Commercial Vehicle Product Datasheet FlexMod SMART BATTERY ISOLATOR CONTROLLER Specifications Overview Voltage Rating: 12-24V DC (Auto Ranging) Humidity: 0 to 90%RH Vibration: 10-500Hz Operating Temp: -40 to +85C Ingress Protection: IP67 Dimensions: 4.0 x 2.70 x 1.31 Web Resources Description Download technical resources at: Preserves starting battery voltage by isolating the auxiliary littelfuse.com/FlexMod battery when system voltage drops. For vehicles with two batteries (or banks of batteries). Turns any electromechanical Ordering Information solenoid or relay into a Smart Isolator. PART NUMBERS HARNESS Features and Benefits DESCRIPTION INCLUDED BULK BOXED Isolates main and auxiliary batteries when system voltage drops below 12.7V, and automatically reconnects battery 48540 48540-BX Unit Only No banks at 13.2V. Preserves starting power eliminates 48540-01-BX Unit & Harness Yes downtime and jump starts due to dead batteries. Start assist feature provides boost to starting battery, 48740 Dealer-programmable unit No when needed. 48740-01-BX Dealer-programmable unit w/ Harness Yes Compatible with modern electronically controlled alternators (some diode Battery Isolators are not). Smart Battery Isolator Controller eliminates false battery warnings created by diode isolators. Accessories Status light output drives remote light, informing operator PART NUMBERS DESCRIPTION when banks are connected. 12805 FlexMod Harness Auto-ranging to automatically sense the voltage of the system (12 or 24V) and selects the presets appropriate to that voltage. FlexMod Dimensions Waterproof, dustproof and vibration-proof. Sealed to IP67 so it can mount on a vehicle even in places where road- splash is a problem. Ultra low 1mA standby current means minimal battery drain especially valuable when vehicle is in storage or not in use. Factory programmable unit is highly versatile: with a broad range of presets available to match any special application. Rated for more than 1,000,000 on-off cycles unit operates for the lifetime of the vehicle. Solid state technology gives long life and low maintenance. Compact design (4 x 3 x 1) Uses less space mounts outside or inside. Saves money by eliminating other hardware, and provides better wire routing. Datasheet Replaces Hotfeed Number D-632 1 of 4 littelfuse.com 2017 Littelfuse Commercial Vehicle Products Rev: 053117Commercial Vehicle Product Datasheet FlexMod SMART BATTERY ISOLATOR CONTROLLER Electrical Characteristics CHARACTERISTIC MIN TYPICAL MAX NOTES Operating voltage (12V) 9V 12V 32V Operating voltage is the system voltage 12.7 When voltage drops below 12.7V (25.4V), for 1 minute, Disconnect voltage (12V 24V) 25.4 the isolator disconnects the solenoid/relay. 13.2 When either of the battery banks rises above 13.2V (26.4V) Connect voltage (12V 24V) 26.4 for 2 minutes, the isolator connects the solenoid/relay. Quiescent Current 1mA 2mA Circuit operating current Load Current 10A at 85C Overcurrent Protection 15A System will disconnect after 1 second of excessive current Status light load 200mA High side LED circuit Environmental Specifications CHARACTERISTIC PARAMETER NOTES -40 to +85C Operating Temperature Range 10A at 85C -40 to +185F Ingress Protection 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 Installation Configuration Visit Littelfuse.com for the most up-to-date product information. Littelfuse products are designed for specific applications and should not be used for any purpose (including, without limitation, automotive applications) not expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse product documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse product documentation. 2 of 4 littelfuse.com 2017 Littelfuse Commercial Vehicle Products Rev: 053117