What this MCCB does and what the ratings mean for your panel
The Siemens 3VA1050-4ED32-0JH0 is a SENTRON molded case circuit breaker (MCCB) configured for line protection — the standard role of protecting cables and busbars from overload and short-circuit. Its 50 A rated continuous current (Iu) holds steady from 40 °C through 50 °C, then derates to 48 A at 55 °C and 45 A at 70 °C, so in a warm enclosure the real ampacity is the derated figure, not the nameplate 50 A. The interrupting ratings tell you where it safely clears a fault: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V — these are the maximum fault currents it can break without welding contacts or rupturing the case. For a 480 V panel, the 52.5 kA at 440 V is the closest published figure; the actual 480 V rating is not listed here, so confirm against the full datasheet or apply the 440 V value conservatively. The TM210 thermal-magnetic release gives fixed thermal and magnetic trip thresholds, no field adjustment — what you order is what you get.
Mounting and integration in a standard panel
This MCCB measures 76.2 mm wide, 130 mm high, and 70 mm deep — a 3-pole footprint that fits standard DIN-rail or panel-mount cutouts in a SENTRON distribution board. The front face carries an IP40 rating, meaning tools and fingers stay out, but the enclosure itself is not sealed against washdown; keep it inside a cabinet. The auxiliary contact block is factory-fitted as 2 auxiliary switches plus 1 trip alarm switch (HQ version), so you get remote status of the breaker position and a separate alarm on trip without adding a separate module. The shunt trip (STL) is integrated — no undervoltage release on this variant, so if you need UVR for emergency-stop chains, this is not the right order code.