FlexMod Battery Isolator Controller Series - FlexMod Smart Battery Isolator Controller

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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those 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 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 documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The FlexMod Smart Battery Isolator Controller unit monitors two battery banks and controls one or more relays or contactors to make sure starting power is protected by isolating the starting and auxiliary battery banks. Turns any electromecanical solenoid or relay into a battery isolator and works with ECM controlled alternators. System will disconnect load after 1 sec of excessive current, and auto-recover after 10 seconds.

Programmable unit can be setup with custom parameters by select authorized distributors.

Features & Benefits

  • Compact design (4” x 3” x 1”) unit is waterproof, dustproof and vibration-proof.  Mounts anywhere on a vehicle, even places where road-splash is a problem. Sealed to IP67 standard. 
  • Isolates main and auxiliary batteries when system voltage drops below 12.7 Vdc, and automatically reconnects battery banks at 13.2 Vdc. Preserves starting power; eliminates downtime and jump starts due to dead batteries.
  • Start assist feature provides boost to starting battery, when needed.
  • Compatible with modern electronically controlled alternators (some diode Battery Isolators are not). Smart Battery Isolator Controller eliminates false battery warnings created by diode isolators.
  • Status light output drives remote light, informing operator when banks are connected
  • Unit is autoranging - senses 12V or 24V systems.
Mounting: Four 9/32" (7.2mm) dia. holes
Size: 4.0 x 2.7 x 1.3" (102 x 69 x 33mm)

Access specifications, certifications, check availability and order parts below

Catalog #Current Rating (Continuous) in AmpsVoltage Rating MaxDetailsIngress ProtectionHousingAgency Approval - HumidityAgency Approval - ShockAgency Approval - VibrationCompare
485401032IP67Blue Thermoplastic0 to 90% RHSAE J145510-500 Hz
48540-0110 A0 to 90% RH
48540-01-BX1032IP670 to 90% RHSAE J145510-500 Hz
4874010IP67Blue Thermoplastic0 to 90% RHSAE J145510-500 Hz
48740-0110 A0 to 90% RH

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To request product environmental information, please complete the Product Environmental Information Request Form.