BEP Marine Dual Operation VSS Switch HD Optic 12/24V 500A for Marine Battery Management

Dual Operation VSS Switch HD Optic - 12/24V - 500A

This Voltage Sensitive Switch (VSS) automatically senses connected battery bank voltage and provides optimal, efficient charging of the second bank. The VSS allows for independent battery banks to be combined or isolated based on the presence of a charging source (such as an engine alternator or battery charger), while also offering remotely activated, high current, emergency parallel connection.

Designed and constructed for longevity in the marine environment with tinned copper conductors, stainless steel nuts, and high temperature, fibre reinforced plastics. The units are ignition protected, provide On/Off switching operation, and may be recessed or surface mounted.

The remote emergency parallel function can be operated through a momentary button on the dash which will parallel the batteries for 10 minutes. Once this 10 minutes has passed, if the voltage is high enough, the voltage sensitive switch will stay engaged. If not, it will disengage.

Features:

• Dual battery sensing
• Manual override option
• Dual 12/24 volt operation (both banks must be same voltage)
• Low power consumption (<6mA)
• Lowered cut in voltage (13.3/26.6V) suits low output alternators and high temperature environments

Technical Specifications:

• Volts - 12/24V
• Rating - 500A
• Dimensions (L x W x H) - 4" x 4" x 4.3"

In the Box:

• Parallel Switch
• Instruction manual

*Sold as an Individual

WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

The BEP Marine Dual Operation VSS Switch HD Optic (Part Number: 720-MDVSO) is a high-performance voltage sensitive switch designed for reliable battery management in marine applications. Capable of operating on both 12V and 24V systems, this switch automatically detects the voltage of connected battery banks to optimize charging efficiency. Its dual sensing capability allows for independent monitoring and control of two battery banks, enabling seamless integration or isolation based on the presence of a charging source such as an alternator or battery charger. This feature ensures that your batteries are maintained properly without unnecessary draining or overcharging, extending their lifespan and ensuring consistent power availability.

Constructed with durable, marine-grade materials including tinned copper conductors, stainless steel nuts, and fiber-reinforced plastics, the VSS switch is built to withstand harsh marine environments. It is ignition protected, supporting safe operation in engine compartments, and offers versatile mounting options, including recessed or surface mounting for custom installations. The switch includes a remote emergency parallel feature that can be activated via a dash-mounted button, allowing batteries to be paralleled for up to 10 minutes in case of emergency. After this period, if the voltage remains high enough, the switch will stay engaged, ensuring continued power support when needed.

Operationally, the BEP VSS switch features low power consumption (<6mA), making it suitable for systems where efficiency is critical. Its lowered cut-in voltage (13.3V/26.6V) is optimized for low-output alternators and high-temperature environments common in marine settings. The device's robust rating of 500A ensures it can handle high current loads safely. The switch's compact dimensions facilitate easy installation in tight spaces, making it an ideal choice for boat owners seeking a reliable, durable, and efficient battery management solution. Included in the package are the switch itself and an instruction manual to assist with installation and operation, providing everything needed for a straightforward setup.

This product complies with safety standards and is designed to deliver long-lasting performance in demanding marine environments, ensuring your battery system remains balanced, reliable, and ready for use at all times.

Features:

• Dual battery sensing for accurate monitoring and control

• Manual override option for additional control

• Operates on both 12V and 24V systems (must be same voltage)

• Low power consumption less than 6mA

• Lowered cut-in voltage optimized for low-output alternators and high-temperature environments