The part carries a 4-pole 100% N-conductor protection design, meaning the neutral pole is fully rated — no derating needed for unbalanced loads or harmonic-rich circuits.
Panel integration and compliance
Dimensions are 130 mm height, 101.6 mm width, 70 mm depth — a standard SENTRON 3VM frame that fits existing Siemens switchboard and panelboard cutouts. No undervoltage release, no voltage trigger, no communication function — this is a basic thermal-magnetic breaker with no aux contacts or shunt trip built in. The overcurrent release design is TM220 — a fixed thermal bimetal and fixed magnetic trip. No trip indicator, no ground-fault monitoring. If you need adjustable long-time or short-time pickup, look at the 3VA series with electronic trip units. For simple overload and short-circuit protection on a feeder or main, the TM220 is reliable and field-proven.