000 VDC
Between line and load bus bars and clamp up rods:
Minimum 2000 VDC
4 Insulation Resistance: Shall not be less than 100 megohms at
500 volts DC.
5 Flammability: All Modular Distribution System parts have
an U.L. 94 V-O flammability rating.
6 Electrical Ratings:
Current Ratings:
Maximum load bus rating per position is 100 amps.
Maximum common bus rating of the eight position Modular
Distribution system is 600 amps.
Maximum common bus rating of the four position Modular
Distribution System is 300 amps.
Voltage Rating: 125 VDC max.
7 Recommended Torque Specifications:
Load bus 1/4 - 20 UNC 72 inch pounds
Line bus 3/8 - 16 UNC 192 inch pounds
Mounting channel #10 x 0.750 long 20 inch pounds
8 Auxiliary Switch Wire Rating:
200° C; 600 volts; UL recognized (UL 1199)
9 Ampacity:
Line bus @ 600 amps: 850 amps/sq inch
Line bus @ 300 amps: 850 amps/sq inch
Load bus @ 100 amps: 1140 amps/sq inch
10 Plating: Common and load bus bars are available with either
silver or tin plating.
Silver Plating: The plating of the louvertec bands of the Airpax
circuit protectors used in the Modular distribution System are
silver plated. Silver plated bus bars on the Airpax Modular
Distribution System product significantly reduce the possibility of
galvanic corrosion.
Tin Plating: The use of tin plated bus bars with the silver plated
louvertec bands on the circuit protector increases the possibility
of galvanic corrosion at the joint interface.
The use of a conductive polymer such as Stabilant 22 or CAIG
100 is recommended with both silver plated and tin plated bus
bars in order to negate galvanic corrosion and to improve the
conductivity of the joint interface.
11 Beryllium Copper Contact Strip: Beryllium copper strips are
used to conduct current to and from the terminals of the circuit
protector auxiliary switch. The beryllium copper strips have a
minimum compression set and will return to their original size
with as much as a 30% deflection. Repeated insertion and
removal of the circuit protector in this application will have an
insignificant effect on the contact force between the auxiliary
switch terminals and the beryllium copper strips.
Modular Distribution System
231
JPBD and LPBD Series
Protected Battery Disconnects
Telecommunication networks are highly
reliable, with interruptions being predominately
uncommon. To further reduce the unlikely event
of an interruption, battery systems provide the critical
backup power to keep these networks online. These
battery backup systems also present a potential hazard to
firefighters, emergency and maintenance personnel, making
the need to provide a remote or manual disconnect function more
critical.
Two versions of the Airpax Protected Battery Disconnect
provide highly effective and versatile solutions to address the issues
associated with battery system applications. The JPBD and the LPBD
series of Airpax Protected Battery Disconnects feature engineering and
design innovations optimizing safety and operational requirements for a wide
range of applications.
Protected Battery Disconnect
233
JPBD Series Protected Battery Breaker Disconnects
„ Disconnect and
overcurrent protection
Disconnecting batteries in the event of an emergency or for
maintenance has just become much easier with Airpax Protected
Battery Disconnects (PBD). A key component of the Airpax
„ Manual and remote
disconnect capability
disconnect product is the JTEP/JTMP circuit breaker packaged
„ Completely front accessible
in a completely front accessible enclosure. The JTEP/JTMP
„ 24 -160VDC operation
is UL489A Listed for use in communications equipment.
„ Wall, rack or battery
stand mounting
In addition to overcurrent protection and switching capability,
„ LED indication of power n,
off and/or tripped condition
applying a voltage signal to the optional remote trip circuit allows
„ Standard ratings of 200, 600,
800, 1000 and 1200 amps
batteries to be disconnected from a remote location. Optional alarm
and meter shunt functions can also be provided, eliminating the
„ Optional alarm circuit
need to design these functions in separately.
„ Optional meter shunt
JPBD and LPBD Series
Ratings
Current Rating
Voltage
Interrupt Capacity
200 - 1200 amps
65 VDC
50,000 amps
200 - 800 amps
160 VDC
10,000 amps
Application
Manually or remotely disconnect
batteries in communications networks.
Voltage
While primarily used in +24 and
-48VDC circuits, Airpax disconnects
will operate at any voltage up to
65VDC. (For higher voltages please
consult the factory.)
Terminations
Standard bus plates are configured for
two hole telecom lugs. Consult factory
for various bus plate configurations.
Mounting
Airpax disconnects can be wall mounted or mounted on a battery stand. A
rack mount version is also available.
234
Protected Battery Disconnect
Operating Ambient
-40° to +60°C.
Optional Alarm
An optional alarm circuit indicates
power on, power off and/or tripped
condition. The alarm feature can easily
be accessed via a small terminal block
at the top of the unit.
Optional LED Indication
Optional LEDs on the front of the unit
can visually indicate power on, power
off, and/or tripped condition.
Optional Remote Trip Capability
Airpax battery disconnects can be
activated from a remote location
allowing a safe means of disconnecting batteries in the event of a fire or
other types of emergencies. A terminal
block at the top of the unit provides
convenient termination points.
It is recommended that a two amp
switch be used to activate the remote
trip feature.
Listed under
ULFileE220375
UL
®
Optional Meter Shunt
An optional 25mv at rated current,
non-isolated meter shunt is available.
Limited to current ratings of 800
amps max.
Wall & Frame Mount
200 - 800 Amp
6.120
[155.45]
2.920
[74.17]
DIMENSION INDICATES
CLEARANCE FOR CABLE ENTRY
DIMENSION INDICATES
CLEARANCE FOR CABLE ENTRY
WITHOUT CABLE MANAGEMENT
3.125
[79.38]
4.000
[101.60]
WITH CABLE MANAGEMENT
6.250
[158.75]
6.500
[165.10]
LED INDICATION
LEFT OR RIGHT
FRAME MOUNT
OPTIONAL
.710
[18.03]
4X Ø .275
4.125
[104.77]
17.000
[431.80]
20.000
[508.00]
8.062
[204.77]
6.100
[154.94]
22.500
[571.50]
23.500
[596.90]
.981
[24.92]
1.750
[44.45]
600 Amp PBD
3.000
[76.20]
Note: Cover omitted from
orthographic views for clarity.
6.120
[155.45]
Wall Mount
1000 - 1200 Amp
2.920
[74.17]
DIMENSION INDICATES
CLEARANCE FOR CABLE ENTRY
DIMENSION INDICATES
CLEARANCE FOR CABLE ENTRY
LED INDICATION
9.500
[241.30]
6.250
[158.75]
3.000
[76.20]
17.000
[431.80]
JPBD and LPBD Series
WITH CABLE MANAGEMENT
WITHOUT CABLE MANAGEMENT
7.000
[177.80]
20.000
[508.00]
23.500
[596.90]
22.500
[571.50]
Note: Cover omitted from
orthographic views for clarity.
600 Amp PBD
Note: All dimensions shown in inches.
Tolerance is ± .015 unless noted.
Protected Battery Disconnect
235
JPBD and LPBD Series
Rating
Number
of Poles
Dim. “A”
800-1200 amps
6
10.5 [266.70]
100-600 amps
3
5.255 [133.48]
1.200
[30.48]
4.912
[124.77]
1 200
HANDLE GUARD
OPTIONAL
Note: All dimensions shown in inches.
Tolerance is ± .015 unless noted.
DIM “A”
(SEE TABLE)
236
Protected Battery Disconnect
400, 600, 800, 1000 and 1200 Amp Bus Bar Specifications
5.360
3.250
.500
1.750
1.750
1.750
3.250
1.750
3.250
4.500
Ø.531
TYP.
800 AMP
400 AMP
Max. Lug
Number
1200 amps
800 MCM
4 max.
1000 amps
800 MCM
3 max.
800 amps
777 MCM
3 max.
600 amps
777 MCM
2 max.
400 amps
777 MCM
2 max.
Figure 3
Figure 1
3.860
Notes:
1. This specification covers Airpax battery disconnect
bus bars from 400 amps to 1200 amps. Two through
six pole construction.
6.860
Ø.531
TYP
1.750
2.060
2.060
2. Finish: .001” copper undercoat followed by a .00005” - .0001
tin plating with brighteners added. Reference ASTM B - 54592 regarding tin plating and solderability requirements.
1.750
1.750
3.250
Max. Lug
Size
4.500
Ø.531
TYP.
.500
Amperage
.500
1.750
3.250
4.500
4.500
3. Min./Max. Torque Requirement: 1/2 - 13 UNC…
460 - 555 inch pounds.
4. Special bus plate hardware available. Consult factory.
Ø.531
TYP.
1.500
600 AMP
1000 AMP
Figure 2
Figure 4
8.360
1.090
2.060
TYP
Ø.531
TYP
Note: All dimensions shown in inches.
Tolerance is ± .015 unless noted.
.500
1.750
3.250
JPBD and LPBD Series
4.500
1200 AMP
Figure 5
600 Amp Bus Bar for Top/Bottom Cable Connection
4.500
4.110
1.032
1.000
2.078
1.000
2.078
3.750
3.750
5.000
1.750
Ø.531
TYP
1.750
5.000
Ø.531
TYP
8.360
Protected Battery Disconnect
237
JPBD Series Schematics
LED R OR LED G
C
LED R
LED R
L
E
D
L
E
D
C
SERIES TRIP
NO INDICATION
FIG. 1
FIG. 2
C
C
NO
NO
NC
NO
NO
ALM1
ALM1
ALM2
ALM1
RED
RED OR GREEN
FIG. 9
NC
NC
LED INDICATES BREAKER ON
(NO ELECTRICAL ALARM)
(6th DEC. OPT. 2 OR 6)
NO
NC
NC
LED
LED INDICATES OFF AND
ISOLATED ALARM CIRCUIT
(6th DEC. OPT. 1)
NC
NC
COMBINATION LED AND ALARM
CIRCUIT INDICATES BREAKER OFF
(6th DEC. OPT. 1)
LED INDICATES ON AND
ISOLATED ALARM CIRCUIT
(6tH DEC. OPT. 2 OR 6)
FIG. 11
FIG. 10
NO
NC
NC
LED
VT1
C
C
RED OR
GREEN
NO
LED
LED
LED INDICATES BREAKER OFF
(NO ELECTRICAL ALARM)
(6th DEC. OPT. 1)
VT2
L
E
D
C
RED
NO
TERMINAL BLOCK
ALM2
L
E
D
C
NO
FIG. 8
TERMINAL BLOCK
ALM2
C
NC
ISOLATED ALARM CIRCUIT
INDICATES BREAKER OFF
FIG. 7
TERMINAL BLOCK
ALM2
C
C
C
SERIES TRIP WITH REMOTE DISCONNECT
LED INDICATES BREAKER ON OR OFF
(6TH DEC. OPT. 3)
FIG. 6
ALM1
NO
NC
SERIES TRIP WITH REMOTE DISCONNECT
LED INDICATES BREAKER ON
(6th DEC. OPT. 2 OR 6)
TERMINAL BLOCK
ALM1
L
E
D
NO
FIG. 5
ALM2
C
NC
C
NC
FIG. 4
TERMINAL BLOCK
ALM2
LED R
L
E
D
L
E
D
NO
SERIES TRIP LED
INDICATES ON/OFF STATE
(6th DEC. OPT. 3)
TERMINAL BLOCK
NO
VT2 VT1 LED G
NC
FIG. 3
ALM1
VT1
C
L
E
D
NO
SERIES TRIP LED
INDICATES BREAKER ON
(6th DEC. OPT. 1)
SERIES TRIP LED
INDICATES BREAKER OFF
(6th DEC. OPT. 2 OR 6)
VT2
L
E
D
C
NC
NC
TERMINAL BLOCK
TERMINAL BLOCK
LED R LED G
NO
NO
SWITCH ONLY
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL BLOCK
COMBINATION LED AND ALARM
CIRCUIT INDICATES BREAKER ON
(6th DEC. OPT. 2 OR 6)
FIG. 13
FIG. 12
LED
RED
LED INDICATES OFF, ISOLATED ALARM
CIRCUIT & REMOTE DISCONNECT
(6th DEC. OPT. 1)
FIG. 14
FIG. 15
TERMINAL BLOCK
ALM2
ALM1
VT2
TERMINAL BLOCK
TERMINAL BLOCK
VT1
MS2
MS1
C1
MS2
LED R
LED R
NO
NO
NC
NO
NC
L
E
D
Type
JTEPBD
Series Trip
JTMPBD
Mid-Trip
LED INDICATES BREAKER ON,
REMOTE DISCONNECT,
METER SHUNT
FIG. 19
FIG. 20
4
Second Decision
VT2
VT1
LED G
LED R
L
E
D
L
E
D
NO
Fourth Decision
NC
SERIES TRIP WITH REMOTE DISCONNECT, LED
INDICATES BREAKER OFF RED, ON GREEN
(6th DEC. OPT. 3)
6
Notes:
1. All configurations are
available with remote
disconnect.
2. All schematics shown
with circuit breaker in
off position.
FIG. 21
System Voltage
Aux. Switch
First Decision
LED R
L
E
D
NC
LED INDICATES BREAKER OFF,
REMOTE DISCONNECT,
METER SHUNT
FIG. 18
2
VT1
NO
NO
COMBINATION LED &
ALARM CIRCUIT INDICATES
ON. METER SHUNT
FIG. 17
JPBD Series
Decision Table
VT2
C
NC
FIG. 16
JPBD and LPBD Series
NO
NC
COMBINATION LED &
ALARM CIRCUIT INDICATES
OFF. METER SHUNT
LED INDICATES ON, ISOLATED ALARM
CIRCUIT & REMOTE DISCONNECT
(6th DEC. OPT. 1 OR 6)
MS1
C
NC
RED
Sixth Decision
LED Indication
0
Switch only
1
24 Volts DC
0
No indication
1
Series Trip
2
48 Volts DC
1
Red indicating disconnected only (off)
2
REC4 - electrical/mechanical alarm
3
72 Volts DC
2
Green indicating connected only (on)
3
1RLS4 - electrical trip alarm only
4
160 Volts DC
3
Red (off), green (on) indication
6
Red indicating (on)
Dual aux. switches available (consult factory).
Example:
JTEPBD - 0 - D - 1- W - 1 - A - 2 - M
8
Eighth Decision (Optional)
Remote Disconnect Voltage
1
3
Third Decision
Current Rating
5
Poles
2 3 4 5 6 7 8 9
Fifth Decision
200 amps
1
W
Wall mount
C
250 amps
1
WT
Wall mount top load only
D
400 amps
2
WB
Wall mount bottom load only
E
600 amps
3
FR*
Frame mount (right)
F
800 amps
4
FL*
Frame mount (left)
R1
19 inch rack mount
R2
23 inch rack mount
H
J
1000 amps
1200 amps
350 amps
5
6
2
Refer to Airpax specification AM-374 for detailed circuit
breaker information.
Protected Battery Disconnect
7
*100-800 amp only
Seventh Decision
Bus Bar Code
Mounting
B
G
238
MS2
LED R
C
LED
1
VT1
C
C
C
VT2
MS1
L
E
D
L
E
D
C
MS2
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL BLOCK
C1
MS1
A
Thru hole connection
B
Threaded connection
0
No remote
1
24 VDC
2
48VDC
3
120VAC
4
240 VAC
9
Refer to Bus Bar Specifications on page 235.
Ninth Decision (Optional)
Options
M
Metering shunt (800 amp max.)
G
Handle guard (rack mount only)
C
Cable management (both ends)
T
Cable management (top only)
B
Cable management (bottom only)
One or more options may be specified as required.
LPBD Series
Protected Battery
Breaker Disconnects
LPBD with Standard
Bellcore Lock
Disconnecting batteries in the event of
an emergency or for maintenance has just
become much easier with the Airpax LPBD
battery disconnect. Maximum ratings of
200 amps @ +24 or -48VDC make the LPBD
ideal for outside plant, cell site,
central office and co-location applications.
The LPBD is available in wall mount,
rack mount, custom and NEMA enclosure
configurations in package sizes that require
minimal space. In addition to the disconnect
function the LPBD also provides
over current protection and provides a
fault interrupt rating of 50,000 amps.
The LPBD can be supplied with an
optional remote disconnect feature
allowing batteries to be disconnected
LPBD for through cabinet
wall installation
with an emergency shut down switch at
the service entrance of a site or from a
remote monitoring center. This key feature
helps address increasingly stringent
requirements of local Fire Marshall’s
and pending NEC requirements.
In addition to remote disconnect
capability the LPBD can also be configured
JPBD and LPBD Series
to remotely reconnect battery circuits.
„ Disconnect and overcurrent protection
„ Manual and remote disconnect and
reconnect capability
„ Completely front accessible
„ +24 and -48VDC operation
„ Wall, rack or battery stand mounting
„ Optional NEMA enclosure
„ LED indication of power
on, off and/or tripped condition
„ Standard ratings of 50, 100,
125, 150 and 200 amps
„ Optional alarm circuit
„ Standard Bellcore Lock
LPBD Inside Wall,
Surface & Frame Mount
Protected Battery Disconnect
239
Ratings
Current Rating
Voltage
Interrupt
Capacity
50 - 100 amps
80 VDC max.
50,000 amps
125 - 200 amps
65 VDC max.
50,000 amps
Application
Manually or remotely disconnect batteries in
communications networks. Remote reconnect.
Consult factory.
Voltage
While primarily used in +24 and -48VDC circuits,
Airpax disconnects will operate at any voltage
up to 80VDC.
LPBD Outside Wall,
Surface Mount
1.000
[25.40]
Terminations
Consult factory for various bus plate options.
Bus plates are configured for two hole telecom
type lugs.
6.128
[155.64]
Mounting
Airpax disconnects can be wall mounted or mounted on a battery stand. A rack mount version is also
available. Consult factory for additional information.
TAMPER
RESISTANT
LOCK
1.000
[25.40]
SECTION A-A
Operating Ambient
-40 to +60°C.
6.375
[161.92]
JPBD and LPBD Series
Optional Alarm
An optional alarm circuit indicates power on,
power off or tripped condition. The alarm feature
can easily be accessed via a small terminal block
within the unit.
.900
[22.86]
A
7.375
[187.33]
Optional LED Indication
Optional LEDs on the front of the unit can
visually indicate power on, power off, and/or
tripped condition.
A
Optional Remote Trip Capability
Airpax battery disconnects can be activated
from a remote location allowing a safe means
of disconnecting batteries in the event of
a fire or other types of emergencies.
A terminal block is provided for
convenient termination.
Remote Reset Capability
Battery circuits can be reconnected remotely
by applying a voltage signal to the optional
remote actuator. A terminal block is provided
for convenient termination.
2.364
[60.05]
1.614
[41.00]
Ø 2.060
(2" NPT)
Notes:
1. Enclosure designed to NEMA type 3
. “Rain Tight” specification.
2. “Connection Kit” hardware included.
240
Protected Battery Disconnect
2.600
[66.04]
1.000
[25.40]
2.890
[73.41]
4.750
[120.65]
LED INDICATION
8X 3/8-16 UNC-2B
14.000
[355.60]
LPBD Inside Wall, Surface
& Frame Mount
1.000
[25.40]
1.375
[34.92]
JPBD and LPBD Series
4.435
[112.65]
3X Ø .300
.180
[4.57]
13.000
[330.20]
8.625
[219.08]
12.000
[304.80]
4X .312
[7.92]
1.425
[36.19]
4X .687
[17.45]
2.850
[72.39]
Protected Battery Disconnect
241
LPBD Series Schematics
C
C
NO
NO
SERIES TRIP
LED INDICATES
BREAKER OFF
NC
SERIES TRIP
NO INDICATION
SWITCH ONLY
SERIES TRIP
LED INDICATES
BREAKER ON
NC
LED
LED
TERMINAL BLOCK
TERMINAL BLOCK
C
C
NO
NO
SERIES TRIP
LED INDICATES
ON/OFF STATE
SERIES TRIP WITH
REMOTE DISCONNECT
LED INDICATES
BREAKER ON
NC
NC
LED
LED
Notes:
1. All configurations are available
with remote disconnect.
2. All schematics shown with circuit
breaker in off position.
LED
TERMINAL BLOCK
TERMINAL BLOCK
LPBD Series Specifications
Recommended Lugs for LPBD (indoor)
1.375
Wire Size
Part No.
MFG
250 MCM
256-30695-1245P
Thomas & Betts
250 MCM
CL-250-2-3/8
Southport Ind.
250 MCM
CLL-25-20-3/8
Southport Ind.
250 MCM
GL250N-38
Nsi Industries
250 MCM
BLU-025D3
Penn Union
250 MCM
YA29L-2TC38
Burndy
JPBD and LPBD Series
3/8-16 UNC-2B
1.000
Bus Bar Details
.500 MINIMUM
CLEARANCE BETWEEN
LUG AND HOUSING
(BOTH ENDS)
Recommended Lugs for LPBD (outdoor)
Notes:
1. Bus Bar Finish: Tin over
copper undercoat
2. Torque value for bus bar
connections: 225-270 inch pounds.
242
Protected Battery Disconnect
Wire Size
Part No.
MFG
#4
256-30695-1159PH
Thomas & Betts
#4
256-30695-1161PH
Thomas & Betts
1/0
256-30695-1162PH
Thomas & Betts
2/0
256-30695-116P
Thomas & Betts
3/0
54816BEPH
Thomas & Betts
4/0
256-30695-1117P
Thomas & Betts
LPBD Series Decision Table
1
2
First Decision
Second Decision
Aux. Switch
Type
LEPBD
Series Trip
0
Switch only
LMPBD
Mid-Trip
1
Series Trip
2
1REC4 - electrical/mechanical alarm
3
1RLS4 - electrical trip alarm only
Dual aux. switches available (consult factory).
3
A
LEPBD - 1 - C - 2 - A - 3 - 2 - L
1
2 3 4 5 6 7 8
50 amps
Fourth Decision
System Voltage
Poles
1
1
24 VDC
48 VDC
B
75 amps
1
2
C
100 amps
1
3
80 VDC
D
125 amps
2
4
12 VDC
E
150 amps
2
F
175 amps (UL 489A)
2
H
175 amps
3
J
200 amps
3
K
250 amps
3
Refer to AM-374 STD 5000 AIC 80 VDC
5
Fifth Decision
6
Enclosure Type
Sixth Decision
LED Indications
A
Inside wall, surface and frame mount
0
No indication
C
19" rack mount
1
Red indicating disconnected only (off)
2
Green indicating connected only (on)
3
Red (off) / Green (on) indication
5
Red indicating on
JPBD and LPBD Series
Example:
4
Third Decision
Current Rating
Consult factory for other combinations.
7
Seventh Decision
8
0
No remote trip
1
24 VDC
2
48 VDC
3
120 VAC
4
240 VAC
Eighth Decision
Options
Remote Disconnect Voltage
L
Handle lock*
*See Airpax specification AM-371
Remote turn on ROCB available (50-100 amps).
Consult factory.
Available up to 150 amps.
Protected Battery Disconnect
243
Power Protection Products Glossary
Ambient Temperature: Temperature of medium, such as air,
water or earth, into which heat of device is dissipated.
Ampacity: Current-carrying capacity of electrical
conductor or device.
Arcing Time: (As used for fuses) is measured from point when
element melt time ends to point when current is
interrupted and permanently becomes zero. If mechanical indicator is used which incorporates secondary element
parallel to fusible equipment, arcing time will commence from
point at which indicator melt time ends. Circuit protector arcing
time is measured from the moment of contact separation to
the point when the current permanently drops to zero.
Automatic: Self-acting, operating by own mechanism
when actuated by some impersonal influence, such as change
in current strength, pressure, temperature or mechanical
configuration.
Branch Circuit: Portion of wiring system extending beyond
final over-current device protecting circuit.
Busbars: Current-carrying conductors in power distribution
equipment, such as unit substations, busways, etc. Usually
solid copper and rectangular shaped rather than round.
Cascade Circuit: Circuit in which more than one protector
is connected in series between power source and load.
(See Coordination.)
Circuit Breaker: Device used to open and close circuit by nonautomatic means, as well as to open circuit automatically on predetermined overload current without injury to itself (when properly applied within its rating.)
Glossary
Circuit Breaker, Non-trip-free: Breaker designed so that
circuit can be held closed by restraining handle when carrying
overload current that would normally trip breaker to open position (Not normally recommended.)
Circuit Breaker Trip-free: Breaker whose pole(s) cannot
be maintained closed when carrying over-load currents that
would automatically trip breaker to open position. None
of the circuit breaker poles would reclose while operating
mechanism is maintained in closed position.
Common Trip: Multi-pole circuit breaker in which overload on
any pole will cause all poles to open simultaneously.
Conductor: Material that has attached to its atoms many “free”
electrons which may be detached easily by electrical pressure
or voltage. Silver, copper and aluminum are good conductors.
Thus any material or wire that is used to carry electric current.
244
Power Protection Products Glossary
Coordination: Ability of protector with lowest rating
(in cascade arrangement) to open before protectors with higher
rating when fault occurs downstream from lowest rated protector. (See Cascade Circuit.)
Current Limitation: Ability of protective device to reduce
short-circuit peak current to value less than that which
would be available if no protective device was in circuit.
Current Rating (Continuous): Maximum direct current
or alternating current in amperes at rated frequency which protective device will carry continuously under defined
conditions without exceeding specified performance limits.
Current-responsive Element (Fusible Elements):
Part of fuse or limiter which carries current and melts
when current exceeds predetermine value.
Disconnect: Device through which conductors of circuit
can be disconnected from their source.
Duty Continuous: Requirement of service that demands operation at substantially constant load for an indefinitely long time.
Duty Intermittent: Requirement of service that demands operation for alternate intervals of (1) load and no load;
or (2) load and rest; or (3) load, no load and rest.
Effective Voltage (or Current): Effective value of sinusoidal
voltage or current is 0.707 times peak value. Also designated
RMS value (Root Mean Square). When AC voltage is referred
to effective value is understood unless otherwise noted.
Symbols E and I without subscripts indicate effective values.
Element Melt Time: Time elapsed from moment fusing
current begins to flow until moment current sharply drops
in value and arcing commences.
Fault: Abnormal flow of current through defect in normal circuit
configuration. Commonly referred to as short circuit.
Fault Current: (See Short-circuit Current.)
Feeder: Circuit conductors between service entrance
equipment and branch circuit overcurrent device.
Fuse: Device which protects circuit by melting of its current
responsive element when overcurrent passes through it.
Fuse Dual Element: Time-delay fuse combines thermally controlled element which functions in case of overload and fusible
element which operates under short circuit.
Fuse Normal Opening (Fast-acting): Opens circuit without
deliberate time-delay.
Fuse Time-delay: Fuse that has its total clearing time
deliberately delayed in overload current range.
Fuse Very Fast-acting: Fuse that opens circuit without
deliberate time delay and whose short-circuit opening time
is faster than normal opening fuse.
Instantaneous Trip (Opening): “Instantaneous” indicates
delay is not introduced purposely into action of device.
Insulator (or Dielectric): Material that is very poor conductor
of electricity. Mica, glass, porcelain, rubber, paper, plastic, oils
and varnishes are considered good insulators.
Interrupting Capacity: Maximum short-circuit current at rated
voltage which protective device is required to interrupt under
operating duty specified and with normal frequency recovery
voltage not less than rated voltage.
(See Rupture Capacity.)
Recovery Voltage: Voltage impressed across protective
device after circuit has been interrupted and after high
frequency transients have subsided.
Rupture Capacity: Applied to reusable protective devices.
(See Interrupting Capacity.)
Selective System: System in which protective device closest
to faulted circuit opens and isolates that circuit without
disturbing remainder of system. (See Coordination.)
Short-circuit Current (Fault Current):
Maximum current that system can produce at point of
application of protective device.
Time-delay: Qualifying term indicating that there is
introduced purposely delayed action.
Time-inverse: Time-current relationship where protective
device opening time decreases as current increases.
Inverse-time: (See Time-inverse.)
Let-through Current: Current that actually passes through
protective device after initiation of fault.
Minimum Fusing Current: Smallest value of current that
will melt current responsive element at specified ambient temperature.
Total Clearing Time: Time measured from beginning of
specified overcurrent condition until permanent interruption of
circuit. Total clearing time for fuse of limiter is equal to sum of
melting item and arcing time.
Ultimate Trip Current: Minimum current which will
provide a reliable trip on the breaker (typically 115 percent
of rated current.)
Voltage Drop: Fall of voltage along conductor due to
its resistance.
Overcurrent: Any current exceeding rated current of
protective device (exceeding maximum ultimate trip
current for circuit breakers.) This includes both overload
and short-circuit currents.
Voltage Drop (Distribution System): Difference at any
instant between voltages at source and utilization ends of feeder, branch circuit or transformer.
Overload Current: Overcurrent in excess of current rating.
Overload range is considered to be greater than rated current
up to approximately ten times rated current.
Voltage Rating: Maximum alternating current and/or
direct current voltage at which protective device is designed
to operate.
Panelboard: Single group of assembled panels which include
fuses. Assembled with or without switches and/or automatic
overcurrent protective devices for control of light, heat or power
circuits of small individual and aggregate capacity. Usually
placed in or against wall or partition and accessible only from
front.
Voltage Regulation: Measure of change in voltage between
no load and full load in terms of full load voltage.
Phase-to-phase: Voltage measured between any two
“corners” of delta connection or between any two “legs”
of wye connection.
Voltage Peak: Voltage or current of AC sinusoidal wave when
it reaches its peak or maximum level twice in cycle. These
peaks are only a point of each 1/2 cycle. Direct current voltage
is really peak voltage at all times.
Glossary
Kilowatthour (KWH): Electrical energy expended if 1
kilowatt is used for 1 hour.
Watt (W or P): Unit of electrical power which represents
amount of power of circuit when current in that circuit is 1
ampere and voLtage is 1 volt.
Protective Device: Devices which respond to harmful abnormal
conditions in electric distribution system and function to open
parts of circuit which will isolate cause of disturbances and so
permit remainder of system to function normally.
Power Protection Products Glossary
245