Actually there are several different service entrance ratings available, SUSE is just the more commonly mentioned one.
Suitable for Use as Service Entrance (SUSE) equipment comes with a neutral to ground bonding jumper, for field installation/removal. Most panels and disconnect switches are built like this.
Suitable for use only as service equipment comes with a neutral to ground jumper that is factory installed and not removable. All-in-one (meter+distribution), panels are built like this.
Actually there are additional requirements that are apply to service equipment.
Just because you can, doesn't mean you should.