Product Datasheet
COMPACT LOW VOLTAGE DISCONNECT
100A • 12 or 24V DC • IP67 • OBSOLETE 2018
Specifications Overview
Voltage:
12/24V DC (Auto Ranging)
Operating Voltage:
12V DC: 9V Min, 12V Typical, 16V Max
24V DC: 18V Min, 24V Typical, 32V Max
Disconnect & Connect Voltage:
Overcurrent Protection:
Ingress Protection:
See table on page 2
135A
IP67
Description
Unit disconnects non-critical loads when battery voltage falls
below threshold, reconnects when battery is recharged.
Operating Temperature:
Dimensions:
-40° to +85°C (-40° to +185°F)
4.27 x 4.50 x 3.11 (108.6 x 114.3 x 79.0)
Web Resources
Download technical resources at:
littelfuse.com/48513
Unit is auto-ranging: identifies whether system is 12V or 24V,
and automatically establishes thresholds. One part number;
two voltages.
Eliminates dead battery service calls and lost time by
extending battery life and preventing irreversible damage
due to excessive discharge.
Ordering Information
PART NUMBER
DESCRIPTION
No action is required by vehicle operator to protect the
batteries – unit automatically disconnects and reconnects,
giving operator a warning one minute before disconnect.
200mA alarm signal can drive audible or visual systems or any
large device via a relay. Optional manual override feature.
48513
Unit Only
48513-01-BX
48513-02-BX
48513-03-BX
48713
Unit with Harness (p/n 12804)
Unit with Harness (p/n 12804)
& Rocker Switch (p/n 58326-06)
Unit with Harness (p/n 12804)
& Toggle Switch (p/n 55088)
Electronics are sealed to IP67, see Installation Instructions
IF-162 for mounting and wiring details. Solid state reliability
and resistance to vibration – replaces vulnerable conventional
solenoids. Unit exceeds one million cycles and is protected
from overcurrent, overvoltage, and under-voltage. Minimal
draw on battery (only 1mA standby).
Programmable Unit Only
Associated Items
PART NUMBER
12804
DESCRIPTION
Plug & Harness
Rocker Switch
Toggle Switch
Protects vulnerable onboard electronics such as GPS, phone,
computer. Solid-state switching creates less electrical noise
and interference, and eliminates spikes.
58326-06
55088
Features and Benefits
• Electronically senses battery level and conserves
starting power
• Prolongs battery life by preventing battery damage.
• Unit works with 12V or 24V DC systems
12804
58326-06
55088
Datasheet Replaces Hotfeed Number D-619
1 of 2
littelfuse.com
© 2019 Littelfuse Commercial Vehicle Products
Rev: 020419