I read somewhere that keeping a solenoid activated is bad for it (overheating or something). Is this the case, assuming that the power supplied to the solenoid is of the correct voltage, or is it OK to keep a solenoid powered for long periods of time?
EDIT: Just to add to this, it seems that one contributor to solenoid burnout is the inrush vs holding current. Some solenoids are apparently "continuous duty" vs "intermittent duty" (http://www.thefreelibrary.com/Solving+solenoid+burnout.-a011845237). The one I am interested in specifically is this: http://www.amazon.com/0837L-Open-Frame-Solenoid-Electric/dp/B00AOCAETQ/ref=sr_1_1?ie=UTF8&qid=1461097053&sr=8-1&keywords=lock+type+solenoid