A DC power supply often see a capacitive 0 charge on switching. Thus the ESR of the load cap and supply can be much less than <<0.1 Ohm and the switch must handle this contact turn on current even if it is only for microseconds and this momentarily arcs possibly with contact bounce and erodes the silver alloy contacts each time.
So for DC switching contact ratings are usually reduced for this reason. The better solution is to use a 25A switch and preferably a FET or a soft start inrush current limiter , ICL which is a special NTC thermistor with a 15A switch or without using a 25A relay which is less desirable but also reliable when the 1 mohm initial contact resistance is less than the net ESR of the capacitors.
Thus if you want a short lifespan, use a 10A relay otherwise, don't.
Power high side or low side FET power switches would be most reliable rated for 25A or more and cost less than a 25A relay. It won't need a PCB if you use short twisted magnet wires to Gate and Source with correct polarity as required , Pch for high side and Nch for gnd switched side.
If you do not have a C load and are just driving 12V LEDs then that is considered a resistive load and a 15A relay will do or a 25A FET without a heatsink on a through hole part.
All switches have resistance and the heat dissipation must be low for Pd= Isquared*R. Generally, you choose a switch for <<1% pref. 0.1% load loss so 15Ax12V= 180W x0.1% = 0.18W
- that choice results in switch R= P/I^2 = 0.18W/225= 0.8 mohm . Relay contacts may start this low but erode, oxidize and rise sharply with aging then get hotter and burn out. FETs switches do not.