The Siemens SIRIUS 3RT2038-3XF44-0LA2 is a size S2 power contactor rated for 65 A at 480 V and 62 A at 600 V, making it suitable for switching motor loads up to those currents in industrial control panels. The 110 VDC coil is terminated with spring-type terminals, and the main contacts are rated for AC-4 duty at 150 operations per hour maximum.
Mounting and Integration
Mounts via screw or snap-on onto a 35 mm standard mounting rail per DIN EN 60715. The mounting position allows +/-180° rotation on a vertical surface and +/-22.5° tilt forward or backward, giving flexibility in tight enclosures. Clearance requirements: 10 mm upward, 10 mm forward, 10 mm downward, and 6 mm at the side. Dimensions are 114 mm height, 55 mm width, and 178 mm depth.
Coil and Switching Characteristics
The DC coil draws 1.5 A inrush peak and operates with an arcing time of 10 to 20 ms and a DC switching time of 30 to 55 ms. The coil pickup threshold is 0.7 of rated voltage, with a full-scale dropout of 1.25. Auxiliary contacts are included. The contactor is rated for 10,000,000 typical mechanical operations.