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Hello. Can somebody enlighten me on what is the recommended way to wire in these Schurter switches between my lipo batteries and TRS and Quark altimeters? I have one switch for the Quark and another switch for the TRS DPWR side. How for sure do the switches work? Should I wire four of the posts or only two? I was a little confused after reading this description on Apogee’s website about them. I will add the description below. Guess I’m not a wiring guru! Thanks for the help!
They have 4 terminals, and are essentially DPST with the quirk that one side of each switch is connected together in the 220V position. They can be wired as a simple SPST power switch optionally with both switch poles in parallel for even greater reliability. They can also be used to switch the common outputs of two altimeter boards as a SAFE/ARM switch for L3 projects or other airframes with redundant electronics as long as the two altimeters can handle having their starter commons tied together in the SAFE position. This allows for a "3 switch L3", and is usually ok if there are no other electrical connections between the two altimeters. Click Here to download a sample wiring diagram from a successful 3-switch L3 project if this seems complicated!
They have 4 terminals, and are essentially DPST with the quirk that one side of each switch is connected together in the 220V position. They can be wired as a simple SPST power switch optionally with both switch poles in parallel for even greater reliability. They can also be used to switch the common outputs of two altimeter boards as a SAFE/ARM switch for L3 projects or other airframes with redundant electronics as long as the two altimeters can handle having their starter commons tied together in the SAFE position. This allows for a "3 switch L3", and is usually ok if there are no other electrical connections between the two altimeters. Click Here to download a sample wiring diagram from a successful 3-switch L3 project if this seems complicated!