SIEMENS
Siemens 3RA2816-0EW20 SIRIUS Star-Delta Function Module 24-240V AC/DC
Siemens 3RA2816-0EW20 SIRIUS Star-Delta Function Module 24-240V AC/DC
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Siemens 3RA2816-0EW20 SIRIUS Star-Delta Function Module
| Specification | Verified Product Data |
|---|---|
| Manufacturer | Siemens AG |
| Catalog Number | 3RA2816-0EW20 |
| Product Family | SIRIUS |
| Product Series | 3RA28 |
| Product Type | Star-Delta (Wye-Delta) Function Module |
| Kit Configuration | One Basic Module and Two Coupling Modules |
| Starting Function | Star-Delta (Wye-Delta) |
| Control Supply Voltage AC | 24-240V AC |
| Control Supply Voltage DC | 24-240V DC |
| AC Control Frequency | 50/60Hz |
| AC Voltage Operating Range Factor | 0.85-1.10 x Rated Value |
| DC Voltage Operating Range Factor | 0.85-1.10 x Rated Value |
| Adjustable Star Starting Time | 0.5-60s |
| Star-Delta Changeover Time | At Least 50ms |
| Integrated Surge Suppression | Varistor |
| Connection Arrangement | Coupling Modules with Ribbon Cables |
| Compatible Contactor Family | Siemens SIRIUS 3RT2 |
| Applicable Contactor Sizes | S00, S0, S2, S3 |
| Rated Insulation Voltage | 300V |
| Rated Impulse Withstand Voltage | 4kV |
| Pollution Degree | 3 |
| Product Net Weight | 0.221kg |
| Packaging Dimensions | 108 x 153 x 57mm |
| Packaging Quantity | 1 |
| EAN / GTIN | 4011209824485 |
| Country of Origin | Czech Republic |
| Manufacturer Lifecycle | PM300 - Active Product |
Product Overview
The Siemens 3RA2816-0EW20 is a SIRIUS 3RA28 star-delta (wye-delta) function module kit designed for controlling compatible Siemens SIRIUS 3RT2 contactor combinations in industrial motor starting systems. The function module provides the control logic and timing required for star-delta motor starting, reducing the need for separate control circuit wiring. It operates with a wide 24-240V AC/DC control supply and supports 50/60Hz AC control frequencies. The adjustable star starting time is 0.5 to 60 seconds, while a manufacturer-specified changeover dead time of at least 50ms helps prevent simultaneous star and delta contactor operation. The kit consists of one basic function module and two coupling modules with connecting cables. Integrated varistor suppression is provided for the contactor coils. Siemens specifies this module for compatible star-delta combinations using SIRIUS 3RT2 contactors in sizes S00, S0, S2 and S3, subject to the appropriate contactor configuration and installation requirements. The supplied actual product photographs show the Siemens SIRIUS module kit, the basic module label marked 3RA2816-0EW20, the matching packaging catalog number and the manufacturer's Made in Czech Republic marking. The photographed kit identification matches the requested catalog number. Before ordering, the required contactor configuration, star-delta timing, control supply and included connecting components should be confirmed.
Key Product Features
- SIRIUS 3RA28 Star-Delta Function Module — Designed for wye-delta motor starter control with Siemens SIRIUS contactor combinations.
- Wide 24-240V AC/DC Supply — Supports manufacturer-specified AC and DC control voltage operation.
- Adjustable 0.5-60s Timing — Allows the star starting time to be adjusted for the required motor starting sequence.
- Integrated Changeover Dead Time — Provides at least 50ms between star and delta operations.
- Complete Function Module Kit — One basic module and two coupling modules with connecting cables.
- Integrated Varistor Suppression — Provides suppression for contactor coil switching transients.
- 3RT2 Contactor Integration — Intended for specified Siemens SIRIUS S00, S0, S2 and S3 contactor combinations.
Actual Product Verification
In Stock & Available to Order
Siemens 3RA2816-0EW20 is marked in stock based on the supplied inventory information. This SIRIUS 3RA28 star-delta function module kit is offered for industrial motor starter maintenance, contactor control upgrades and exact-model spare-part procurement. Actual Siemens product and packaging photographs are available for reference, showing the basic module, coupling modules, connecting cables and matching catalog identification. Please confirm the required 24-240V AC/DC control supply, 0.5-60s star starting time, compatible 3RT2 contactor configuration, installation requirements and final kit completeness before ordering. The function module kit does not itself replace the power contactors or motor protection devices required for a complete motor starting system.
Siemens 3RA2816-0EW20
Contact us for exact-model verification, multiple units and Siemens SIRIUS motor starter component sourcing. Please confirm your 3RT2 contactor models, star-delta configuration, 24-240V AC/DC control voltage and timing requirements before ordering.
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