The New Generation Of 12-Volt DC Relays

dclark1946 wrote:

Salvo wrote:
They do have some not-so-great specs:

On resistance: as high as 25 mohm

Off leakage current: 2 mA

Given time, the leakage current can run down the battery.

The on resistance of a mechanical relay may be 10x better.

Can you still get latching relays that have all the low contact resistance advantages and only draw power when changing state?

Dick

Yes, one common RV application is for the salesman switch. ie A small switch by the door connects/disconnects some/most/all house battery loads. The latching solenoid itself which handles the heavy loads is usually located elsewhere.