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Product Details

Blue Sea M-Series battery switch selectors allow users to switch between battery banks without power interruption. They are ideal for marine and RV applications because they are ignition protected, and made from non-corrosive marine grade metals.

These switches can be surface, front panel, or rear panel mounted which provides a wide array of mounting locations.

Info & Guides

Technical Information

  • Product Details:

  • Isolating cover with snap-on sections protects rear contacts
  • Molded in durable reinforced polycarbonate
  • Labeled with international ON/OFF legends
  • Tactile textures indicate knob position by feel only
  • Removable key or knob remains positively retained
  • ICON label set included for circuit identification
  • 700 Amperes DC cranking rating

Reviews for Blue Sea Systems M-Series Battery Switch Selector

4 of 4 Reviews

June 6, 2019

Carry a spare as noted
By Rob from Bellingham, Washington

My new Nautique boat broke down on the lake. Upon opening up my dash, I found this switch had split in half so I had no battery connection. I managed to tape the contacts in long enough to get back to shore and immediately emailed Blue Sea systems. No response by the next day so I called them. 4 days later and still no response. The material they use is a very brittle bakelite plastic. They use machine screws to hold it together and the internal posts are not molded into the housing properly so they just snapped off probably because we hit a few big waves that shook the cabling. This is a boat so this product should have held up. I am still trying to contact the manufacturer but if not, I will install through bolts with a nut to hold the product together.

Poor design. Don't buy.
Bottom Line No, I would not recommend to a friend

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June 6, 2015

Unless this switch has been improved, carry a spare
By Bob from Fort Myers

Switch comes apart as screws holding pull out of base. Not long enough, fail about every 9 months. Might have had a production change to correct this as no replacement switches have failed. Boat is a 2013 model.

Bottom Line No, I would not recommend to a friend

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August 19, 2013

Great little battery switch
By Steve from North Carolina

Great looking switch in black after a flush mount installation. Simple product that works flawlessly.

Bottom Line Yes, I would recommend to a friend

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January 19, 2012

Battery Selector switch
By Tod from Los Angeles area

A very good product,works well,has good dettents to keep it in position.Easy to install. Saves you a lot of trouble especially if you have a small leak that drains your battery.

Bottom Line Yes, I would recommend to a friend

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