Votronic 3078 Battery Protector 100 12V 24V 100A Battery Monitor

The VOTRONIC Battery Protector 100 is connected between the supply battery and the consumer and is suitable for all types (acid, gel, AGM) and brands of lead-acid batteries. It protects the battery from dangerous deep discharge and protects consumers and equipment from under- and overvoltage. Controlled by an external switch, it can also serve as a remote-controlled battery main switch.

Compared to the "normal" Battery Protector 40, the Motor version switches to undervoltage at 11.8V.

The device automatically resets to normal operation as soon as the voltage has risen to 12.5 V, for example, due to battery recovery or a short charging period. The shutdown can also be manually overridden using the "EMERGENCY ON" function. The Battery Protector 100 can be remotely controlled via the "Sensor +" terminal with a simple switch (1-pole ON/OFF). This turns it into a powerful main battery switch. The EMERGENCY ON function can also be remotely controlled.

Important product features

• High switching current 100 A, can be overloaded to 180 A for short periods; switchable to 12V/24V vehicle electrical system
• Intelligent automatic switching threshold always calculates the correct "empty" switch-off point for reliable battery protection with optimal capacity utilization, both for high-power consumers (low switching threshold with shorter response time) and very small loads (e.g., "hidden" power consumers with response times over days/months with high response thresholds)
• Optional operation also with 3 fixed switch-off thresholds (manually adjustable)
• The higher settings maintain the starting capability of emergency vehicles with only one battery circuit (according to DIN EN 1789)
• Pre-alarm with visual (LED) and acoustic (beeper, can be switched off) display and separate warning switch output (PNP, positive output 0.2 A) enables the user to take timely countermeasures (e.g., switch off unnecessary consumers)
• Solid battery screw connections for M6 cable lugs, protective caps included in delivery

Technical data

• MPN 3078
• Operating voltage: 12V/24
• Switching current (continuous/short): 100 A/180 A
• Switching threshold for undervoltage in 12V mode: 10.6V / 11.5V / 11.8V
• Switching threshold for undervoltage in 24V mode: 21.2V / 23V / 23.6V
• Reset point for undervoltage in 12V mode: 12.4V / 12.5V / 12.8V
• Reset point for undervoltage in 24V mode: 24.8V / 25V / 25.6V
• Overvoltage protection (off/on): 15.5V / 15V
• Weight: 180 grams