The Siemens 3VA2450-5HK32-0AB0 is a 3-pole IEC frame 630 molded case circuit breaker with a breaking capacity class M rating of Icu=55kA at 415 V. It carries an ETU340 electronic trip unit configured for line protection with ELISA LI characteristic — overload protection adjustable from Ir=200 A to 500 A and short-circuit protection fixed at Ii=14 x In. The In=500 A rating sets the continuous current base; the wide Ir range lets you match the breaker to the actual load without changing the frame. Two integrated auxiliary changeover switches provide status feedback to the PLC or panel indicators.
The nut keeper kit simplifies torque-controlled terminal tightening during panel assembly — a detail that saves time on repetitive builds. The two auxiliary switches are factory-integrated, so no field-add kit is needed for status feedback.