It carries a TM240 thermal-magnetic release — the thermal element handles overloads, the magnetic element clears short-circuits — and delivers a 220 kA interrupting capacity at 240 V, dropping to 154 kA at 415 V and 121 kA at 440 V. It mounts on a DIN rail or panel base, occupying 76.2 mm width, 130 mm height, and 70 mm depth — a standard 3-pole MCCB footprint that fits existing SENTRON panel layouts.
The 20 A rating is continuous at ambient temperatures up to 55 °C; at 60 °C and 65 °C it derates to 19 A, and at 70 °C it holds at 19 A. The TM240 release is adjustable — the thermal pickup and magnetic trip thresholds are set at the factory but can be field-adjusted within the release's range. Maximum power loss is 12 W — negligible for thermal budgeting in most enclosures.
Integration and compliance notes
For compliance, Siemens provides the usual documentation package: CE marking for the European market, UL/CSA listings for North America (standard for SENTRON 3VA), and RoHS/REACH declarations. Specific certification numbers are available on request.