● The SQM33 actuators are of robust design and have a gear train with only little backlash.

● Control and position feedback take place via a common cable.

● The actuators are driven by stepper motors and can be positioned with a resolution of 0.1°.

● The running times of the controlling elements are varied by the basic unit depending on the burner’s control phase

● Operating Voltage  AC/DC 24V ±20% (load on interface)

● Power consumption  SQM33.4xxA9  Max. 7.5 W

                                     SQM33.5xxA9 / SQM33.7xxA9  Max. 10 W

● Angular adjustment, usable range  Between 0° and max. 90°

● Reproducibility  ±0.2°

● Safety class  II to EN 60 730 part 1 and parts 2-14

● Degree of protection  SQM33.41xA9 / SQM33.51xA9  IP54 to EN 60 529-1

                                      SQM33.550A9 / SQM33.750A9  IP40 (at the cable outlet, with no conduit connected)

                                                                                           IP54 can be achieved with conduitconnected

● Environmental conditions  Operation  DIN EN 60721-3-3:1995

                                              Climatic conditions  Class 3K5

                                              Mechanical conditions  Class 3M4

                                              Temperature range  -20...+60 °C

                                              Humidity  <95% r.h.

● Weight  Approx. 1.4 kg

● Life cycle  250,000 start cycles (CLOSE ? OPEN ?CLOSE) under load with the rated torque in the entire rotation angle range.2,000,000 control cycles under load with 75% of rated torque in rotation angle range of 10°