Siemens AG NNG3F120 Molded Case Circuit Breaker

Siemens NNG3F120 is a three-pole molded‑case circuit breaker from the VL Series, rated for 1200 A and a maximum 600 V, built for heavy industrial power distribution. This complete factory‑assembled NG‑frame breaker uses a thermal‑magnetic trip unit (LI) and is bolt‑on mountable for straightforward installation in panels, switchgear, and motor control centers. It provides an interrupting capacity of 35 kA at 480 V, aligning with Siemens’ high‑current protection for demanding applications, and is suited to environments up to 40°C ambient. A complete factory assembled NG breaker includes the frame, trip unit, and standard line and load lugs, with continuous current ratings up to 1200 A and bolt‑on mounting for rugged industrial installations.