First, the title should read "House Switch".

Let me state that I've read the cautions about using an AC rated switch in a DC circuit. It shouldn't be done because of the arcing danger.

But I'm going to ask anyway. In a 6V circuit, with 6 flashlight incandescent bulbs, can it be done? The bulbs are rated 1.6W.

If not, is anyone aware of a DC mechanical timer switch (as in a bathroom fan switch)?

 

At approx. 1 amp and only 6 volts, you shouldn't have a problem other than a shorter than normal life cycle for the contacts. Only use would reveal the short comings.

 

Using AC rated switches in lower voltage DC circuits is usually not a problem.

Most switches that are rated for 250 VAC @ X amps are also rated at 30 VDC X amps for the same service life.

 

I doubt there are such switches.

It is a problem for DC motors, but a few low wattage bulbs should be fine.

 

Using AC rated switches in lower voltage DC circuits is usually not a problem.

Most switches that are rated for 250 VAC @ X amps are also rated at 30 VDC X amps for the same service life.

I know of some E Switch switches (100SP1T1B1M1QEH for one) that are rated 120VAC or 28VDC with a resistive 5A load. They are also rated for 250VAC (but no DC rating) with a 2A resistive load.

Honeywell makes some switches with the 250VAC/30VDC rating but they are >>$100USD.

(For 6V and a lamp (resistive) load djsfantasi should be fine with an AC switch.)