The Siemens SENTRON 3VA2063-5HN36-0JA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 63 A and an interrupting capacity of 187 kA at 240 V AC. The interrupting curve drops to 121 kA at 415 V and 440 V, and to 79 kA at 500 V; at 690 V it still clears 3.4 kA, covering most industrial step-down transformer secondaries.
The ETU350 electronic trip unit on this MCCB provides adjustable long-time, short-time, and instantaneous protection curves — not a fixed thermal-magnetic. The shunt trip (STL) integrated auxiliary release lets a safety PLC or E-stop circuit open the breaker remotely, which is standard for emergency-off zones on conveyor or press lines.
Depth of 86 mm and height of 181 mm leave clearance for cable entry from below or busbar connection from the rear. Power loss is 5.4 W max — negligible for thermal budgeting inside a panel.