Siemens SQM40.241A21 actuator

Industrial servo drive Siemens SQM40.241A21 with analog control Modulating actuator for precise control of fuel and air supply in high power burners Siemens SQM40.241A21 is a high-tech electromechanical actuator (servomotor) with analog control, designed for precise positioning of air dampers, gas butterfly valves and control valves in industrial burner devices. The model is specially designed for systems requiring smooth proportional regulation depending on load. Thanks to support for analog control signals (4-20 mA, 0-135 Ohm, 2-10 V DC), this actuator is ideal for use with PID controllers and modern burner automation systems. Key advantages Analog modulating control - supports three types of input signals: 4-20 mA, 0-135 Ohm and 2-10 V DC. Allows connecting the actuator directly to PID controllers (e.g., RWF40…) for smooth maintenance of a set temperature or pressure. High torque - nominal torque of 10 N·m ensures reliable movement of heavy dampers and valves on medium and high power burners. Optimal opening time - full 90° rotation is achieved in 30 seconds. This provides smooth and precise regulation without jerks, which is especially important for modulating burners. Maximum protection against external influences - protection class IP66 (according to NEMA 4) guarantees actuator operation in the harshest conditions: outdoors, in dusty and humid rooms, under direct water jets. No additional protective covers required. Reversible synchronous motor with blocking protection - prevents actuator failure when the damper mechanism jams. Universal