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Installation Instructions
Smart Battery Isolators
Part Numbers: 48525 and 48530
Specifications Overview
Enviornmental:
Voltage Rating:
Continuous Current:
Inrush Current:
Quiescent Current:
Ingress Protection:
Vibration:
Accuracy:
Power Studs:
Wire Connections:
Mounting:
Dimensions:
Operating Temperature Range:
Web Resources
Download 2D print and technical resources at:
littelfuse.com/SmartBatteryIsolator
Operations
Assemble the Contactor Relay in the following sequence:
1.
The two batteries are electrically connected together
when either battery voltage is above 13.2V for 2 minutes
(e.g. during charging).
2.
The two batteries are isolated when both battery
voltages are below 12.7V for 1 minute.
3.
The BOOST function connects the two batteries to
provide more starting energy.
• To enable the BOOST function, connect the violet
wire to 12V DC via a momentary switch or through
the ignition switch.
4.
The STATUS indicator and the on-board LED are turned
on when the two batteries are connected together.
© 2020 Littelfuse Commercial Vehicle Products
littelfuse.com
SAE J1455 and J1113
9-16V DC
48525 – 85A
48530 – 200A
750A
8mA
IP65
10-500Hz
+/-100 mV
5/16" -24 copper studs
Active High, 250mA
Violet: BOOST
Black: GROUND
White: STATUS
5/16"x19/32" on 2 13/64" centers
7.9 x 15.1 on 56 mm centers
3.4" x 3.4" x 3.1"
-40 to +85 °C
Connections
1.
Disconnect the battery or switch it off with the master
disconnect switch before installation.
2.
Connect the 48530/48525 MAIN BAT + stud to the positive
terminal of the main battery (also called starting battery or
chassis battery). Use appropriate heavy gauge cable and
proper fusing.
3.
Connect the 48530/48525 AUXILIARY BAT+stud to the
positive terminal of the auxiliary battery (also called the
coach battery). Use appropriate heavy gauge cable and
proper fusing.
4.
Connect black "Ground" wire to ground.
5.
Optional circuit connections:
• Connect violet "Boost" wire to a normally open
momentary switch. Connect the other side of the
switch to +12V DC.
• Connect white "Status" wire to a 12V DC, 50mA max.
audio/visual alarm. Connect the other side of the alarm
+12V DC.
• Unused wires should be capped or otherwise insulated
from active circuitry.
6.
Reconnect the batteries.
Electrical Diagram
1 of 3
IF-161
Rev: 010320-F
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Resumen de contenidos para Littelfuse 48525
- Página 1 Disconnect the battery or switch it off with the master disconnect switch before installation. Connect the 48530/48525 MAIN BAT + stud to the positive terminal of the main battery (also called starting battery or chassis battery). Use appropriate heavy gauge cable and proper fusing.
- Página 2 Conecte el perno + de la batería auxiliar (AUXILIARY BAT+) Corriente continua: 48525 –85A de las partes 48530/48525 al terminal positivo de la batería 48530 –200A principal (también conocida como la batería de arranque o Corriente de entrada al batería del chasis).
- Página 3 48525 – 85 A Relier le plot + de batterie principale (MAIN BAT) 48530 – 200 A 48530/48525 à la borne positive de la batterie principale Courant d’appel : 750 A (aussi appelée batterie de démarrage). Utiliser un câble de calibre élevé...