What this part is and what it does
The 3RT1034-1DW48-0PA6: The coil is rated 48 V DC, with an operating time of 20 to 30 ms and an arcing time of 10 to 15 ms — meaning it pulls in fast and extinguishes the arc quickly, which matters for DC control circuits where contact erosion is a concern.
Key ratings and what they mean for your application
For motor duty, the AC-3 rating at 500 V is 18.5 kW and at 690 V is 10 kW — these are the numbers you use for sizing a contactor to a standard three-phase induction motor. The AC-4 rating at 400 V is 29 A, which covers reversing or inching applications where the contactor makes and breaks the motor at full load current. For DC switching, the DC-13 ratings tell you the inductive load capability: 10 A at 24 V, 2 A at 60 V, 6 A at 230 V, and 3 A at 400 V. These are the values that govern contact life when switching DC solenoids or brake coils — the DC arc is harder to extinguish than AC, so the current is derated as voltage rises. The contactor is rated for pollution degree 3, which means it is suitable for industrial environments with conductive pollution or dry non-conductive pollution that becomes conductive due to condensation. Operating temperature range is -25 to +60 °C, storage goes from -55 to +80 °C. Mechanical endurance is rated at 10,000,000 operations typical — this is the life of the mechanism before wear, not the electrical contact life, which depends on load and switching frequency. Maximum switching frequency at AC-3 duty is 1,000 operations per hour.
Mounting and integration
Mounts via screw and snap-on onto a 35 mm standard mounting rail per DIN EN 50022. The S2 frame size gives a width of 95 mm, height of 112 mm, and depth of 130 mm — check your enclosure depth before committing; 130 mm is deeper than a typical S0 contactor. Side-by-side mounting is permitted without derating, so you can pack multiple contactors on the same DIN rail for multi-motor groups. The front face carries an IP20 protection rating; the terminals themselves are IP00, so keep fingers and tools away from the live connection points. Main circuit connections are screw-type terminals accepting 2x (0.75 to 16 mm²) solid or stranded. The control circuit accepts 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded, with a maximum of 2x (0.75 to 4 mm²). Minimum permissible conductor cross-section at 40 °C is 16 mm² for the main circuit.
Compliance and documentation
This part is RoHS compliant with a substance prohibition date of 05/01/2012, meaning it meets the EU RoHS directive for hazardous substances. As a Siemens SIRIUS product, it carries the usual CE marking for the European market and is designed to IEC/EN 60947-4-1 standards for contactors and motor-starters.