3RA2816-0EW20
The 3RA2816-0EW20 is a star-delta (Y-Δ) functional module containing a basic module and two sets of coupling modules with integrated connecting cables. It controls voltages from 24 to 240V AC/DC, with switching times from 0.5 to 60 seconds. It is suitable for SIRIUS 3RT2 contactors and 3RH2 contactor relays, covering sizes from S00 to S3.
Product Positioning
The 3RA2816-0EW20 is a star-delta functional module from the Siemens SIRIUS 3RA28 series. It integrates a basic module, two sets of coupling modules, and connecting cables into one unit. It can automatically control the contactor to switch from star to delta configuration, simplifying the design and wiring of motor reduced-voltage starting circuits.
Core Product Advantages and Features
Integrated star-delta assembly
The basic module and two sets of coupled modules are supplied together, eliminating the hassle of purchasing and assembling multiple parts on-site.
Built-in connecting cable
The connecting cables between modules have been pre-integrated, which can shorten wiring time and reduce wiring errors.
Adjustable switching time
The switching time can be set from 0.5 to 60 seconds, depending on the starting characteristics of different motors.
Wide range of applicable sizes
It can be used with 3RT2 contactors and 3RH2 contactor relays of specifications S00 to S3, offering high flexibility in selection.
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