The B-curve (tripping characteristic class B) means the magnetic trip activates at 3 to 5 times rated current — so for a 16 A breaker, instantaneous trip occurs between 48 A and 80 A. The 5SY4216-6CC11 is also rated for DC circuits up to 72 V maximum, which covers control-voltage applications like 48 V DC or 60 V DC auxiliary supplies. The energy limiting class 3 indicates it limits let-through energy effectively, reducing stress on downstream equipment during a fault. Terminal capacity accepts solid or stranded conductors from 0.75 mm² up to 35 mm², with a tightening torque of 2.5 to 3.5 N·m — this covers most branch-circuit wiring sizes up to 6 AWG. Combined terminals top and bottom simplify busbar or pigtail connections.
Mounting position is any, which helps in tight enclosures. IP20 with connected conductors means finger-safe when wired; no additional sealing is needed for dry indoor panels.