Siemens 3VA4120-5ED14-0AA0 U Molded Case Circuit Breaker

Siemens 3VA4120-5ED14-0AA0 U is a UL Frame 125 A, single-pole molded case circuit breaker (MCCB) rated for 20 A in 600 V systems. It uses a thermal-magnetic TM210 trip unit with a fixed overload setting In=20 A, a permanent short-circuit pickup Ir=20 A, and an instantaneous trip at Ii=15×In (300 A), providing protection for feeders and branch circuits. This 1-pole device belongs to the 125 A frame family and features standard line/load terminals suitable for 600 V distribution panels. Model 3VA4120-5ED14-0AA0 U sits within Siemens’ 3VA molded‑case breaker lineup, combining reliable thermal-magnetic protection in a compact form factor.