BEP Marine Dual Operation VSS Switch Controller - 12V, 275A

Dual Operation VSS Switch Cont Motorized - 12V - 275A

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
• Low power consumption (<6mA)

Technical Specifications:

• Volts - 12V
• Rating - 275A
• Dimensions (L x W x H) - 2.7" x 2.7" x 4"

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 Voltage Sensitive Switch (VSS) Part Number 701-MDVS is engineered for reliable and efficient management of dual battery banks in marine applications. This 12-volt switch automatically detects battery voltage levels, enabling optimal charging and power distribution. Its intelligent design allows for independent or combined operation of battery banks, depending on the presence of a charging source such as an engine alternator or external charger. The switch also features a remotely activated high-current emergency parallel connection, providing a critical safety feature for marine systems that require quick battery access during emergencies. Crafted with durable materials including tinned copper conductors, stainless steel nuts, and high-temperature fiber-reinforced plastics, the VSS switch is built to withstand harsh marine environments. It is ignition protected, supports On/Off switching, and can be surface or recessed mounted to suit installation preferences. The remote emergency parallel function can be activated via a dash-mounted momentary button, enabling batteries to be paralleled for up to 10 minutes. After this period, the switch will maintain the parallel connection if voltage conditions are sufficient or disengage if not, ensuring safe and efficient battery management. Designed with low power consumption (<6mA), this switch is suitable for continuous operation without significant drain on the battery. The compact dimensions make it easy to install in various marine settings while providing high current capacity of 275 amps, making it ideal for demanding marine electrical systems. The package includes the parallel switch and an instruction manual for straightforward installation and operation. Please note, this product is sold individually and complies with safety standards including ignition protection and chemical exposure warnings. For detailed operational guidance, consult the provided owner’s manual at the link below.

Features:

• Dual battery sensing for accurate voltage detection

• Manual override option for user control

• Low power consumption under 6mA for energy efficiency