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
AMPS: Switch amps are like FUSE amps.. You put a 20 amp switch in a 30 amp circuit and it's a fuse. only it may not blow fast enough to avoid starting a fire.
Volts .. Well in a Resistive circuit volts need to be equal or greater than supply voltage. A 12 volt switch may arc over if hooked to say a 120 volt line.. and again. FIRE is possible.
MOTOR RATED.
A motor starting draws way more than it does running, I will use a 1HP 120 volt motor as my example.
Let's say that it draws 10 amps (Should be less but we will make it a non-eficient motor) running.
May draw 50 or more starting (For a very short time) Switch has to be "Slow blow" as it were. (So should the fuse)
And when you shut it off the inductive "kick" can easily break 1000 volts.
Volts .. Well in a Resistive circuit volts need to be equal or greater than supply voltage. A 12 volt switch may arc over if hooked to say a 120 volt line.. and again. FIRE is possible.
MOTOR RATED.
A motor starting draws way more than it does running, I will use a 1HP 120 volt motor as my example.
Let's say that it draws 10 amps (Should be less but we will make it a non-eficient motor) running.
May draw 50 or more starting (For a very short time) Switch has to be "Slow blow" as it were. (So should the fuse)
And when you shut it off the inductive "kick" can easily break 1000 volts.
