The Schneider Electric EZ9F34416 is a 4-pole miniature circuit breaker from the Easy9 range, rated 16 A with a C-curve trip characteristic (magnetic trip between 5 and 10 times In). Rated breaking capacity is 4.5 kA Icn at both 230 V and 400 V AC, 50/60 Hz, per IEC 60898-1.
Clip-on mount to standard DIN rail, 72 mm wide (4 module pitches at 18 mm each). Depth is 66.5 mm, height 81 mm — fits standard distribution board enclosures without crowding the cover. Tunnel terminals accept 1–25 mm² rigid or 1–16 mm² flexible, torqued to 2 N·m.
C-curve (5–10× In) suits inductive loads like small motors, fluorescent lighting banks, and transformers where inrush current is moderate. Pollution degree 2, suitable for normal industrial or commercial environments. Service breaking capacity Ics equals Icn at 4.5 kA (100 % rating), so after clearing a fault at its full rating the breaker remains functional — no need to replace it after a single high-fault event. Electrical durability is 4,000 cycles, mechanical 10,000 cycles. IP20 finger protection on the front face.