The 6AG1305-1AA00-2AA0: Output protection is a self-resetting PTC fuse — no thermal fuse or fuse holder to replace after a short-circuit event. That saves a service call for a blown fuse on a Saturday night line restart. Rated efficiency sits at 82 %, so at full load the unit dissipates 15 W. Plan for that heat load in the enclosure; it's manageable but not negligible.
One critical note: the unit cannot be paralleled for increased current. If you need more than 4 A, step up to a larger single supply — no stacking allowed. Power-up time is 0.5 s max; voltage rise time typical 15 ms. Lets the downstream IO modules stabilise before the CPU scans inputs. EMC: Class A emission per EN 55022, immunity per EN 61000-6-2. Suitable for industrial environments; not listed for residential or medical contexts.