I don't have personal experience with suicidal hotlines but I don't think they would have you hospitalized if you are not actively suicidal. If you are just feeling suicidal but are still controlling your impulses and don't feel like actually doing it, it is my understanding that they would just talk to you as long as it takes for you to feel more stable. I think, they make an assessment over the phone about how much you are a danger to yourself at the moment.

You can also try "warm lines". They are not for emergencies but just for talking about anything.