Compact Magnum Low Voltage Disconnects Series - 250A - Compact LVD - The Most Powerful LVD Available

Roll Over to Zoom
48514 48514 back 48514 48714


Littelfuse Compact Low Voltage Disconnects electronically sense battery voltage and conserves starting power. The unit automatically disconnects and reconnects loads based on battery conditions which prolongs battery life by preventing damage due to excessive discharge.

When battery voltage falls below a programmed voltage settings for 2 minutes, non-critical loads are automatically disconnected.

Disconnect Voltage 12V: 12.05V min, 12.1V typical, 12.15V max. When voltage drops below 12.1V, system activates the alarm for one minute and then disconnects loads.
Disconnect Voltage 24V: 24.1V min, 24.2V typical, 24.3V max. When voltage drops below 24.2V, system activates the alarm for one minute and then disconnects loads.
Overcurrent Protection: 260A - System will disconnect load and sound alarm after 3 seconds of excessive current.
Key-Off Timer: 15 minutes typical - Optional feature, after key-off unit will wait a set time before activating alarm. One minute later, loads are shut off.

Features & Benefits

  • The most powerful solid-state LVD available! 
  • Auto-ranging identifies whether system is 12V or 24V, and automatically establishes thresholds (one part number; two voltages)
  • Metric tin-plated copper terminals
  • Eliminates dead battery service calls and lost time. Extends battery life by preventing irreversible damage due to excessive discharge. 
  • Unit gives warning one minute before disconnect through a 250 mA alarm signal that can drive audible or visual systems
  • Optional manual override feature.
  • Electronics are sealed to IP67, see Wiring Instructions IF-173 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).
Note: Harness is sold separately

Ordering Information

Part Number Description
48514 Factory Programmed Unit - See datasheet for specifications - OBSOLETE AS OF 05-24-2018 
48714 Programmable Unit - OBSOLETE AS OF 05-24-2018 

Access specifications, certifications, check availability and order parts below

Catalog #DescriptionCompare
Obsolete: 2018 -05-24
LVD Unit Only
Obsolete: 2018 -05-24
Programmable LVD Unit Only
To request product environmental information, please complete the Product Environmental Information Request Form.