3RT1033-1BB40 (24VDC Coil)

Siemens Contactor 3RT1033-1BB40 Frame Size 2 28 amp 3-Pole 24VDC coil   Click Here to View information about this Product Click Here for Siemens Overload Relays Overview 3RT10 contactors, 3-pole, sizes S2 to S3 AC and DC operation IEC 60947, EN 60947 (VDE 0660) The 3RT1 contactors are climate-proof. They are finger-safe according to EN 50274. Size S00 & Size S0 contactors have an auxiliary contact integrated in the basic unit. The basic units of sizes S2 to S3 contain only the main current paths. All basic units can be extended with auxiliary switch blocks. Contact reliability If voltages ≤ 110 V and current ≤ 100 mA are to be switched, the auxiliary contacts of the 3RT1 contactor or 3RH11 contactor relay should be used as they guarantee a high level of contact reliability. These auxiliary contacts are suitable for solid-state circuits with currents ≥ 1 mA at a voltage of 17 V. Surge suppression 3RT1 contactors can be retrofitted with RC elements, varistors, diodes or diode assemblies (assembly of diode and Zener diode for short break times) for damping opening surges in the coil. The surge suppressors are plugged onto the front of size S00 contactors. Space is provided for them next to a snap-on auxiliary switch block. For size S0 to S3 contactors, varistors and RC elements can be snapped on either on the top or directly below the coil terminals. Diode assemblies are available in 2 different versions on account of their polarity. Depending on the application they can be connected either only at the bottom (assembly with motor starter protector) or only at the top (assembly with overload relay). The plug-in direction of the diodes and diode assemblies is specified by coding.