15 Amp Single-Pole Switch, White (10-Pack)

Yes. Unless there is a capacitor or a transformer interrupting the circuit in this switch it will work with DC. There is no capacitor, there is no reason for there to be a capacitor. There is no transformer, there is no reason for there to be a transformer. You don't need to 'trust' me, just measure the resistance (not impedance) of the two poles when it's flipped on. It will be close to zero cause that's what switches are.

I know old question, but seeing some of the answer couldn't help but give an answer. Voltage rating of a switch is max voltage that will not arc across open contacts. Might not arc until voltage is much higher then rated but go with the max rating of 120 volts for safety. Current rating is the amount of current the contacts can handle before over heating... melt, fuse together or cause a fire. For safety always go with about 2/3 max current rating as the max. A 15 amp switch I would go with 10 amps max or less. While not rated as a DC switch as long as remain in those specs it would work. Voltage drop across the contacts isn't about the voltage the switch is handling but about the current and resistance through the contacts when closed. It's calculated by current squared multiplied by resistance... this gives the voltage drop across the contacts... voltage multiplied by the current gives you the wattage dropped across the contacts. Even if using one volt DC as the supply voltage it's the current through the contacts and the resistance of the contacts that create the voltage drop across the contacts. Plus with AC the current (and voltage) would cycle through max to zero and back to max giving the contacts an amount of time to cool off where DC current wouldn't. I would recommend not exceeding 10 amps. But remember you will be using something in a way it wasn't designed for, doing so there could be risks involved. The choice about what you will be doing is completely up to you.

box of 10

Not and meet code. There are switches made for aluminum wiring.