Blue Sea 7615 DC Timer with Low Voltage Disconnect Battery Guard


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The 7615 is an automatic switch designed for 12V vehicle electrical systems. Rated at 120 amps continuous, it includes Low Voltage Disconnect and Overvoltage protection. A set of dip switches allows user selection of both timer and LVD values.

Can be configured to be used as one of the following battery saving products:

Timer Disconnect

  • User Selectable settings: 15 min, 30 min, 1 hour, 1.5 Hours, 2 hours, 4 hours
  • 12V signal triggers relay to connect battery power to devices
  • When signal is removed the timer is activated and will disconnect devices after a preset time
  • Timer ranges from 15 minutes to 4 hours

Low Voltage Disconnect

  • User Selectable settings: 11.0V, 11.5V, 12.0V or Off
  • Senses low battery voltage and automatically disconnects devices
  • Low voltage setting can be used in conjunction with Timer Disconnect. Low voltage will disconnect devices prior to preset time to preserve battery power

Automatic Charging Relay

  • Automatically combines two batteries when charging, and isolates them when discharging
  • Single side sensing design only monitors the voltage of the start battery
  • Ideal for auxiliary batteries that are AGM or significantly larger than the start battery


  • 12V signal will connect or disconnect relay without any time delay


  • Low Voltage cut out: 10.0V or less
  • Over Voltage disconnect: 16.0V or more
  • Amps (continuous rating): 120 Amps
  • Amps (intermittent rating: 210 Amps (5 min or less)
  • Terminal Stud Size: 3/8" - 16
  • Amperage Operating Current: 175mA (combined)
  • Amperage Operating Current: 4mA (open)
  • Size: 3.9"L x 3.5"W x 2.0"H
  • Warranty: 5 Years

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