The "make 60, break 6, 10A continuous" rating that you see is for AC circuits. For that reason, the maximum inductive load, often expressed as a HP or kW load, will be lower than the continuous rating because it is based on the 6A portion. The reason is, the inductive load will sustain the arc when the contacts open, increasing the heat significantly. If the load is resistive, the contacts can handle the breaking better because the voltage will pass through zero twice per cycle, which helps extinguish the arc faster that with the inductive load.
Why this relates to you is that if you have a relay designed specifically for DC loads, that rating is based on the same concept of arc continuance, because with DC there is no issue of the voltage passing through zero to help. So in effect, your DC continuous amp rating IS the break rating. Your relay is rated for 2A. The Make rating can only be used if something ELSE in the circuit will be interrupting the current flow under load. For example if you have this relay feeding some sort of power converter such as a chopper drive for a 2A load, applying power may involve capacitor charging current in the instant you turn it on, so the 10A Make rating would apply, but if you ever shut down, the chopper drive actually turns the load off first, THEN the contacts open with vitually no load, so the 2A Break rating is fine. In the absence of some other controlling device, you can only use that relay at 2A.
"You measure the size of the accomplishment by the obstacles you had to overcome to reach your goals" -- Booker T. Washington
