SPDT switch > 20A @ 32VDC?
I'm seeing SPDT toggles that are 20A at 125VAC Ebay 20A 125VACand some that are simultaneously rated to 21A at 14VDC DelCity 20A 125VAC But I want to switch a max of ~700W at ~30A, so maybe 23A? ...
Forum Discussion
theoldwizard1 wrote:
Amps is amps. The voltage does not matter much unless you are taking about over 250V. A relay would be safer.
While amps are amps in DC vs AC the thing that one must be careful of is suppressing or quenching the arc during switching of DC voltages/current.
Not all AC switches do a very good job of handling arc suppression under high current DC loads.
Some but not all AC switches have a DC voltage/current rating which is typically lower than the AC ratings.
I would agree that a DC rated relay is most likely the better choice, however, one must account for the current drawn through the relay in their battery usage which will eat some of their capacity.
There are purpose made latching solenoids which only use coil current during the switching period that might work well with this configuration..
