Siemens PC5778 Plug-In Mounting Assembly For Frame Type J

PC5778 is a plug-in mounting assembly for JD-frame low-voltage molded‑case circuit breakers, enabling quick, secure installation in panel enclosures. The 3‑pole kit includes a mounting block and tulip‑style connectors, providing reliable line‑ and load‑end connections and precise alignment for JD‑frame devices. With an electrical rating of up to 600 V and 400 A, PC5778 is used with JD‑frame breakers (and related JD family variants) to convert a breaker into a plug‑in unit for panel mounting. In industrial switchgear and electrical distribution panels, this mounting assembly supports straightforward maintenance and compatible interface with Siemens Sentron JD‑frame MCCBs.