Drive specs and deployment context
The Siemens 6SL3211-0KB12-5BB0 is a SINAMICS G110 CPM110 AC drive rated 0.25 kW for both constant-torque (CT) and variable-torque (VT) loads, with a CT overload capability of 150% for 60 seconds. It operates from a single-phase 200-240 VAC supply (+10/-10%) at 47-63 Hz and includes a built-in Class B EMC filter, so no external filter is needed for residential or light industrial environments. The RS485 interface with USS protocol handles drive control and parameterization from a PLC or PC — no fieldbus gateway required for basic setups. The IP20 enclosure means it lives inside a panel, not on the machine frame; ambient temperature range is -10 to +50 °C without the optional BOP (Basic Operator Panel). Physical dimensions are 150 x 90 x 101 mm (HxWxD), and it ships without a heatsink — panel builders should account for that in thermal design.
What the ratings mean for fit
The 0.25 kW rating at both CT and VT tells you this drive is sized for a small motor — think a 0.33 HP induction motor on a conveyor, pump, or fan under 1 A full-load current. The 150% overload for 60 seconds gives you headroom for starting torque or short-duration load spikes without tripping. Single-phase input means it connects to a standard wall outlet or control transformer, not a three-phase supply — useful for retrofit or remote equipment where three-phase power isn't available. The built-in Class B filter meets EN 55011 for conducted emissions, so it won't radiate noise back onto the line in a residential or light-commercial panel. IP20 and no heatsink: plan for forced airflow or generous cabinet volume if the drive runs near full load continuously.