Environmental Specifications Characteristic Parameter Notes Operating temperature range -40° to +85°C -40° to +185°F 100A at 85°C, 125A at 60°C Ingress protection rating IP67 Per IEC 529 Humidity 0 to 90%RH Vibration 10-500Hz Per SAE J1455 Shock Per SAE J1455 Thermal shock Per SAE J1455 Inductive transient +/- 600V Per SAE J1455 Load dump +150V Per SAE J1455 (1/4"–20) 50 in -lbs (5.78Nm) Terminal Torque Specifications Battery terminals Electrical Characteristics Min Typical Max Notes Operating voltage (12V) 9V 12V 16V If used with 12V DC systems *Disconnect voltage (+12V) *Connect voltage (+12V) 12.05V 12.95V 12.1V 13.0V 12.15V 13.05V When voltage drops below 12.1V, system activities the alarm for one minute, then disconnects loads. Operating voltage (24V) 18V 24V 32V If used with 24V DC systems *Disconnect voltage (+24V) *Connect voltage (+24V) 24.1V 26.0V 24.2V 26.1V 24.3V 26.2V When voltage drops below 24.2V, system activities the alarm for one minute, then disconnects loads. 1mA 2mA Cicuit operating current Maximum rated current *Overcurrent protection *Key-off timer 135A System will disconnect load and sound alarm after 3 seconds of excessive current. 15 min Optional feature. After key-off, unit will wait a set time before activating alarm. One minute later, loads are shut off. * These characteristics are programmable in 48713 series LVDs. Dimensions Sealed 4 Pin Connector 4.50 [114.3] Ø0.28 [Ø7.1] 4.27 [108.6] 2 81 [53.3] SureStart Compact Low Voltage Disconnect TM No more dead batteries! Electronically senses battery level and conserves starting power Prolongs battery life by preventing battery damage Unit works with 12V or 24V DC systems Characteristic Quiescent current Information on New Products from Cole Hersee Associated Items 12804 plug & harness 58326-06 Rocker switch 58332-11 Rocker switch 55088 Toggle switch 4 [101.6] 3.11[79.0] Littelfuse Commercial Vehicle Products • 20 Old Colony Avenue, Boston, MA USA 02127-2467 210. 621.1845 • www.colehersee.com • www.littelfuse.com Features & Benefits Unit disconnects non-critical loads when battery voltage falls below threshold, reconnects when battery is recharged. Unit is auto-ranging: identifies whether system is 12V or 24V, and automatically establishes thresholds. One part number; two voltages. 100A at 85ºC, 125A at 60ºC. Part number Eliminates dead battery service calls and lost time. Extends battery life by preventing irreversible damage due to excessive discharge. 48513-01 LVD & harness 48513-02 LVD with harness and 58326-06 Rocker Switch No action is required by vehicle operator to protect the batteries – unit automatically disconnects and reconnects, giving operator a warning one minute before disconnect. 250mA alarm signal can drive audible or visual systems or any large device via a relay. Optional manual override feature. 48513 LVD Programmable LVD Can be mounted in harsh environments – sealed to IP67, with sealed Deutsch connector. Solid state reliability and resistance to vibration – replaces vulnerable conventional solenoids. Unit exceeds one million cycles and is protected from over-temperature, overcurrent, overvoltage, and under-voltage. Minimal draw on battery (only 1mA standby). Parameters to fit your application can be custom-programmed into 48713 LVDs by selected distributors. Contact Cole Hersee for a list of distributors. Protects vulnerable onboard electronics such as GPS, phone, computer. Solid-state switching creates less electrical noise and interference, and eliminates spikes. 48713-02 LVD with harness and 58326-06 Rocker Switch Littelfuse Commercial Vehicle Products 48713 LVD 48713-01 LVD & harness D-619 Rev 02 How a Low Voltage Disconnect works LVD simplifies your wiring Normal Operation Sequence The Compact LVD reduces costs by minimizing installation time and complexity, and by significantly reducing the number of components. The small, lightweight design improves your mounting options, and eliminates mounting trays. Reduced number of wires gives a significant boost in reliability. Solid state switching in the compact LVD protects expensive electronic equipment by protecting from damage due to noise, electromagnetic interference and overcurrent. 1 When the vehicle has been running, the alternator has charged the battery, and the LVD is connected. Alternator LVD 2 When the engine is turned off, the loads draw down the battery until the cutoff voltage is reached. Alternator Ignition LVD Ignition B+ Manual Switch Ground B+ Manual Switch Ground Optional Relay Critical Loads 3 Battery Non-Critical Loads Audible/Visual Alarm Alternator Optional Relay Critical Loads Ignition alternator output - orange wire Manual Switch - violet wire Audible/Visual Alarm - white wire When the cutoff voltage is reached, the LVD activates the alarm circuit for 1 minute. Alarm can be an audible or visual device, or if a relay is used, it can be almost any powered device. LVD 4 Battery 5 Battery Alternator LVD Ignition B+ Manual Switch Ground Audible/Visual Alarm Optional Relay Non-Critical Loads Critical Loads When the vehicle is restarted, the battery is recharged until the connect voltage is reached. Then the LVD automatically reconnects the non-critical loads. 6 Installation with LVD Non-Critical Loads B+ Manual Switch Ground Critical Loads Audible/Visual Alarm If the operator does not push the Manual Switch to the B+ position during the alarm time, the LVD will disconnect, shutting off non-critical loads. If the operator actuates the Manual Switch, the LVD goes into a 15 minute ‘alarm snooze’ and afterwards returns to auto-sensing mode. Ignition Optional Relay Typical Installation Battery Audible/Visual Alarm Non-Critical Loads If the Manual Switch is put to Ground, the LVD disconnects, and stays off until the Manual Switch is moved to the B+ position. Typical system uses a timer delay relay and a solenoid: No override capability. No operator warning. No overcurrent protection. Needs a separate solenoid. LVD Alternator Ignition LVD Utilizing a single battery. Ignition B+ Manual Switch Ground Optional Relay Critical Loads Battery Non-Critical Loads Connects directly into the harness via the sealed Deutsch connector. Eliminates splicing in locations that are typically susceptible to water and salt ingress. Has integral studs. No need for extra components. Typical Applications Emergency Vehicle Alternator Easy installation, fewer components. Road Service Truck Lightbar Light Board/ Sign Board/ Arrow Board B+ Manual Switch Ground Audible/Visual Alarm Optional Relay Critical Loads Battery Non-Critical Loads Audible/Visual Alarm LVD Computer Systems Radios Cordless Light Battery Charger LVD Back-up Alarm