The 5SN3310-3: Snaps onto standard 35mm DIN rail per EN 60715. The busbar comb slots into the bottom terminals for common feed; leave the top terminals for outgoing load wiring. Spring-cage or screw terminals depending on the variant — this one uses the standard screw clamp, accepting up to 25 mm² conductor.
Lifecycle status is current — ITE Siemens still produces this order code. No PCN or EOL notice. For a BOM-freeze or spares review, the part is a direct drop-in for any 5SN-series 10A slot.