3RT1045-3XB40-0LA2

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Standards

IEC/EN 60947‑4‑1

The contactors are finger-safe according to IECВ 60529 (exception: series resistor S2 and S3). The auxiliary conductor and coil terminals of sizes S0 to S3 are all spring-type terminals.

Control and auxiliary circuits

Contactors are available with:

• Conventional coil (sizes S00 and S0 only)
• Coils with series resistor
• Coils with solid-state control unit

Ratings of three-phase motors

The quoted rating (in kW) refers to the output power on the motor shaft (according to the nameplate).

The power rating specifications of the contactors in kW are guide values for 4-pole standard motors at 50В Hz and specified voltage (e.g. 400В VВ AC). The actual starting and rated data of the motor to be switched must be considered when selecting the units.

Ambient temperature

The permissible ambient temperature for operation of the contactors (across the full coil operating range) is -40 В°C to +70В В°C.

Uninterrupted duty at temperatures > +60 В°C reduces the mechanical endurance, the current carrying capacity of the conducting paths and the switching frequency.